NRV Series Check Valve

Specifications: NRV06 is an NRV non-return valve. 06 selects a 1/8-inch connection; the omitted thread suffix selects PT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 06 1/8 in port Omitted thread code PT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port PT1/8 Effective area 18 mm² Cv 1 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 50 mm AB Not specified for this drawing branch Square B 25.5 mm ØBA 29.5 mm Square BC Not specified for this drawing branch P PT1/8 The installation dimensions follow the 2022 Chinese catalog (printed page 159): square B = 25.5 mm and ØBA = 29.5 mm. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV06 / NRV08. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow scale runs from 0 to 1500 L/min. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 69 g. Source: 2022 catalog printed page 300, NRV-6 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female PT1/8 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): BB male–male; BKC compression fitting; BPC metal straight; BPOC metal straight; PC straight; PEB branch tee; PED run tee; PH banjo elbow; PHF female branch banjo; PHW twin banjo; PKD reducing distribution fitting; PL elbow; PLL extended elbow; POC round straight; PYB Y; PZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male PT1/8 ↔ male PT1/8: BB0101,BB0101-Smale PT1/4 ↔ male PT1/8: BB0102,BB0102-Smale PT3/8 ↔ male PT1/8: BB0103,BB0103-S4 × 2.5: BKC0425-01,BKC0425-01-S,UE95A040025100MBU,US98A040025100MBU6 × 4: BKC0604-01,BKC0604-01-S,UE95A060040100MBU,US98A060040100MBU8 × 5: BKC0805-01,BKC0805-01-S,UE95A080050100MBU,US98A080050100MBU8 × 5.5 or 6: BKC0806-01,BKC0806-01-S10: BPC1001,PC1001,PC1001-S,PC1001D,PC1001D-S,PEB1001,PEB1001-S,PEB1001D,PEB1001D-S,PED1001,PED1001-S,PED1001D,PED1001D-S,PL1001,PL1001-S,PL1001D,PL1001D-S,PLL1001,PLL1001-S,PLL1001D,PLL1001D-S,POC1001,POC1001-S,POC1001D,POC1001D-S,PYB1001,PYB1001-S,PYB1001D,PYB1001D-S4: BPC401,BPOC401,PC401,PC401-M,PC401-S,PC401D,PC401D-M,PC401D-S,PEB401,PEB401-S,PEB401D,PEB401D-S,PED401,PED401-S,PED401D,PED401D-S,PH401,PH401-S,PH401D,PH401D-S,PHW401,PHW401-S,PHW401D,PHW401D-S,PL401,PL401-M,PL401-S,PL401D,PL401D-M,PL401D-S,PLL401,PLL401-S,PLL401D,PLL401D-S,POC401,POC401-S,POC401D,POC401D-S,PYB401,PYB401-S,PYB401D,PYB401D-S6: BPC601,BPOC601,PC601,PC601-M,PC601-S,PC601D,PC601D-M,PC601D-S,PEB601,PEB601-S,PEB601D,PEB601D-S,PED601,PED601-S,PED601D,PED601D-S,PH601,PH601-S,PH601D,PH601D-S,PHW601,PHW601-S,PHW601D,PHW601D-S,PL601,PL601-M,PL601-S,PL601D,PL601D-M,PL601D-S,PLL601,PLL601-S,PLL601D,PLL601D-S,POC601,POC601-S,POC601D,POC601D-S,PYB601,PYB601-S,PYB601D,PYB601D-S,PZB601,PZB601-S,PZB601D,PZB601D-S8: BPC801,BPOC801,PC801,PC801-S,PC801D,PC801D-S,PEB801,PEB801-S,PEB801D,PEB801D-S,PED801,PED801-S,PED801D,PED801D-S,PH801,PH801-S,PH801D,PH801D-S,PHW801,PHW801-S,PHW801D,PHW801D-S,PL801,PL801-S,PL801D,PL801D-S,PLL801,PLL801-S,PLL801D,PLL801D-S,POC801,POC801-S,POC801D,POC801D-S,PYB801,PYB801-S,PYB801D,PYB801D-S,PZB801,PZB801-S,PZB801D,PZB801D-S12: PC1201,PC1201-S,PC1201D,PC1201D-S,PL1201,PL1201-S,PL1201D,PL1201D-S4; male RA PT1/8 / female RB PT1/8: PHF401,PHF401-S,PHF401D,PHF401D-S6; male RA PT1/8 / female RB PT1/8: PHF601,PHF601-S,PHF601D,PHF601D-S8; male RA PT1/8 / female RB PT1/8: PHF801,PHF801-S,PHF801D,PHF801D-Smain 6 / branch 4: PKD6-401,PKD6-401-S,PKD6-401D,PKD6-401D-S10 × 6.5: UE95A100065100MBU,US98A100065100MBU12 × 8: UE95A120080100MBU,US98A120080100MBU These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. PHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal BPC/BPOC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV08 is an NRV non-return valve. 08 selects a 1/4-inch connection; the omitted thread suffix selects PT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 08 1/4 in port Omitted thread code PT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port PT1/4 Effective area 27 mm² Cv 1.5 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 50 mm AB Not specified for this drawing branch Square B 25.5 mm ØBA 29.5 mm Square BC Not specified for this drawing branch P PT1/4 The installation dimensions follow the 2022 Chinese catalog (printed page 159): square B = 25.5 mm and ØBA = 29.5 mm. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV06 / NRV08. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow scale runs from 0 to 1500 L/min. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 66 g. Source: 2022 catalog printed page 300, NRV-8 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female PT1/4 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): BB male–male; BD male–female; BKC compression fitting; BPC metal straight; BPOC metal straight; PC straight; PEB branch tee; PED run tee; PH banjo elbow; PHF female branch banjo; PHW twin banjo; PKD reducing distribution fitting; PL elbow; PLL extended elbow; POC round straight; PYB Y; PZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male PT1/4 ↔ male PT1/8: BB0102,BB0102-Smale PT1/4 ↔ male PT1/4: BB0202,BB0202-Smale PT3/8 ↔ male PT1/4: BB0203,BB0203-Smale PT1/2 ↔ male PT1/4: BB0204,BB0204-Smale PT1/4 ↔ female PT1/8: BD0102,BD0102-S6 × 4: BKC0604-02,BKC0604-02-S,UE95A060040100MBU,US98A060040100MBU8 × 5: BKC0805-02,BKC0805-02-S,UE95A080050100MBU,US98A080050100MBU8 × 5.5 or 6: BKC0806-02,BKC0806-02-S10 × 6.5: BKC1065-02,BKC1065-02-S,UE95A100065100MBU,US98A100065100MBU10 × 7.5 or 8: BKC1075-02,BKC1075-02-S12 × 8: BKC1208-02,BKC1208-02-S,UE95A120080100MBU,US98A120080100MBU12 × 9 or 10: BKC1209-02,BKC1209-02-S10: BPC1002,BPOC1002,PC1002,PC1002-S,PC1002D,PC1002D-S,PEB1002,PEB1002-S,PEB1002D,PEB1002D-S,PED1002,PED1002-S,PED1002D,PED1002D-S,PH1002,PH1002-S,PH1002D,PH1002D-S,PHW1002,PHW1002-S,PHW1002D,PHW1002D-S,PL1002,PL1002-S,PL1002D,PL1002D-S,PLL1002,PLL1002-S,PLL1002D,PLL1002D-S,POC1002,POC1002-S,POC1002D,POC1002D-S,PYB1002,PYB1002-S,PYB1002D,PYB1002D-S,PZB1002,PZB1002-S,PZB1002D,PZB1002D-S12: BPC1202,PC1202,PC1202-S,PC1202D,PC1202D-S,PEB1202,PEB1202-S,PEB1202D,PEB1202D-S,PED1202,PED1202-S,PED1202D,PED1202D-S,PL1202,PL1202-S,PL1202D,PL1202D-S,PLL1202,PLL1202-S,PLL1202D,PLL1202D-S,POC1202,POC1202-S,POC1202D,POC1202D-S,PYB1202,PYB1202-S,PYB1202D,PYB1202D-S4: BPC402,PC402,PC402-S,PC402D,PC402D-S,PEB402,PEB402-S,PEB402D,PEB402D-S,PED402,PED402-S,PED402D,PED402D-S,PL402,PL402-S,PL402D,PL402D-S,PLL402,PLL402-S,PLL402D,PLL402D-S,POC402,POC402-S,POC402D,POC402D-S,PYB402,PYB402-S,PYB402D,PYB402D-S6: BPC602,BPOC602,PC602,PC602-S,PC602D,PC602D-S,PEB602,PEB602-S,PEB602D,PEB602D-S,PED602,PED602-S,PED602D,PED602D-S,PH602,PH602-S,PH602D,PH602D-S,PHW602,PHW602-S,PHW602D,PHW602D-S,PL602,PL602-S,PL602D,PL602D-S,PLL602,PLL602-S,PLL602D,PLL602D-S,POC602,POC602-S,POC602D,POC602D-S,PYB602,PYB602-S,PYB602D,PYB602D-S,PZB602,PZB602-S,PZB602D,PZB602D-S8: BPC802,BPOC802,PC802,PC802-S,PC802D,PC802D-S,PEB802,PEB802-S,PEB802D,PEB802D-S,PED802,PED802-S,PED802D,PED802D-S,PH802,PH802-S,PH802D,PH802D-S,PHW802,PHW802-S,PHW802D,PHW802D-S,PL802,PL802-S,PL802D,PL802D-S,PLL802,PLL802-S,PLL802D,PLL802D-S,POC802,POC802-S,POC802D,POC802D-S,PYB802,PYB802-S,PYB802D,PYB802D-S,PZB802,PZB802-S,PZB802D,PZB802D-S10; male RA PT1/4 / female RB PT1/4: PHF1002,PHF1002-S,PHF1002D,PHF1002D-S6; male RA PT1/4 / female RB PT1/4: PHF602,PHF602-S,PHF602D,PHF602D-S8; male RA PT1/4 / female RB PT1/4: PHF802,PHF802-S,PHF802D,PHF802D-Smain 8 / branch 6: PKD8-602,PKD8-602-S,PKD8-602D,PKD8-602D-S4 × 2.5: UE95A040025100MBU,US98A040025100MBU These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. PHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal BPC/BPOC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV08T is an NRV non-return valve. 08 selects a 1/4-inch connection; T selects NPT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 08 1/4 in port T NPT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port NPT1/4 Effective area 27 mm² Cv 1.5 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 50 mm AB Not specified for this drawing branch Square B 25.5 mm ØBA 29.5 mm Square BC Not specified for this drawing branch P NPT1/4 The installation dimensions follow the 2022 Chinese catalog (printed page 159): square B = 25.5 mm and ØBA = 29.5 mm. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV06 / NRV08. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow scale runs from 0 to 1500 L/min. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 66 g. Source: 2022 catalog printed page 300, NRV-8 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female NPT1/4 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): NBB male–male; NBD male–female; NBKC compression fitting; NBPC metal straight; NPC straight; NPEB branch tee; NPED run tee; NPH banjo elbow; NPHF female branch banjo; NPHW twin banjo; NPKD reducing distribution fitting; NPL elbow; NPLL extended elbow; NPYB Y; NPZB cross. Use Size / complete codes IN,OUT (discontinued) male NPT1/2 ↔ male NPT1/4: NBB1/4-1/2male NPT1/4 ↔ male NPT1/4: NBB1/4-1/4male NPT3/8 ↔ male NPT1/4: NBB1/4-3/8male NPT1/8 ↔ male NPT1/4: NBB1/8-1/4male NPT1/4 ↔ female NPT1/8: NBD1/8-1/41/2 × 1/3 in: NBKC1/2-1/3-1/41/4 × 5/32 in: NBKC1/4-5/32-1/43/8 × 1/4 in: NBKC3/8-1/4-1/45/16 × 1/5 in: NBKC5/16-1/5-1/41/2 in: NBPC1/2-1/4,NPLL1/2-1/41/4 in: NBPC1/4-1/4,NPH1/4-1/4,NPHW1/4-1/4,NPLL1/4-1/4,NPZB1/4-1/43/8 in: NBPC3/8-1/4,NPH3/8-1/4,NPHW3/8-1/4,NPLL3/8-1/4,NPZB3/8-1/45/16 in: NBPC5/16-1/4,NPH5/16-1/4,NPHW5/16-1/4,NPLL5/16-1/4,NPZB5/16-1/41/4 in; male RA NPT1/4 / female RB NPT1/4: NPHF1/4-1/43/8 in; male RA NPT1/4 / female RB NPT1/4: NPHF3/8-1/45/16 in; male RA NPT1/4 / female RB NPT1/4: NPHF5/16-1/4main 5/16 / branch 1/4 in: NPKD5/16-1/4-1/4 IN,OUT 1/2 in: NPC1/2-1/4,NPEB1/2-1/4,NPED1/2-1/4,NPL1/2-1/4,NPYB1/2-1/41/4 in: NPC1/4-1/4,NPEB1/4-1/4,NPED1/4-1/4,NPL1/4-1/4,NPYB1/4-1/43/8 in: NPC3/8-1/4,NPEB3/8-1/4,NPED3/8-1/4,NPL3/8-1/4,NPYB3/8-1/45/16 in: NPC5/16-1/4,NPEB5/16-1/4,NPED5/16-1/4,NPL5/16-1/4,NPYB5/16-1/4 These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. NPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. NBPC/compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV06G is an NRV non-return valve. 06 selects a 1/8-inch connection; G selects G threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 06 1/8 in port G G Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port G1/8 Effective area 18 mm² Cv 1 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 50 mm AB Not specified for this drawing branch Square B 25.5 mm ØBA 29.5 mm Square BC Not specified for this drawing branch P G1/8 The installation dimensions follow the 2022 Chinese catalog (printed page 159): square B = 25.5 mm and ØBA = 29.5 mm. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV06 / NRV08. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow scale runs from 0 to 1500 L/min. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 69 g. Source: 2022 catalog printed page 300, NRV-6 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female G1/8 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): GBB male–male; GBKC compression fitting; GBPC metal straight; GPC straight; GPEB branch tee; GPED run tee; GPH banjo elbow; GPHF female branch banjo; GPHW twin banjo; GPKD reducing distribution fitting; GPL elbow; GPLL extended elbow; GPYB Y; GPZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male G1/8 ↔ male G1/8: GBB0101male G1/4 ↔ male G1/8: GBB0102male G3/8 ↔ male G1/8: GBB01034 × 2.5: GBKC0425-01,UE95A040025100MBU,US98A040025100MBU6 × 4: GBKC0604-01,UE95A060040100MBU,US98A060040100MBU8 × 5: GBKC0805-01,UE95A080050100MBU,US98A080050100MBU8 × 5.5 or 6: GBKC0806-0110: GBPC1001,GPC1001,GPC1001D,GPEB1001,GPEB1001D,GPED1001,GPED1001D,GPL1001,GPL1001D,GPLL1001,GPLL1001D,GPYB1001,GPYB1001D4: GBPC401,GPC401-M,GPC401D-M,GPEB401,GPEB401D,GPED401,GPED401D,GPH401,GPH401D,GPHW401,GPHW401D,GPL401-M,GPL401D-M,GPLL401,GPLL401D,GPYB401,GPYB401D6: GBPC601,GPC601,GPC601-M,GPC601D,GPC601D-M,GPEB601,GPEB601D,GPED601,GPED601D,GPH601,GPH601D,GPHW601,GPHW601D,GPL601,GPL601-M,GPL601D,GPL601D-M,GPLL601,GPLL601D,GPYB601,GPYB601D,GPZB601,GPZB601D8: GBPC801,GPC801,GPC801D,GPEB801,GPEB801D,GPED801,GPED801D,GPH801,GPH801D,GPHW801,GPHW801D,GPL801,GPL801D,GPLL801,GPLL801D,GPYB801,GPYB801D,GPZB801,GPZB801D12: GPC1201,GPC1201D,GPL1201,GPL1201D4; male RA G1/8 / female RB G1/8: GPHF401,GPHF401D6; male RA G1/8 / female RB G1/8: GPHF601,GPHF601D8; male RA G1/8 / female RB G1/8: GPHF801,GPHF801Dmain 6 / branch 4: GPKD6-401,GPKD6-401D10 × 6.5: UE95A100065100MBU,US98A100065100MBU12 × 8: UE95A120080100MBU,US98A120080100MBU These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. GPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal GBPC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV06T is an NRV non-return valve. 06 selects a 1/8-inch connection; T selects NPT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 06 1/8 in port T NPT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port NPT1/8 Effective area 18 mm² Cv 1 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 50 mm AB Not specified for this drawing branch Square B 25.5 mm ØBA 29.5 mm Square BC Not specified for this drawing branch P NPT1/8 The installation dimensions follow the 2022 Chinese catalog (printed page 159): square B = 25.5 mm and ØBA = 29.5 mm. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV06 / NRV08. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow scale runs from 0 to 1500 L/min. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 69 g. Source: 2022 catalog printed page 300, NRV-6 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female NPT1/8 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): NBB male–male; NBKC compression fitting; NBPC metal straight; NPC straight; NPEB branch tee; NPED run tee; NPH banjo elbow; NPHF female branch banjo; NPHW twin banjo; NPKD reducing distribution fitting; NPL elbow; NPLL extended elbow; NPYB Y; NPZB cross; NUE PU tube. Use Size / complete codes IN,OUT (discontinued) male NPT1/8 ↔ male NPT1/4: NBB1/8-1/4male NPT1/8 ↔ male NPT1/8: NBB1/8-1/8male NPT1/8 ↔ male NPT3/8: NBB1/8-3/81/4 × 5/32 in: NBKC1/4-5/32-1/85/16 × 1/5 in: NBKC5/16-1/5-1/85/32 × 3/32 in: NBKC5/32-3/32-1/81/4 in: NBPC1/4-1/8,NPH1/4-1/8,NPHW1/4-1/8,NPLL1/4-1/8,NPZB1/4-1/83/8 in: NBPC3/8-1/8,NPLL3/8-1/85/16 in: NBPC5/16-1/8,NPH5/16-1/8,NPHW5/16-1/8,NPLL5/16-1/8,NPZB5/16-1/85/32 in: NBPC5/32-1/8,NPH5/32-1/8,NPHW5/32-1/8,NPLL5/32-1/81/4 in; male RA NPT1/8 / female RB NPT1/8: NPHF1/4-1/85/16 in; male RA NPT1/8 / female RB NPT1/8: NPHF5/16-1/85/32 in; male RA NPT1/8 / female RB NPT1/8: NPHF5/32-1/8main 1/4 / branches 5/32 in: NPKD1/4-5/32-1/8 IN,OUT 1/4 in: NPC1/4-1/8,NPEB1/4-1/8,NPED1/4-1/8,NPL1/4-1/8,NPYB1/4-1/83/8 in: NPC3/8-1/8,NPEB3/8-1/8,NPED3/8-1/8,NPL3/8-1/8,NPYB3/8-1/85/16 in: NPC5/16-1/8,NPEB5/16-1/8,NPED5/16-1/8,NPL5/16-1/8,NPYB5/16-1/85/32 in: NPC5/32-1/8,NPEB5/32-1/8,NPED5/32-1/8,NPL5/32-1/8,NPYB5/32-1/85/32 × 3/32 in: NUE95A5/32X3/32-100BK,NUE95A5/32X3/32-100BR,NUE95A5/32X3/32-100BU,NUE95A5/32X3/32-100C,NUE95A5/32X3/32-100CB,NUE95A5/32X3/32-100CE,NUE95A5/32X3/32-100CG,NUE95A5/32X3/32-100CR,NUE95A5/32X3/32-100CY,NUE95A5/32X3/32-100GA,NUE95A5/32X3/32-100GE,NUE95A5/32X3/32-100GN,NUE95A5/32X3/32-100R,NUE95A5/32X3/32-100WH,NUE95A5/32X3/32-100Y,NUE95A5/32X3/32-250BK,NUE95A5/32X3/32-250BR,NUE95A5/32X3/32-250BU,NUE95A5/32X3/32-250C,NUE95A5/32X3/32-250CB,NUE95A5/32X3/32-250CE,NUE95A5/32X3/32-250CG,NUE95A5/32X3/32-250CR,NUE95A5/32X3/32-250CY,NUE95A5/32X3/32-250GA,NUE95A5/32X3/32-250GE,NUE95A5/32X3/32-250GN,NUE95A5/32X3/32-250R,NUE95A5/32X3/32-250WH,NUE95A5/32X3/32-250Y,NUE95A5/32X3/32-500BK,NUE95A5/32X3/32-500BR,NUE95A5/32X3/32-500BU,NUE95A5/32X3/32-500C,NUE95A5/32X3/32-500CB,NUE95A5/32X3/32-500CE,NUE95A5/32X3/32-500CG,NUE95A5/32X3/32-500CR,NUE95A5/32X3/32-500CY,NUE95A5/32X3/32-500GA,NUE95A5/32X3/32-500GE,NUE95A5/32X3/32-500GN,NUE95A5/32X3/32-500R,NUE95A5/32X3/32-500WH,NUE95A5/32X3/32-500Y These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. NPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. NBPC/compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. NBKC5/32-3/32-1/8 specifies 3/32 in ID in its dimension row, but the selection matrix differs. Confirm that ID with the supplier before selecting the tube. The listed NUE95A tubes serve IN and OUT only through a listed exact 5/32 in OD connection; they do not connect directly to an NPT thread. For NBKC5/32-3/32-1/8, the supplier must also confirm 3/32 in ID. Do not substitute 4 mm, 3.2 mm, 3 mm or 1/8 in OD tube. NUE95A5/32X3/32 is ether-based PU, Shore A95±2, with 5/32 in OD × 3/32 in ID and 1/32 in wall. Working pressure is 145 psi at 73°F; 363 psi is burst pressure, not a working rating. Temperature range: −40–158°F; minimum bend radius: 8 mm. Derate with increasing temperature and obey every stricter NRV, fitting and tube limit. In NUE codes, 100/250/500 after the hyphen are coil lengths in feet, not metres. Colours: BU blue, BK black, GE orange, C clear, WH white, CB clear blue, R red, Y yellow, GA gray, GN green, BR brown, CR clear red, CG clear green, CY clear yellow, CE clear orange. Match the complete length-and-colour code. Current lifecycle and supply of these catalog-listed tubes are unverified; confirm the exact item or an approved replacement before ordering. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV08G is an NRV non-return valve. 08 selects a 1/4-inch connection; G selects G threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 08 1/4 in port G G Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port G1/4 Effective area 27 mm² Cv 1.5 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 50 mm AB Not specified for this drawing branch Square B 25.5 mm ØBA 29.5 mm Square BC Not specified for this drawing branch P G1/4 The installation dimensions follow the 2022 Chinese catalog (printed page 159): square B = 25.5 mm and ØBA = 29.5 mm. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV06 / NRV08. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow scale runs from 0 to 1500 L/min. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 66 g. Source: 2022 catalog printed page 300, NRV-8 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female G1/4 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): GBB male–male; GBD male–female; GBKC compression fitting; GBPC metal straight; GPC straight; GPEB branch tee; GPED run tee; GPH banjo elbow; GPHF female branch banjo; GPHW twin banjo; GPKD reducing distribution fitting; GPL elbow; GPLL extended elbow; GPYB Y; GPZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male G1/4 ↔ male G1/8: GBB0102male G1/4 ↔ male G1/4: GBB0202male G3/8 ↔ male G1/4: GBB0203male G1/2 ↔ male G1/4: GBB0204male G1/4 ↔ female G1/8: GBD01026 × 4: GBKC0604-02,UE95A060040100MBU,US98A060040100MBU8 × 5: GBKC0805-02,UE95A080050100MBU,US98A080050100MBU8 × 5.5 or 6: GBKC0806-0210 × 6.5: GBKC1065-02,UE95A100065100MBU,US98A100065100MBU10 × 7.5 or 8: GBKC1075-0212 × 8: GBKC1208-02,UE95A120080100MBU,US98A120080100MBU12 × 9 or 10: GBKC1209-0210: GBPC1002,GPC1002,GPC1002D,GPEB1002,GPEB1002D,GPED1002,GPED1002D,GPH1002,GPH1002D,GPHW1002,GPHW1002D,GPL1002,GPL1002D,GPLL1002,GPLL1002D,GPYB1002,GPYB1002D,GPZB1002,GPZB1002D12: GBPC1202,GPC1202,GPC1202D,GPEB1202,GPEB1202D,GPED1202,GPED1202D,GPL1202,GPL1202D,GPLL1202,GPLL1202D,GPYB1202,GPYB1202D4: GBPC402,GPC402-M,GPC402D-M,GPEB402,GPEB402D,GPED402,GPED402D,GPL402-M,GPL402D-M,GPLL402,GPLL402D,GPYB402,GPYB402D6: GBPC602,GPC602,GPC602D,GPEB602,GPEB602D,GPED602,GPED602D,GPH602,GPH602D,GPHW602,GPHW602D,GPL602,GPL602D,GPLL602,GPLL602D,GPYB602,GPYB602D,GPZB602,GPZB602D8: GBPC802,GPC802,GPC802D,GPEB802,GPEB802D,GPED802,GPED802D,GPH802,GPH802D,GPHW802,GPHW802D,GPL802,GPL802D,GPLL802,GPLL802D,GPYB802,GPYB802D,GPZB802,GPZB802D10; male RA G1/4 / female RB G1/4: GPHF1002,GPHF1002D6; male RA G1/4 / female RB G1/4: GPHF602,GPHF602D8; male RA G1/4 / female RB G1/4: GPHF802,GPHF802Dmain 8 / branch 6: GPKD8-602,GPKD8-602D4 × 2.5: UE95A040025100MBU,US98A040025100MBU These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. GPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal GBPC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV10G is an NRV non-return valve. 10 selects a 3/8-inch connection; G selects G threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 10 3/8 in port G G Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port G3/8 Effective area 60 mm² Cv 3.33 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 67 mm AB 26 mm Square B 40 mm ØBA Not specified for this drawing branch Square BC 33.6 mm P G3/8 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV10 / NRV15. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 5000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 161 g. Source: 2022 catalog printed page 300, NRV-10 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female G3/8 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): GBB male–male; GBD male–female; GBKC compression fitting; GBPC metal straight; GPC straight; GPEB branch tee; GPED run tee; GPH banjo elbow; GPHF female branch banjo; GPHW twin banjo; GPKD reducing distribution fitting; GPL elbow; GPLL extended elbow; GPYB Y; GPZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male G3/8 ↔ male G1/8: GBB0103male G3/8 ↔ male G1/4: GBB0203male G3/8 ↔ male G3/8: GBB0303male G1/2 ↔ male G3/8: GBB0304male G3/8 ↔ female G1/8: GBD0103male G3/8 ↔ female G1/4: GBD02036 × 4: GBKC0604-03,UE95A060040100MBU,US98A060040100MBU8 × 5: GBKC0805-03,UE95A080050100MBU,US98A080050100MBU8 × 5.5 or 6: GBKC0806-0310 × 6.5: GBKC1065-03,UE95A100065100MBU,US98A100065100MBU10 × 7.5 or 8: GBKC1075-0312 × 8: GBKC1208-03,UE95A120080100MBU,US98A120080100MBU12 × 9 or 10: GBKC1209-0310: GBPC1003,GPC1003,GPC1003D,GPEB1003,GPEB1003D,GPED1003,GPED1003D,GPH1003,GPH1003D,GPHW1003,GPHW1003D,GPL1003,GPL1003D,GPLL1003,GPLL1003D,GPYB1003,GPYB1003D,GPZB1003,GPZB1003D12: GBPC1203,GPC1203,GPC1203D,GPEB1203,GPEB1203D,GPED1203,GPED1203D,GPH1203,GPH1203D,GPHW1203,GPHW1203D,GPL1203,GPL1203D,GPLL1203,GPLL1203D,GPYB1203,GPYB1203D,GPZB1203,GPZB1203D6: GBPC603,GPC603,GPC603D,GPEB603,GPEB603D,GPED603,GPED603D,GPH603,GPH603D,GPHW603,GPHW603D,GPL603,GPL603D,GPLL603,GPLL603D,GPYB603,GPYB603D,GPZB603,GPZB603D8: GBPC803,GPC803,GPC803D,GPEB803,GPEB803D,GPED803,GPED803D,GPH803,GPH803D,GPHW803,GPHW803D,GPL803,GPL803D,GPLL803,GPLL803D,GPYB803,GPYB803D,GPZB803,GPZB803D10; male RA G3/8 / female RB G3/8: GPHF1003,GPHF1003D12; male RA G3/8 / female RB G3/8: GPHF1203,GPHF1203D6; male RA G3/8 / female RB G3/8: GPHF603,GPHF603D8; male RA G3/8 / female RB G3/8: GPHF803,GPHF803Dmain 10 / branch 8: GPKD10-803,GPKD10-803D These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. GPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal GBPC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV15 is an NRV non-return valve. 15 selects a 1/2-inch connection; the omitted thread suffix selects PT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 15 1/2 in port Omitted thread code PT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port PT1/2 Effective area 73 mm² Cv 4.06 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 67 mm AB 26 mm Square B 40 mm ØBA Not specified for this drawing branch Square BC 33.6 mm P PT1/2 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV10 / NRV15. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 5000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 152 g. Source: 2022 catalog printed page 300, NRV-15 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female PT1/2 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): BB male–male; BD male–female; BKC compression fitting; BPC metal straight; BPOC metal straight; PC straight; PEB branch tee; PED run tee; PH banjo elbow; PHF female branch banjo; PHW twin banjo; PL elbow; PLL extended elbow; POC round straight; PYB Y; PZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male PT1/2 ↔ male PT1/4: BB0204,BB0204-Smale PT1/2 ↔ male PT3/8: BB0304,BB0304-Smale PT1/2 ↔ male PT1/2: BB0404,BB0404-Smale PT1/2 ↔ female PT1/8: BD0104,BD0104-Smale PT1/2 ↔ female PT1/4: BD0204,BD0204-Smale PT1/2 ↔ female PT3/8: BD0304,BD0304-S10 × 6.5: BKC1065-04,BKC1065-04-S,UE95A100065100MBU,US98A100065100MBU10 × 7.5 or 8: BKC1075-04,BKC1075-04-S12 × 8: BKC1208-04,BKC1208-04-S,UE95A120080100MBU,US98A120080100MBU12 × 9 or 10: BKC1209-04,BKC1209-04-S10: BPC1004,PC1004,PC1004-S,PC1004D,PC1004D-S,PEB1004,PEB1004-S,PEB1004D,PEB1004D-S,PED1004,PED1004-S,PED1004D,PED1004D-S,PH1004,PH1004-S,PH1004D,PH1004D-S,PHW1004,PHW1004-S,PHW1004D,PHW1004D-S,PL1004,PL1004-S,PL1004D,PL1004D-S,PLL1004,PLL1004-S,PLL1004D,PLL1004D-S,POC1004,POC1004-S,POC1004D,POC1004D-S,PYB1004,PYB1004-S,PYB1004D,PYB1004D-S,PZB1004,PZB1004-S,PZB1004D,PZB1004D-S12: BPC1204,BPOC1204,PC1204,PC1204-S,PC1204D,PC1204D-S,PEB1204,PEB1204-S,PEB1204D,PEB1204D-S,PED1204,PED1204-S,PED1204D,PED1204D-S,PH1204,PH1204-S,PH1204D,PH1204D-S,PHW1204,PHW1204-S,PHW1204D,PHW1204D-S,PL1204,PL1204-S,PL1204D,PL1204D-S,PLL1204,PLL1204-S,PLL1204D,PLL1204D-S,POC1204,POC1204-S,POC1204D,POC1204D-S,PYB1204,PYB1204-S,PYB1204D,PYB1204D-S,PZB1204,PZB1204-S,PZB1204D,PZB1204D-S6: PC604,PC604-S,PC604D,PC604D-S,PL604,PL604-S,PL604D,PL604D-S8: PC804,PC804-S,PC804D,PC804D-S,PEB804,PEB804-S,PEB804D,PEB804D-S,PED804,PED804-S,PED804D,PED804D-S,PH804,PH804-S,PH804D,PH804D-S,PHW804,PHW804-S,PHW804D,PHW804D-S,PL804,PL804-S,PL804D,PL804D-S,PYB804,PYB804-S,PYB804D,PYB804D-S,PZB804,PZB804-S,PZB804D,PZB804D-S10; male RA PT1/2 / female RB PT1/2: PHF1004,PHF1004-S,PHF1004D,PHF1004D-S12; male RA PT1/2 / female RB PT1/2: PHF1204,PHF1204-S,PHF1204D,PHF1204D-S8; male RA PT1/2 / female RB PT1/2: PHF804,PHF804-S,PHF804D,PHF804D-S6 × 4: UE95A060040100MBU,US98A060040100MBU8 × 5: UE95A080050100MBU,US98A080050100MBU These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. PHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal BPC/BPOC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV15G is an NRV non-return valve. 15 selects a 1/2-inch connection; G selects G threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 15 1/2 in port G G Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port G1/2 Effective area 73 mm² Cv 4.06 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 67 mm AB 26 mm Square B 40 mm ØBA Not specified for this drawing branch Square BC 33.6 mm P G1/2 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV10 / NRV15. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 5000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 152 g. Source: 2022 catalog printed page 300, NRV-15 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female G1/2 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): GBB male–male; GBD male–female; GBKC compression fitting; GBPC metal straight; GPC straight; GPEB branch tee; GPED run tee; GPH banjo elbow; GPHF female branch banjo; GPHW twin banjo; GPL elbow; GPLL extended elbow; GPYB Y; GPZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male G1/2 ↔ male G1/4: GBB0204male G1/2 ↔ male G3/8: GBB0304male G1/2 ↔ male G1/2: GBB0404male G1/2 ↔ female G1/8: GBD0104male G1/2 ↔ female G1/4: GBD0204male G1/2 ↔ female G3/8: GBD030410 × 6.5: GBKC1065-04,UE95A100065100MBU,US98A100065100MBU10 × 7.5 or 8: GBKC1075-0412 × 8: GBKC1208-04,UE95A120080100MBU,US98A120080100MBU12 × 9 or 10: GBKC1209-0410: GBPC1004,GPC1004,GPC1004D,GPEB1004,GPEB1004D,GPED1004,GPED1004D,GPH1004,GPH1004D,GPHW1004,GPHW1004D,GPL1004,GPL1004D,GPLL1004,GPLL1004D,GPYB1004,GPYB1004D,GPZB1004,GPZB1004D12: GBPC1204,GPC1204,GPC1204D,GPEB1204,GPEB1204D,GPED1204,GPED1204D,GPH1204,GPH1204D,GPHW1204,GPHW1204D,GPL1204,GPL1204D,GPLL1204,GPLL1204D,GPYB1204,GPYB1204D,GPZB1204,GPZB1204D6: GPC604,GPC604D,GPL604,GPL604D8: GPC804,GPC804D,GPEB804,GPEB804D,GPED804,GPED804D,GPH804,GPH804D,GPHW804,GPHW804D,GPL804,GPL804D,GPYB804,GPYB804D,GPZB804,GPZB804D10; male RA G1/2 / female RB G1/2: GPHF1004,GPHF1004D12; male RA G1/2 / female RB G1/2: GPHF1204,GPHF1204D8; male RA G1/2 / female RB G1/2: GPHF804,GPHF804D6 × 4: UE95A060040100MBU,US98A060040100MBU8 × 5: UE95A080050100MBU,US98A080050100MBU These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. GPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal GBPC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV15T is an NRV non-return valve. 15 selects a 1/2-inch connection; T selects NPT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 15 1/2 in port T NPT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port NPT1/2 Effective area 73 mm² Cv 4.06 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 67 mm AB 26 mm Square B 40 mm ØBA Not specified for this drawing branch Square BC 33.6 mm P NPT1/2 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV10 / NRV15. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 5000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 152 g. Source: 2022 catalog printed page 300, NRV-15 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female NPT1/2 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): NBB male–male; NBD male–female; NBKC compression fitting; NBPC metal straight; NPC straight; NPEB branch tee; NPED run tee; NPH banjo elbow; NPHF female branch banjo; NPHW twin banjo; NPL elbow; NPLL extended elbow; NPYB Y; NPZB cross. Use Size / complete codes IN,OUT (discontinued) male NPT1/2 ↔ male NPT1/2: NBB1/2-1/2male NPT1/2 ↔ male NPT1/4: NBB1/4-1/2male NPT1/2 ↔ male NPT3/8: NBB3/8-1/2male NPT1/2 ↔ female NPT1/4: NBD1/4-1/2male NPT1/2 ↔ female NPT1/8: NBD1/8-1/2male NPT1/2 ↔ female NPT3/8: NBD3/8-1/21/2 × 1/3 in: NBKC1/2-1/3-1/23/8 × 1/4 in: NBKC3/8-1/4-1/21/2 in: NBPC1/2-1/2,NPH1/2-1/2,NPHW1/2-1/2,NPLL1/2-1/2,NPZB1/2-1/23/8 in: NBPC3/8-1/2,NPH3/8-1/2,NPHW3/8-1/2,NPLL3/8-1/2,NPZB3/8-1/21/2 in; male RA NPT1/2 / female RB NPT1/2: NPHF1/2-1/23/8 in; male RA NPT1/2 / female RB NPT1/2: NPHF3/8-1/2 IN,OUT 1/2 in: NPC1/2-1/2,NPEB1/2-1/2,NPED1/2-1/2,NPL1/2-1/2,NPYB1/2-1/23/8 in: NPC3/8-1/2,NPEB3/8-1/2,NPED3/8-1/2,NPL3/8-1/2,NPYB3/8-1/2 These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. NPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. NBPC/compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV20 is an NRV non-return valve. 20 selects a 3/4-inch connection; the omitted thread suffix selects PT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 20 3/4 in port Omitted thread code PT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port PT3/4 Effective area 230 mm² Cv 12.78 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 95 mm AB 31.5 mm Square B 52 mm ØBA Not specified for this drawing branch Square BC 46.7 mm P PT3/4 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV20 / NRV25. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 14000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 344 g. Source: 2022 catalog printed page 300, NRV-20 reference. Catalog weights are for reference only; actual weight is determined by the physical product.

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Specifications: NRV20G is an NRV non-return valve. 20 selects a 3/4-inch connection; G selects G threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 20 3/4 in port G G Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port G3/4 Effective area 230 mm² Cv 12.78 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 95 mm AB 31.5 mm Square B 52 mm ØBA Not specified for this drawing branch Square BC 46.7 mm P G3/4 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV20 / NRV25. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 14000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 344 g. Source: 2022 catalog printed page 300, NRV-20 reference. Catalog weights are for reference only; actual weight is determined by the physical product.

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Specifications: NRV20T is an NRV non-return valve. 20 selects a 3/4-inch connection; T selects NPT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 20 3/4 in port T NPT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port NPT3/4 Effective area 230 mm² Cv 12.78 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 95 mm AB 31.5 mm Square B 52 mm ØBA Not specified for this drawing branch Square BC 46.7 mm P NPT3/4 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV20 / NRV25. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 14000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 344 g. Source: 2022 catalog printed page 300, NRV-20 reference. Catalog weights are for reference only; actual weight is determined by the physical product.

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Specifications: NRV25 is an NRV non-return valve. 25 selects a 1-inch connection; the omitted thread suffix selects PT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 25 1 in port Omitted thread code PT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port PT1 Effective area 260 mm² Cv 14.44 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 95 mm AB 31.5 mm Square B 52 mm ØBA Not specified for this drawing branch Square BC 46.7 mm P PT1 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV20 / NRV25. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 14000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 315 g. Source: 2022 catalog printed page 300, NRV-25 reference. Catalog weights are for reference only; actual weight is determined by the physical product.

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Specifications: NRV25G is an NRV non-return valve. 25 selects a 1-inch connection; G selects G threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 25 1 in port G G Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port G1 Effective area 260 mm² Cv 14.44 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 95 mm AB 31.5 mm Square B 52 mm ØBA Not specified for this drawing branch Square BC 46.7 mm P G1 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV20 / NRV25. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 14000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 315 g. Source: 2022 catalog printed page 300, NRV-25 reference. Catalog weights are for reference only; actual weight is determined by the physical product.

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Specifications: NRV25T is an NRV non-return valve. 25 selects a 1-inch connection; T selects NPT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 25 1 in port T NPT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port NPT1 Effective area 260 mm² Cv 14.44 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 95 mm AB 31.5 mm Square B 52 mm ØBA Not specified for this drawing branch Square BC 46.7 mm P NPT1 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV20 / NRV25. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 14000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 315 g. Source: 2022 catalog printed page 300, NRV-25 reference. Catalog weights are for reference only; actual weight is determined by the physical product.

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Specifications: NRV10 is an NRV non-return valve. 10 selects a 3/8-inch connection; the omitted thread suffix selects PT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 10 3/8 in port Omitted thread code PT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port PT3/8 Effective area 60 mm² Cv 3.33 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 67 mm AB 26 mm Square B 40 mm ØBA Not specified for this drawing branch Square BC 33.6 mm P PT3/8 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV10 / NRV15. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 5000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 161 g. Source: 2022 catalog printed page 300, NRV-10 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female PT3/8 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): BB male–male; BD male–female; BKC compression fitting; BPC metal straight; BPOC metal straight; PC straight; PEB branch tee; PED run tee; PH banjo elbow; PHF female branch banjo; PHW twin banjo; PKD reducing distribution fitting; PL elbow; PLL extended elbow; POC round straight; PYB Y; PZB cross; UE PU tube; US PU tube. Use Size / complete codes IN,OUT male PT3/8 ↔ male PT1/8: BB0103,BB0103-Smale PT3/8 ↔ male PT1/4: BB0203,BB0203-Smale PT3/8 ↔ male PT3/8: BB0303,BB0303-Smale PT1/2 ↔ male PT3/8: BB0304,BB0304-Smale PT3/8 ↔ female PT1/8: BD0103,BD0103-Smale PT3/8 ↔ female PT1/4: BD0203,BD0203-S6 × 4: BKC0604-03,BKC0604-03-S,UE95A060040100MBU,US98A060040100MBU8 × 5: BKC0805-03,BKC0805-03-S,UE95A080050100MBU,US98A080050100MBU8 × 5.5 or 6: BKC0806-03,BKC0806-03-S10 × 6.5: BKC1065-03,BKC1065-03-S,UE95A100065100MBU,US98A100065100MBU10 × 7.5 or 8: BKC1075-03,BKC1075-03-S12 × 8: BKC1208-03,BKC1208-03-S,UE95A120080100MBU,US98A120080100MBU12 × 9 or 10: BKC1209-03,BKC1209-03-S10: BPC1003,BPOC1003,PC1003,PC1003-S,PC1003D,PC1003D-S,PEB1003,PEB1003-S,PEB1003D,PEB1003D-S,PED1003,PED1003-S,PED1003D,PED1003D-S,PH1003,PH1003-S,PH1003D,PH1003D-S,PHW1003,PHW1003-S,PHW1003D,PHW1003D-S,PL1003,PL1003-S,PL1003D,PL1003D-S,PLL1003,PLL1003-S,PLL1003D,PLL1003D-S,POC1003,POC1003-S,POC1003D,POC1003D-S,PYB1003,PYB1003-S,PYB1003D,PYB1003D-S,PZB1003,PZB1003-S,PZB1003D,PZB1003D-S12: BPC1203,BPOC1203,PC1203,PC1203-S,PC1203D,PC1203D-S,PEB1203,PEB1203-S,PEB1203D,PEB1203D-S,PED1203,PED1203-S,PED1203D,PED1203D-S,PH1203,PH1203-S,PH1203D,PH1203D-S,PHW1203,PHW1203-S,PHW1203D,PHW1203D-S,PL1203,PL1203-S,PL1203D,PL1203D-S,PLL1203,PLL1203-S,PLL1203D,PLL1203D-S,POC1203,POC1203-S,POC1203D,POC1203D-S,PYB1203,PYB1203-S,PYB1203D,PYB1203D-S,PZB1203,PZB1203-S,PZB1203D,PZB1203D-S6: BPC603,PC603,PC603-S,PC603D,PC603D-S,PEB603,PEB603-S,PEB603D,PEB603D-S,PED603,PED603-S,PED603D,PED603D-S,PH603,PH603-S,PH603D,PH603D-S,PHW603,PHW603-S,PHW603D,PHW603D-S,PL603,PL603-S,PL603D,PL603D-S,PLL603,PLL603-S,PLL603D,PLL603D-S,PYB603,PYB603-S,PYB603D,PYB603D-S,PZB603,PZB603-S,PZB603D,PZB603D-S8: BPC803,PC803,PC803-S,PC803D,PC803D-S,PEB803,PEB803-S,PEB803D,PEB803D-S,PED803,PED803-S,PED803D,PED803D-S,PH803,PH803-S,PH803D,PH803D-S,PHW803,PHW803-S,PHW803D,PHW803D-S,PL803,PL803-S,PL803D,PL803D-S,PLL803,PLL803-S,PLL803D,PLL803D-S,POC803,POC803-S,POC803D,POC803D-S,PYB803,PYB803-S,PYB803D,PYB803D-S,PZB803,PZB803-S,PZB803D,PZB803D-S10; male RA PT3/8 / female RB PT3/8: PHF1003,PHF1003-S,PHF1003D,PHF1003D-S12; male RA PT3/8 / female RB PT3/8: PHF1203,PHF1203-S,PHF1203D,PHF1203D-S6; male RA PT3/8 / female RB PT3/8: PHF603,PHF603-S,PHF603D,PHF603D-S8; male RA PT3/8 / female RB PT3/8: PHF803,PHF803-S,PHF803D,PHF803D-Smain 10 / branch 8: PKD10-803,PKD10-803-S,PKD10-803D,PKD10-803D-S These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. PHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. Metal BPC/BPOC: ≤0.9 MPa; compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. US98A/UE95A examples are separately ordered blue 100 m metric PU coils rated 1 MPa at 23°C. US98A: −20–70°C; UE95A: −40–70°C. Match OD/ID and derate as temperature rises within the NRV and fitting limits; 1 MPa is not assured throughout. Use inch tube where the selected connection requires it; metric tube is not a substitute. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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Specifications: NRV10T is an NRV non-return valve. 10 selects a 3/8-inch connection; T selects NPT threads. Product Catalog Download Airtac Product Catalog (PDF) For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Functional Alternative Airtac NRV valve series are functional alternatives to SMC AK series. Model Code Explained Parameter Details NRV Non-return valve 10 3/8 in port T NPT Technical Specifications Parameter Details Fluid Air filtered to 40 μm or finer Port NPT3/8 Effective area 60 mm² Cv 3.33 Operating pressure 0.02–1.0 MPa (catalog: 2.9–145 psi) Proof pressure 1.5 MPa (catalog: 215 psi) Temperature −20 to 70°C Body Aluminum alloy Spool POM Valve-seat seal Rubber Features and Operation The valve permits flow in one direction and blocks reverse flow. The Chinese catalog identifies its purpose as preventing reverse flow following a supply-pressure drop, including a drop caused by increased air consumption. The body IN/OUT marks and the P/A symbol identify the flow direction. The compact structure combines a POM spool with a rubber-sealed valve seat and a large effective flow area. External Dimensions — 2022 Catalog Values follow the 2022 Chinese catalog, printed page 159. A is the axial length; square and diameter marks follow their respective drawing callouts. Parameter Details A 67 mm AB 26 mm Square B 40 mm ØBA Not specified for this drawing branch Square BC 33.6 mm P NPT3/8 For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog. Flow Characteristics The applicable graph is labeled NRV10 / NRV15. It plots downstream pressure in MPa against flow in L/min, with a pressure scale from 0 to 0.7 MPa. The flow labels run from 0 to 5000 L/min, with the plotting field extending one further grid interval. Use the original curves with their circuit conditions; the plotted axes do not define a guaranteed maximum flow. Internal Components The catalog supplies separate cross-sections for NRV06/08 and NRV10–25. The list below preserves the drawing-item numbers and the components specific to each branch. Drawing item Component 1 Body 2 Spring 3 Spool 4 End cover 5 Socket-head screw 6 O-ring 7 Washer — NRV06/NRV08 drawing 8 Sealing gasket 9 Bumper — NRV10 through NRV25 drawing Series Ordering Options Parameter Details 06 1/8 in 08 1/4 in 10 3/8 in 15 1/2 in 20 3/4 in 25 1 in Thread code Omitted: PT; G: G; T: NPT Catalog Reference Weight 161 g. Source: 2022 catalog printed page 300, NRV-10 reference. Catalog weights are for reference only; actual weight is determined by the physical product. Optional Connections and Tubing IN and OUT are this NRV valve’s two female NPT3/8 connections. Forward flow is IN to OUT, corresponding to P to A in the circuit symbol; reverse flow is blocked. The listed connections fit the selected end only. Keep the IN and OUT lines separate and follow the body markings. No atmospheric-exhaust, pilot or manifold connection is assigned. Multiple keys retain each use. Tube OD is mm (in = inches); compression/tubing show OD × ID. These piping accessories are optional and ordered separately. Code-prefix uses (match the longest listed family prefix): NBB male–male; NBD male–female; NBKC compression fitting; NBPC metal straight; NPC straight; NPEB branch tee; NPED run tee; NPH banjo elbow; NPHF female branch banjo; NPHW twin banjo; NPKD reducing distribution fitting; NPL elbow; NPLL extended elbow; NPYB Y; NPZB cross. Use Size / complete codes IN,OUT (discontinued) male NPT3/8 ↔ male NPT1/4: NBB1/4-3/8male NPT1/8 ↔ male NPT3/8: NBB1/8-3/8male NPT1/2 ↔ male NPT3/8: NBB3/8-1/2male NPT3/8 ↔ male NPT3/8: NBB3/8-3/8male NPT3/8 ↔ female NPT1/4: NBD1/4-3/8male NPT3/8 ↔ female NPT1/8: NBD1/8-3/81/2 × 1/3 in: NBKC1/2-1/3-3/81/4 × 5/32 in: NBKC1/4-5/32-3/83/8 × 1/4 in: NBKC3/8-1/4-3/85/16 × 1/5 in: NBKC5/16-1/5-3/81/2 in: NBPC1/2-3/8,NPH1/2-3/8,NPHW1/2-3/8,NPLL1/2-3/8,NPZB1/2-3/81/4 in: NBPC1/4-3/8,NPH1/4-3/8,NPHW1/4-3/8,NPLL1/4-3/8,NPZB1/4-3/83/8 in: NBPC3/8-3/8,NPH3/8-3/8,NPHW3/8-3/8,NPLL3/8-3/8,NPZB3/8-3/85/16 in: NBPC5/16-3/8,NPH5/16-3/8,NPHW5/16-3/8,NPLL5/16-3/8,NPZB5/16-3/81/2 in; male RA NPT3/8 / female RB NPT3/8: NPHF1/2-3/81/4 in; male RA NPT3/8 / female RB NPT3/8: NPHF1/4-3/83/8 in; male RA NPT3/8 / female RB NPT3/8: NPHF3/8-3/85/16 in; male RA NPT3/8 / female RB NPT3/8: NPHF5/16-3/8main 3/8 / branch 5/16 in: NPKD3/8-5/16-3/8 IN,OUT 1/2 in: NPC1/2-3/8,NPEB1/2-3/8,NPED1/2-3/8,NPL1/2-3/8,NPYB1/2-3/81/4 in: NPC1/4-3/8,NPEB1/4-3/8,NPED1/4-3/8,NPL1/4-3/8,NPYB1/4-3/83/8 in: NPC3/8-3/8,NPEB3/8-3/8,NPED3/8-3/8,NPL3/8-3/8,NPYB3/8-3/85/16 in: NPC5/16-3/8,NPEB5/16-3/8,NPED5/16-3/8,NPL5/16-3/8,NPYB5/16-3/8 These optional connections and tubes are ordered separately. Match PT/G/NPT exactly and use the specified thread seal or face gasket. Both NRV ports are female and need matching male connections. Match tube OD and compression OD/ID; metric and inch sizes are not interchangeable. Use suitable soft nylon/PU tube and check seating, clearance, bends and flow. Tighten compression bodies by the hex, not tube nuts. Where listed: D is black, blank grey, -M miniature; -S denotes only the specified 304 stainless parts. NPHF fittings use male RA at the NRV; female RB requires its own matching male thread and seal and is not a tube socket. Match both adapter ends to their separate mating parts. Branch fittings join only the intended common circuit; do not connect the IN and OUT sides around the NRV and bypass its non-return function. The complete path must remain within this NRV valve’s 0.02–1.0 MPa and −20–70°C limits with air filtered to 40 µm or finer, and every stricter fitting or tube limit. Proof pressure is not working pressure. Follow the IN-to-OUT body markings and P-to-A circuit symbol. The 0.02 MPa operating minimum is not a specified cracking-pressure differential. These passive connections do not change the valve’s flow direction or non-return function. Standard push-in fittings: ≤1 MPa, −20–70°C. NBPC/compression fittings/thread adapters: ≤1 MPa. The listed metal push-in, compression and adapter groups have a 0–150°C range, limiting the connected NRV path to 0–70°C or narrower. Apply every stricter component limit; neither the 1 MPa fitting rating nor the 150°C component rating extends the NRV rating. No system vacuum rating is established. Items marked discontinued are historical service references, not current standard recommendations. Confirm availability or a manufacturer-approved replacement. An unmarked catalogue entry does not promise current production, stock or delivery.

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