Airtac 3V3 Solenoid Valve 3V308NCAI
The AirTAC Airtac 3V3 Solenoid Valve 3V308NCAI 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 voltageAC220V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.62
- Series3V3
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac 3V3 Solenoid Valve 3V308NCAI
Order the 3V308NCAI when wiring convenience matters: this 3/2 NC 1/4in valve carries a pre-wired lead-out instead of a DIN socket, so the AC220V connection lands directly on the terminal strip without ordering a separate plug. Normally closed at rest, it vents or blocks one line and springs back on power loss.
Pneumatically it is the same direct-acting coaxial poppet valve as the rest of the body: Cv 0.62, 0-0.8 MPa working range and IP65 sealing. The AC220V coil takes 10 VA, so check transformer margin if several valves energise at once; DC variants of this body sit lower at 6.5 W.
Airtac 3V3 Solenoid Valve 3V308NCAI Technical Specifications
| Model | Airtac 3V3 Solenoid Valve 3V308NCAI |
|---|---|
| Series | 3V3 |
| 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 | AC220V |
|---|---|
| Electrical entry | Flying lead (lead-out wire type) |
| Coil power | 10 VA |
| Operating pressure | 0-0.8 MPa (0-114 psi) |
| Vacuum service | Rated -102.2 kPa to 0.1 MPa |
| Flow coefficient | Cv 0.62 |
| 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 3V3 catalogue. Confirm coil voltage and thread (PT / NPT / G) against the product label before wiring.
Model Code: Airtac 3V3 Solenoid Valve 3V308NCAI
| 3V3 | 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. |
| AC220V | 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 3V3 Solenoid Valve 3V308NCAI Is Used
Pallet clamp actuation on a CNC fixture
Feeds and vents a single-acting clamp cylinder from the machine's 220 V circuit, with the flying lead landing straight on the electrical cabinet terminals.
Filter bag de-dusting pulse in a dust collector
Fires short, high-flow air pulses into filter cartridges; the NC rest state guarantees no continuous bleed of compressed air between pulses.
Vacuum cup release on a glass-handling arm
Switches the cup line on a negative-pressure circuit rated -102.2 kPa to 0.1 MPa, letting the sheet drop the instant the coil de-energises.
Is the Airtac 3V3 Solenoid Valve 3V308NCAI the Right Part?
Downsizing options from this highest-flow 3V body: the 3V2 (Cv 0.18-0.19, vacuum-rated too) covers most lighter circuits, the 3V2M (Cv 0.1) suits dense manifold mounting, and the 3V1 handles the smallest low-power tasks. This code fixes four of the five order choices - 1/4in PT port (G and NPT available to order), NC state, AC220V coil, flying-lead entry - leaving only the vacuum question, and the 3V3 body answers it with a -102.2 kPa to 0.1 MPa rating. For double-acting cylinders, move to the 5-port AirTAC 4V family.
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 3V3 Solenoid Valve 3V308NCAI FAQ
Key data: 1/4in PT port, Cv 0.62 flow coefficient, 0-0.8 MPa pressure range, vacuum service to -102.2 kPa, -20 to 70 C temperature, AC coil at 10 VA (DC variants 6.5 W), IP65 to DIN 40050, and 40 um or finer air filtration upstream. A manual override assists commissioning.
NC holds the outlet shut until energised, the fail-safe choice for clamps and blow-off. NO passes air until energised and suits circuits that must keep feeding through a power loss. This 3V308NCAI is the NC version; AirTAC lists the same body in NO if your logic needs it.
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Standard models are processed and dispatched in 3-5 business days.
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