Airtac 3V2 series: pneumatic solenoid valve - 3V208NCEIT

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Description

Specifications: Three-port, two-position solenoid valve; Series: 2; Port size: 1/4 inch; Initial state: normally closed (NC); Rated voltage: 24 V AC; Electrical connection: flying leads, 0.5 m lead length; Port thread: NPT1/4.

Product Catalog

Download Airtac Product Catalog (PDF)

For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

Airtac 3V2 series valves are functional alternatives to SMC VT307 series valves.

Model Code Explained

This model: 3V208NCEIT

Model code Meaning for this model
3V Three-port, two-position solenoid valve
2 Series 2
08 1/4 inch port size
NC Normally closed (NC)
E 24 V AC
I Flying leads, 0.5 m lead length
T NPT1/4 ports

Technical Specifications

Parameter Specifications for this model
Model 3V208NCEIT
Product type Three-port, two-position (3/2-way) solenoid valve
Operation Direct acting; normally closed (NC)
Working medium Air filtered through a 40 μm filter
Port threads NPT1/4; three ports
Effective flow area 3.4 mm²
Flow coefficient Cv = 0.19
Lubrication Not required
Operating pressure: standard service 0–0.8 MPa (0–114 psi), as stated in the catalog
Vacuum application Suitable for vacuum (negative-pressure) applications; confirm the required operating range before selection.
Proof pressure 1.2 MPa (175 psi), as stated in the catalog
Operating temperature −20 to 70 °C
Body material Aluminum alloy

Electrical Specifications

Parameter Specification
Rated voltage 24 V AC
Operating voltage tolerance AC: ±15%
Power consumption 7 VA (AC)
Protection rating IP65 (DIN 40050)
Insulation class Class B
Electrical connection Flying leads
Lead length 0.5 m
Energization time 0.05 s or less
Maximum operating frequency 10 cycles/s under no-load conditions

Features and Operation

  • Direct-acting switching; this model is normally closed (NC).
  • Coaxial shut-off structure for effective sealing and high airflow.
  • No additional oil lubrication is required.
  • A manual override assists with installation and commissioning.
  • The series offers several standard voltages; use the voltage specified for this model.
  • The catalog also identifies vacuum (negative-pressure) applications.

Symbol ports: P = pressure supply, A = working port, R = exhaust. When de-energized, P is blocked and A connects to R. When energized, P connects to A and R is blocked. The spring returns the valve to its normal state. Refer to the matching NC symbol in the PDF catalog.

External and Mounting Dimensions

For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

Dimensions below follow the flying lead drawing on printed page 36 of the 2022 catalog. Lengths, spacings and depths are in mm. Each local dimension refers to its own dimension line; use the PDF drawing to locate it.

Dimension location Catalog dimension
Drawing configuration Flying lead version
Side view: upper horizontal dimension 38.5 mm
Side view: height dimension 66.5 mm
Front view: body width 29.5 mm
Front view: local horizontal and vertical dimensions 13 mm and 13 mm; separate dimension lines
Side view: bottom horizontal dimension 33 mm
Side view: lower vertical dimensions 22.5 mm and 10.3 mm; separate dimension lines
Rear port center height for this port size 13.5 mm
Port callouts for this model 3 × NPT1/4
Bottom view: counterbores 2 × Ø6 mm counterbores, depth 4 mm
Bottom view: through holes 2 × Ø3.3 mm through holes
Mounting/bracket view: horizontal dimensions 37, 28 and 25 mm; each belongs to its own dimension line.
Mounting/bracket view: vertical dimensions 18.6, 33, 46 and 55 mm; each belongs to its own dimension line.
Threaded mounting holes shown 2 × M4 × 0.7; depth 7 mm.
Two bracket mounting openings The drawing marks 2–4.5; the opening width dimension is 4.5 mm.
Side view: mounting plate thickness 2 mm; mounting plate is shown as optional on the valve drawing.

The standard drawing labels 06 ports as 3–PT1/8 and 08 ports as 3–PT1/4. The actual thread on this model is NPT1/4; G and NPT suffixes specify their respective threads. The drawing identifies the manual override and shows the mounting plate as optional.

Optional Mounting Accessory

Parameter Specification
Ordering code F-3V2FA
Name FA mounting plate for 3V2 series valves
Supply status Optional mounting accessory; the valve model code does not specify an included FA mounting plate.
Accessory code breakdown F: mounting accessory; 3V2: valve series; FA: FA mounting plate

Flow / Performance Characteristics

The catalog flow graph is labeled 3V208NC. This model belongs to that valve group.

Graph element Catalog reference
Graph model 3V208NC
Horizontal axis Flow rate in L/min; marks: 0, 50, 100, 150, 200, 250, 300, 350
Vertical axis Operating pressure in MPa; marks: 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7
Reading the graph Use the original plotted curves in the PDF catalog. The 350 L/min axis limit is not a rated-flow specification.

Internal Components

Item numbers refer to the series internal-structure drawing on printed page 35. They identify components, not quantities supplied in an accessory kit.

Drawing item Component
1 Countersunk screw
2 Spacer
3 Spool assembly
4 Spring
5 Body
6 Gasket
7 Electromagnet assembly
8 Push rod
9 Coil
10 Moving armature assembly
11 Retaining washer
12 Retaining nut
13 Manual override button
14 Electrical connector
15 Connector gasket

Series Ordering Options

Series reference only: these are alternative ordering options. The configuration of this product is stated in Specifications and Model Code Explained above.

Valve ordering sequence: 3V + 2 + port size + initial state + rated voltage + electrical connection + thread code. The catalog example is 3V208NCA.

Option Available series configurations
Valve type / series 3V: three-port, two-position solenoid valve; 2: Series 2
Port size 06: 1/8 inch; 08: 1/4 inch
Initial state NC: normally closed; NO: normally open
Rated voltage A: 220 V AC; B: 24 V DC; C: 110 V AC; E: 24 V AC; F: 12 V DC
Electrical connection Blank: DIN connector; I: flying leads, lead length 0.5 m
Port thread Blank: PT; G: G thread; T: NPT
Flow area by port size 06: 3.2 mm² (Cv 0.18); 08: 3.4 mm² (Cv 0.19)
Electrical reference AC: 7 VA, voltage tolerance ±15%; DC: 7.0 W, voltage tolerance ±10%
Other drawing dimensions DIN reference: upper horizontal span 65.5 mm; front-view height 74 mm. Rear-port center height: 06 = 15 mm; 08 = 13.5 mm. Refer to each separate view.

Reference Weight

Catalog reference weight: 157 g. The 2022 AirTAC catalog lists the 3V2 series at 157 g; individual voltage and thread options are not separately weighed. Actual weight is subject to the physical product; this is not a measured packed shipping weight.

Product form

Specifications: Three-port, two-position solenoid valve; Series: 2; Port size: 1/4 inch; Initial state: normally closed (NC); Rated voltage: 24 V... Read more

SKU: 3V208NCEIT

$43.98 Incl. VAT

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    Description

    Specifications: Three-port, two-position solenoid valve; Series: 2; Port size: 1/4 inch; Initial state: normally closed (NC); Rated voltage: 24 V AC; Electrical connection: flying leads, 0.5 m lead length; Port thread: NPT1/4.

    Product Catalog

    Download Airtac Product Catalog (PDF)

    For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

    Airtac 3V2 series valves are functional alternatives to SMC VT307 series valves.

    Model Code Explained

    This model: 3V208NCEIT

    Model code Meaning for this model
    3V Three-port, two-position solenoid valve
    2 Series 2
    08 1/4 inch port size
    NC Normally closed (NC)
    E 24 V AC
    I Flying leads, 0.5 m lead length
    T NPT1/4 ports

    Technical Specifications

    Parameter Specifications for this model
    Model 3V208NCEIT
    Product type Three-port, two-position (3/2-way) solenoid valve
    Operation Direct acting; normally closed (NC)
    Working medium Air filtered through a 40 μm filter
    Port threads NPT1/4; three ports
    Effective flow area 3.4 mm²
    Flow coefficient Cv = 0.19
    Lubrication Not required
    Operating pressure: standard service 0–0.8 MPa (0–114 psi), as stated in the catalog
    Vacuum application Suitable for vacuum (negative-pressure) applications; confirm the required operating range before selection.
    Proof pressure 1.2 MPa (175 psi), as stated in the catalog
    Operating temperature −20 to 70 °C
    Body material Aluminum alloy

    Electrical Specifications

    Parameter Specification
    Rated voltage 24 V AC
    Operating voltage tolerance AC: ±15%
    Power consumption 7 VA (AC)
    Protection rating IP65 (DIN 40050)
    Insulation class Class B
    Electrical connection Flying leads
    Lead length 0.5 m
    Energization time 0.05 s or less
    Maximum operating frequency 10 cycles/s under no-load conditions

    Features and Operation

    • Direct-acting switching; this model is normally closed (NC).
    • Coaxial shut-off structure for effective sealing and high airflow.
    • No additional oil lubrication is required.
    • A manual override assists with installation and commissioning.
    • The series offers several standard voltages; use the voltage specified for this model.
    • The catalog also identifies vacuum (negative-pressure) applications.

    Symbol ports: P = pressure supply, A = working port, R = exhaust. When de-energized, P is blocked and A connects to R. When energized, P connects to A and R is blocked. The spring returns the valve to its normal state. Refer to the matching NC symbol in the PDF catalog.

    External and Mounting Dimensions

    For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

    Dimensions below follow the flying lead drawing on printed page 36 of the 2022 catalog. Lengths, spacings and depths are in mm. Each local dimension refers to its own dimension line; use the PDF drawing to locate it.

    Dimension location Catalog dimension
    Drawing configuration Flying lead version
    Side view: upper horizontal dimension 38.5 mm
    Side view: height dimension 66.5 mm
    Front view: body width 29.5 mm
    Front view: local horizontal and vertical dimensions 13 mm and 13 mm; separate dimension lines
    Side view: bottom horizontal dimension 33 mm
    Side view: lower vertical dimensions 22.5 mm and 10.3 mm; separate dimension lines
    Rear port center height for this port size 13.5 mm
    Port callouts for this model 3 × NPT1/4
    Bottom view: counterbores 2 × Ø6 mm counterbores, depth 4 mm
    Bottom view: through holes 2 × Ø3.3 mm through holes
    Mounting/bracket view: horizontal dimensions 37, 28 and 25 mm; each belongs to its own dimension line.
    Mounting/bracket view: vertical dimensions 18.6, 33, 46 and 55 mm; each belongs to its own dimension line.
    Threaded mounting holes shown 2 × M4 × 0.7; depth 7 mm.
    Two bracket mounting openings The drawing marks 2–4.5; the opening width dimension is 4.5 mm.
    Side view: mounting plate thickness 2 mm; mounting plate is shown as optional on the valve drawing.

    The standard drawing labels 06 ports as 3–PT1/8 and 08 ports as 3–PT1/4. The actual thread on this model is NPT1/4; G and NPT suffixes specify their respective threads. The drawing identifies the manual override and shows the mounting plate as optional.

    Optional Mounting Accessory

    Parameter Specification
    Ordering code F-3V2FA
    Name FA mounting plate for 3V2 series valves
    Supply status Optional mounting accessory; the valve model code does not specify an included FA mounting plate.
    Accessory code breakdown F: mounting accessory; 3V2: valve series; FA: FA mounting plate

    Flow / Performance Characteristics

    The catalog flow graph is labeled 3V208NC. This model belongs to that valve group.

    Graph element Catalog reference
    Graph model 3V208NC
    Horizontal axis Flow rate in L/min; marks: 0, 50, 100, 150, 200, 250, 300, 350
    Vertical axis Operating pressure in MPa; marks: 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7
    Reading the graph Use the original plotted curves in the PDF catalog. The 350 L/min axis limit is not a rated-flow specification.

    Internal Components

    Item numbers refer to the series internal-structure drawing on printed page 35. They identify components, not quantities supplied in an accessory kit.

    Drawing item Component
    1 Countersunk screw
    2 Spacer
    3 Spool assembly
    4 Spring
    5 Body
    6 Gasket
    7 Electromagnet assembly
    8 Push rod
    9 Coil
    10 Moving armature assembly
    11 Retaining washer
    12 Retaining nut
    13 Manual override button
    14 Electrical connector
    15 Connector gasket

    Series Ordering Options

    Series reference only: these are alternative ordering options. The configuration of this product is stated in Specifications and Model Code Explained above.

    Valve ordering sequence: 3V + 2 + port size + initial state + rated voltage + electrical connection + thread code. The catalog example is 3V208NCA.

    Option Available series configurations
    Valve type / series 3V: three-port, two-position solenoid valve; 2: Series 2
    Port size 06: 1/8 inch; 08: 1/4 inch
    Initial state NC: normally closed; NO: normally open
    Rated voltage A: 220 V AC; B: 24 V DC; C: 110 V AC; E: 24 V AC; F: 12 V DC
    Electrical connection Blank: DIN connector; I: flying leads, lead length 0.5 m
    Port thread Blank: PT; G: G thread; T: NPT
    Flow area by port size 06: 3.2 mm² (Cv 0.18); 08: 3.4 mm² (Cv 0.19)
    Electrical reference AC: 7 VA, voltage tolerance ±15%; DC: 7.0 W, voltage tolerance ±10%
    Other drawing dimensions DIN reference: upper horizontal span 65.5 mm; front-view height 74 mm. Rear-port center height: 06 = 15 mm; 08 = 13.5 mm. Refer to each separate view.

    Reference Weight

    Catalog reference weight: 157 g. The 2022 AirTAC catalog lists the 3V2 series at 157 g; individual voltage and thread options are not separately weighed. Actual weight is subject to the physical product; this is not a measured packed shipping weight.

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