Specifications: SR20008J2T is an Airtac 200-series mini pressure regulator with NPT 1/4 main ports. Its current configuration has 0.05–0.9 MPa adjustment, no mounting bracket, an included psi-scale pressure gauge.
Product Catalog
Download Airtac Product Catalog (PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Model Code Explained
| Code |
Meaning for this model |
| SR |
mini pressure regulator |
| 200 |
200 size series |
| 08 |
NPT 1/4 main connection |
| Blank — pressure |
Standard type; 0.05–0.9 MPa |
| J |
Without bracket |
| 2 |
Pressure gauge included; psi scale |
| T |
NPT thread |
Technical Specifications
| Parameter |
Details |
| Model |
SR20008J2T |
| Working medium |
Air |
| Main port |
NPT 1/4 |
| Pressure regulation range |
0.05–0.9 MPa |
| Maximum operating pressure |
1.0 MPa |
| Proof pressure |
1.5 MPa |
| Operating temperature |
−20–70 °C |
Weight Reference
| Parameter |
Details |
| Reference weight |
169 g; 2022 Chinese comprehensive catalog, printed page 300 / PDF page 301; published reference SR200-08J. Assigned as an estimated reference for the current configuration, not a measured product or shipping weight. no separate mass correction is calculated for pressure type (blank), gauge 2, thread T. Actual supplied-product weight may differ. |
Features and Operation
This compact regulator provides reliable adjustment for a standalone pipeline installation, using a panel mounting thread or bracket. A low-pressure option limits the maximum adjustable output to 0.4 MPa.
External and Mounting Dimensions
Dimensions are in millimeters unless a thread or other unit is shown. Lettered entries follow the catalog drawing; local callouts must not be combined into an invented length × width × height. Optional brackets and gauges are shown for reference only when their omission code is selected.
| Parameter |
Details |
| Front width |
50 mm |
| Mounting hole pitch |
34 mm |
| Front local callout |
2 mm |
| Slot width |
5.5 mm |
| Front local vertical callout |
40 mm |
| Port-axis callout |
26 mm |
| Lower local callout |
10 mm |
| Locked-height callout |
74.5 mm |
| Knob diameter |
Ø28 mm |
| Panel mounting thread |
M30×1.5 |
| Bracket thickness |
2 mm |
| Body depth |
38 mm |
| Side local callout |
30 mm |
| Gauge projection reference |
(51.5) mm |
| Gauge diameter |
Ø42 mm |
| Gauge taps |
2 × 1/8 |
| Main ports |
2 × NPT 1/4 |
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Accessories and Installation
| Parameter |
Details |
| Mounting bracket |
Omitted by J; do not count a bracket as included |
Flow / Performance Characteristics
| Parameter |
Details |
| Chart specimen |
SR20006; the 08 port is not separately plotted |
| Pressure-chart horizontal axis |
Inlet pressure, 0–1.0 MPa |
| Pressure-chart vertical axis |
Outlet pressure, 0.18–0.22 MPa |
| Flow horizontal axis |
Air flow, 0–1000 L/min; 200 L/min labels |
| Flow vertical axis |
Outlet pressure, 0–0.6 MPa |
| Flow condition |
Inlet pressure 0.7 MPa |
These values describe the printed chart axes and conditions. An axis limit is not a rated flow or a guaranteed tolerance. Curves for a representative port or configuration are series references; use the original PDF to read the plotted relationships.
Series Ordering Options
The following choices belong to the catalog family. They are alternatives, not a list of everything included with the current model.
| Parameter |
Details |
| Main-port choices |
06: 1/8; 08: 1/4 |
| Pressure options |
Blank: 0.05–0.9 MPa; L: 0.03–0.4 MPa |
| Bracket |
Blank: included; J: omitted |
| Gauge |
N: omitted; 1: MPa, 2: psi, 3: bar, 4: kgf/cm² and psi |
| Thread |
Blank: PT; G: G; T: NPT |
| Scale / thread combination |
1 or 4: PT thread; 2: NPT thread with T; 3: G thread with G |
Optional Piping Accessories
IN = the SR regulator’s NPT1/4 female supply-air inlet on the left in the catalog drawing; OUT = its NPT1/4 female regulated-air outlet on the right. Match these separate connections and follow the actual body’s IN → OUT markings; do not bridge or bypass the regulator. 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: NBB1/4-1/2
male NPT1/4 ↔ male NPT1/4: NBB1/4-1/4
male NPT3/8 ↔ male NPT1/4: NBB1/4-3/8
male NPT1/8 ↔ male NPT1/4: NBB1/8-1/4
male NPT1/4 ↔ female NPT1/8: NBD1/8-1/4
1/2 × 1/3 in: NBKC1/2-1/3-1/4
1/4 × 5/32 in: NBKC1/4-5/32-1/4
3/8 × 1/4 in: NBKC3/8-1/4-1/4
5/16 × 1/5 in: NBKC5/16-1/5-1/4
1/2 in: NBPC1/2-1/4,NPLL1/2-1/4
1/4 in: NBPC1/4-1/4,NPH1/4-1/4,NPHW1/4-1/4,NPLL1/4-1/4,NPZB1/4-1/4
3/8 in: NBPC3/8-1/4,NPH3/8-1/4,NPHW3/8-1/4,NPLL3/8-1/4,NPZB3/8-1/4
5/16 in: NBPC5/16-1/4,NPH5/16-1/4,NPHW5/16-1/4,NPLL5/16-1/4,NPZB5/16-1/4
1/4 in; male RA NPT1/4 / female RB NPT1/4: NPHF1/4-1/4
3/8 in; male RA NPT1/4 / female RB NPT1/4: NPHF3/8-1/4
5/16 in; male RA NPT1/4 / female RB NPT1/4: NPHF5/16-1/4
main 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,NPYB1/2-1/4
1/4 in: NPC1/4-1/4,NPEB1/4-1/4,NPED1/4-1/4,NPL1/4-1/4,NPYB1/4-1/4
3/8 in: NPC3/8-1/4,NPEB3/8-1/4,NPED3/8-1/4,NPL3/8-1/4,NPYB3/8-1/4
5/16 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 for the SR regulator. Match PT/G/NPT exactly and use the specified thread seal or face gasket. IN and OUT are female ports and require their own matching male connections. Follow the body’s normal IN → OUT markings; do not bridge or bypass the regulator. Keep the main air lines separate from the gauge connections and mounting features.
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, support and required flow. Tighten compression bodies by the hex, not tube nuts. Where listed, a D suffix means black, blank means grey, -M means miniature, and -S applies only to the specified 304 stainless parts.
NPHF fittings use male RA at the selected IN or OUT port; 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. Keep every extra branch on its assigned side of the regulator; do not connect IN to OUT around the regulator or use a mounting feature as an air connection.
The regulator’s maximum inlet pressure is 1.0 MPa; this configuration’s adjustable outlet range is 0.05–0.9 MPa. Keep actual IN pressure within the inlet limit and actual OUT pressure within the selected regulation range and downstream limits. Every fitting, seal and tube must satisfy its own local pressure rating during operation, adjustment and pressure changes. The 1.5 MPa proof pressure is not a continuous working rating; the 1 MPa inlet limit does not mean the outlet can be regulated to 1 MPa.
Use within −20–70°C and every stricter accessory limit. Confirm that fittings, seals, tubing and downstream equipment are compatible with the actual air contaminants and any upstream lubricant or additives. These are main-air connections, not gauge or process-liquid lines. This regulator does not add filtration, lubrication or drying, and does not establish oil-free air or a dew-point rating. These selections do not establish liquid or vacuum service for the listed air-piping accessories.
Confirm the required inlet supply, pressure drop and installed flow at the chosen outlet setting. The printed flow chart uses SR20006 at 0.7 MPa inlet pressure; the 1/4 in 08 port is not separately plotted. Its 1000 L/min axis limit is not a rated flow or a guaranteed installed operating point. Use the original plotted relationships and verify actual circuit requirements rather than treating a chart boundary as capacity.
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 component range, so a path using them is limited to 0–70°C or narrower with this regulator. A lower-rated fitting at IN requires a correspondingly lower inlet pressure; the unit’s 1 MPa inlet rating does not raise any accessory rating. Confirm compatibility with the actual air contaminants and lubricant.
When J is selected, the mounting bracket is omitted; without J, it is included as stated in the original specification. Support the regulator and connected piping. M30×1.5 is the panel-mounting thread, not an air port. Gauge code N omits the gauge. For the included-gauge configurations, codes 1 and 4 select MPa and dual kgf/cm²/psi scales respectively, with PT main threads; code 2 selects psi with T/NPT, and code 3 selects bar with G main threads. These main-thread and scale choices do not establish the thread standard of the two nominal 1/8 gauge tappings. No listed item is assigned to those gauge tappings or to a mounting or drain feature.
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.
