Airtac 3V2 Solenoid Valve 3V208NCEI
The AirTAC Airtac 3V2 Solenoid Valve 3V208NCEI 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 voltageAC24V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.19
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V208NCEI
The 3V208NCEI pairs an AC24V coil with a lead-out wire, letting you wire the valve straight to a junction box or machine harness when no DIN plug connector is fitted in the panel. Normally closed on 1/4in PT ports, it keeps the outlet vented until energised, then switches supply air to the line and exhausts it again on drop-out.
It is a direct-acting, single-solenoid, spring-return 3/2 with a coaxial poppet seat, giving tight sealing even at zero pressure. Per-port flow is Cv 0.19 (3.4 mm2 effective area). The coil draws 7 VA and the assembly is protected to IP65 (DIN 40050).
Airtac 3V2 Solenoid Valve 3V208NCEI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V208NCEI |
|---|---|
| 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 | AC24V |
|---|---|
| Electrical entry | Flying lead (lead-out wire type) |
| Coil power | 7 VA |
| 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 3V208NCEI
| 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. |
| AC24V | 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 3V208NCEI Is Used
Gripper valve on a small SCARA robot
The lead-out wire connects directly to the cell junction box, and the NC state releases the part the moment control power drops.
Ejector blow-off on an injection mould
AC24V suits press control cabinets; energised, the Cv 0.19 flow clears the finished part from the mould face in one short pulse.
Vacuum transfer of vials in pharma filling
The -102.2 kPa negative-pressure rating supports cup or nozzle vacuum lines, and IP65 (DIN 40050) protects the coil against routine washdown.
Is the Airtac 3V2 Solenoid Valve 3V208NCEI the Right Part?
Before ordering, check the full code against your requirement: 1/4in PT ports, normally closed, AC24V, flying-lead wiring, and vacuum capability if your grippers or ejectors run negative pressure (rated -102.2 kPa to 0.1 MPa). Where the duty is minimal, the 3V1 offers the lighter 3.0 W DC24V coil; where many valves must share one base, the 3V2M manifold version trades flow (Cv 0.1) for compactness. Where much more air is needed, the 3V3 at Cv 0.62 is the real step.
A double-acting cylinder calls for a 5-port AirTAC 4V valve 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 3V208NCEI FAQ
Port 1/4in PT; effective area 3.4 mm2, Cv 0.19 per port (3V206 equals 3.2 mm2 and Cv 0.18). Pressure 0-0.8 MPa and vacuum rating -102.2 kPa to 0.1 MPa. Temperature -20 to 70 C. Coil: AC24V on this code, drawing 7 VA (DC versions 7.0 W). Electrical entry is a flying lead; protection is IP65 (DIN 40050).
Yes - the 3V2 body is rated for negative-pressure service from -102.2 kPa to 0.1 MPa, a capability the 3V1 and 3V2M do not share, so it can serve vacuum cup and transfer lines as well as pressure circuits. Note this is a pressure rating only; vacuum flow and pump-down figures depend on your pump and tubing, so confirm them from the datasheet for your build.
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