
The AirTAC Airtac 3V2 Solenoid Valve 3V206NCF 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.
3V206NCF is a 3/2-way, normally closed solenoid valve with a PT1/8 port. At rest the spring holds the outlet vented, so no air reaches the line until the DC12V coil is energised - a fail-safe posture for clamps and blow circuits. It is direct-acting with a coaxial poppet, sealing on a single axis with no minimum pilot pressure to shift.
Flow through the 1/8in port is Cv 0.18 (3.2 mm2 effective area). The body is rated for negative pressure from -102.2 kPa to 0.1 MPa, a rating the 3V1 and 3V2M families do not carry, so this one valve can switch both pressure and vacuum circuits. Genuine AirTAC part, quoted on RFQ.
| Model | Airtac 3V2 Solenoid Valve 3V206NCF |
|---|---|
| Series | 3V2 |
| Valve type | 3/2-way (3-port, 2-position) |
| Function | Direct-acting, single solenoid, spring return |
| Initial state | Normally closed |
| Port size | 1/8 in |
| Thread | PT |
| Coil voltage | DC12V |
|---|---|
| Electrical entry | DIN plug (DIN socket 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 0.18 (3.2 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.
| 3V2 | 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. |
| DC12V | Coil voltage. A = AC220V, B = DC24V, C = AC110V, E = AC24V, F = DC12V. |
| — | Electrical entry: I = flying lead, otherwise a DIN plug. |
| 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.
Battery-fed circuits on service trucks and agricultural sprayers: the 7.0 W DC12V coil runs straight from the vehicle supply without a converter, and the NC state keeps the blow nozzle shut when the power is off.
A spring-return clamp on a packaging machine stays released whenever power is lost, because the normally closed valve vents the cylinder port as its default condition.
On a small PCB gantry the valve switches vacuum lines down to -102.2 kPa, holding suction cups between pick and release without a separate vacuum valve.
Run the 5-point check: 1/8in PT thread (G and NPT are order options), normally closed start, DC12V coil at 7.0 W, DIN plug entry, and whether the duty involves vacuum. If the machine is battery-fed and every watt counts, the 3V1 series drops coil draw to 3.0 W on DC24V - but it gives up the vacuum rating. When many stations must share one base, the 3V2M manifold version trades flow (Cv 0.1) for density; keep this individually ported 3V2 when flow matters.
Need a bigger orifice? 3V3 gives a 1/4in port at Cv 0.62 and stays vacuum-rated. For a double-acting cylinder you need a 5-port valve - go to the AirTAC 4V series.
Confirm before you order
The 1/8in port gives 3.2 mm2 effective area, Cv 0.18; the 1/4in 3V208 body gives 3.4 mm2, Cv 0.19. Pressure range is 0-0.8 MPa, vacuum rating -102.2 kPa to 0.1 MPa, media temperature -20 to 70 C, coil power 7.0 W on DC (7 VA on AC), protection IP65. Filter the air to 40 um or finer; lubrication is not required.
No. With three ports and two states a 3V2 either feeds the outlet or vents it to exhaust, which suits single-acting spring-return cylinders, air blow, clamps and pilot duty. A double-acting cylinder needs a 5-port valve such as the AirTAC 4V series.
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