Airtac 3V2 Solenoid Valve 3V208NCFI
The AirTAC Airtac 3V2 Solenoid Valve 3V208NCFI is a genuine 3-port 2-position (3/2) solenoid valve with 1/4 in ports. It either feeds its outlet or vents it to exhaust, which is what makes it the valve for single-acting cylinders, on/off air blow, clamping, vacuum switching and pilot duty.
- Valve type3/2-way (3-port, 2-position)
- Initial stateNormally closed
- Port size1/4 in
- Coil voltageDC12V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.19
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V208NCFI
With the I suffix, 3V208NCFI arrives with a pre-wired lead-out instead of a DIN socket, so the coil connects by flying lead - no separate plug to buy or seat. The valve is a normally closed, direct-acting 3/2 poppet unit on a 1/4in PT port: three ports, two states, feeding the outlet only while the coil is energised and venting it the moment the spring resets.
The DC12V coil draws 7.0 W and the coaxial shut-off poppet keeps a tight seat across the 0-0.8 MPa range; this body is also rated for negative pressure down to -102.2 kPa, a capability the 3V1 and 3V2M families do not have. Per-port flow is Cv 0.19, or 3.4 mm2 effective area.
Airtac 3V2 Solenoid Valve 3V208NCFI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V208NCFI |
|---|---|
| Series | 3V2 |
| Valve type | 3/2-way (3-port, 2-position) |
| Function | Direct-acting, single solenoid, spring return |
| Initial state | Normally closed |
| Port size | 1/4 in |
| Thread | PT |
| Coil voltage | DC12V |
|---|---|
| Electrical entry | Flying lead (lead-out wire type) |
| Coil power | 7.0 W |
| Operating pressure | 0-0.8 MPa (0-114 psi) |
| Vacuum service | Rated -102.2 kPa to 0.1 MPa |
| Flow coefficient | Cv 0.19 (3.4 mm2 effective area) |
| Temperature | -20 to 70 C |
| Construction | Coaxial shut-off (poppet), direct-acting, spring return |
| Protection | IP65 (DIN 40050) |
| Medium | Air, filtered by a 40 µm or finer element. Lubrication not required. |
Figures follow the official AirTAC 3V2 catalogue. Confirm coil voltage and thread (PT / NPT / G) against the product label before wiring.
Model Code: Airtac 3V2 Solenoid Valve 3V208NCFI
| 3V2 | Body — sets the flow, the coil power and whether vacuum is rated. |
|---|---|
| 1/4 in | Port size. M5, 06 = 1/8 in, 08 = 1/4 in, 10 = 3/8 in. |
| NC | Normally closed: no air at the outlet until the coil is energised. |
| DC12V | Coil voltage. A = AC220V, B = DC24V, C = AC110V, E = AC24V, F = DC12V. |
| I | Electrical entry: I = flying lead, otherwise a DIN plug. |
| PT | Port thread. PT ships from stock; G and NPT are available to order. |
What a 3/2 Valve Does
A 3/2 valve has three ports — supply, outlet and exhaust — and two states. It either feeds the outlet or vents it to exhaust, and that is the whole job.
That makes it the right valve for a single-acting (spring-return) cylinder, on/off air blow, a clamp, switching a vacuum generator or suction cup, and piloting a larger valve.
It cannot run a double-acting cylinder. A double-acting cylinder needs air alternately on two sides, which takes a 5-port valve — the AirTAC 4V series.
Where the Airtac 3V2 Solenoid Valve 3V208NCFI Is Used
Pneumatic swing clamp on a welding fixture
Energise to push the clamp; cut power and the NC valve exhausts the cylinder so its spring opens it - a fail-safe posture at the weld station.
Bagging machine interlock
The lead-out wires straight into the panel harness, gating air to a single-acting pusher that kicks misaligned pouches off the conveyor.
Pilot stage on a process skid
Use the valve to pressurise and dump the pilot port of a larger air-operated process valve, keeping the main actuator solenoid out of the hazardous area.
Is the Airtac 3V2 Solenoid Valve 3V208NCFI the Right Part?
Step down when you can: 3V1 fits light duties where coil power dominates (3.0 W on its DC24V coil against 7.0 W here), and 3V2M suits a compact manifold build where shared-base flow of Cv 0.1 is enough. For real extra flow, 3V3 offers Cv 0.62 on 1/4in and keeps the vacuum rating. Order by five decisions: 1/8in or 1/4in port (PT as standard, G or NPT to order), NC or NO start state, coil voltage, DIN plug versus flying lead, and any vacuum in the duty. Double-acting cylinders are a job for the 5-port AirTAC 4V range instead.
Confirm before you order
- ✓ Port size and thread (PT from stock; G / NPT to order)
- ✓ Initial state — NC or NO, ordered up front
- ✓ Coil voltage matches your controller output
- ✓ Electrical entry — DIN plug or flying lead
- ✓ Single valve, bare base, or complete assembly
- ✓ Single-acting duty, not double-acting
Installation & Wiring Notes
- check Use clean air filtered to 40µm or finer.
- check Stay within 0-0.8 MPa (0-114 psi) operating pressure.
- check Match the coil voltage to your controller output.
- check Use the manual override to test before powering up.
- check Leave the exhaust port clear, or fit a silencer.
- check Wiring by qualified personnel, per AirTAC documentation.
Airtac 3V2 Solenoid Valve 3V208NCFI FAQ
Effective area and Cv: 3.4 mm2 and 0.19 for this 1/4in body, 3.2 mm2 and 0.18 for the 1/8in version. Operating pressure 0-0.8 MPa; vacuum duty -102.2 kPa to 0.1 MPa. Temperature -20 to 70 C. Coil: 7 VA on AC, 7.0 W on DC. Ingress protection IP65 (DIN 40050).
The I suffix supplies the coil already wired with a lead-out, useful where a plug-in connector could loosen under vibration or where the coil is wired into a loom during build. Function, flow (Cv 0.19 on this 1/4in port) and pressure rating are otherwise the same. Confirm lead length and termination from the datasheet before ordering.
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