
The AirTAC Airtac 3V2M Solenoid Valve 3V2MNCAI-20F is a genuine 3-port 2-position (3/2) solenoid valve with 1/8 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.
Twenty normally closed 3/2 valves, each with its own AC220V coil on a flying lead, come factory mounted on a single 20F base in the 3V2MNCAI-20F. Every station stays vented at the outlet until its coil is energised. Mind the electrical budget: each AC coil draws 7 VA, so a fully populated bank with all twenty valves energised at once presents about 140 VA - size the supply for that worst case, not for one station.
Because supply and wiring are shared across the block, troubleshooting is quick: one feed, one wiring run, and each valve is a plug-in element on the manifold. All stations vent through one centralised exhaust port. A manual override on each valve aids commissioning. The NC state is fixed by the dedicated base gasket and cannot be changed after purchase.
| Model | Airtac 3V2M Solenoid Valve 3V2MNCAI-20F |
|---|---|
| Series | 3V2M |
| Valve type | 3/2-way (3-port, 2-position) |
| Function | Direct-acting, single solenoid, spring return |
| Initial state | Normally closed |
| Item form | Complete assembly — 20 valves on a shared base |
| Exhaust | Centralised exhaust |
| Port size | 1/8 in |
| Thread | PT |
| Coil voltage | AC220V |
|---|---|
| Electrical entry | Flying lead (lead-out wire type) |
| Coil power | 7 VA |
| Operating pressure | 0-0.8 MPa (0-114 psi) |
| Vacuum service | Not rated for vacuum |
| Flow coefficient | Cv 0.1 |
| Temperature | -20 to 70 C |
| Construction | Coaxial shut-off (poppet), base-mounted, spring return |
| Protection | IP65 (DIN 40050) |
| Medium | Air, filtered by a 40 µm or finer element. Lubrication not required. |
Figures follow the official AirTAC 3V2M catalogue. Confirm coil voltage and thread (PT / NPT / G) against the product label before wiring.
| 3V2M | Body — sets the flow, the coil power and whether vacuum is rated. |
|---|---|
| 1/8 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. |
| 20F | 20 stations in one assembly, centralised exhaust. |
| PT | Port thread. PT ships from stock; G and NPT are available to order. |
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.
Twenty spring-return gates on a parcel sorting conveyor, each one flipped by its own manifold station and dropped back by the spring when the coil drops.
Reject pushers along a bottling line, one station per lane, each normally vented so no bottle is pushed unless its coil is deliberately energised.
Clamping and unclamping individual tool pockets on a turret or tool magazine, one 3/2 station per pocket off a single shared supply.
For twenty stations, plan the electrical side first: 20 x 7 VA = 140 VA if every AC220V coil is live simultaneously, so verify your supply and wiring gauge against the full bank. Then match the five ordering points: state (NC), voltage (AC220V), entry (flying lead), station count (20F) and exhaust (centralised, PT thread; G and NPT to order). NC/NO cannot be converted later - the dedicated base gasket does not swap states.
At Cv 0.1 per station, the manifold trades flow for density. Any single station needing more air is better served by an individually ported 3V2 (Cv 0.18 at 1/8 in, 0.19 at 1/4 in, vacuum rated) or by 3V3 at Cv 0.62 for the top flow in the range; small low-power duties can drop to 3V1 at 3.0 W DC. These valves drive single-acting cylinders only - double-acting cylinders need the 5-port AirTAC 4V series.
Confirm before you order
Each of the twenty stations is a 3/2 NC valve with Cv 0.1, pressure range 0-0.8 MPa (0-114 psi), temperature -20 to 70 C, coil power 7 VA on AC or 7.0 W on DC, and IP65 (DIN 40050) protection. The base thread is PT; G and NPT are order options.
Each 3/2 station has three ports (supply, outlet, exhaust) and either feeds the outlet or vents it, so it suits single-acting spring-return cylinders, air blow, clamping and pilot duty. It cannot drive a double-acting cylinder - that requires a 5-port valve such as the AirTAC 4V series.
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