Airtac 3V2 Solenoid Valve 3V206NCA
The AirTAC Airtac 3V2 Solenoid Valve 3V206NCA 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.
- Valve type3/2-way (3-port, 2-position)
- Initial stateNormally closed
- Port size1/8 in
- Coil voltageAC220V
- Electrical entryDIN plug (DIN socket type)
- Flow (Cv)0.18
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V206NCA
3V206NCA is a normally closed 3/2 solenoid valve: with the coil de-energised the spring holds the poppet shut, so the outlet stays vented and no air reaches the actuator until you apply AC220V. Being direct-acting with a coaxial poppet, it needs no minimum pressure differential and will feed or vent a single line even at zero bar.
On the PT1/8 port it offers an effective area of 3.2 mm2 and a flow coefficient Cv 0.18, while the AC220V coil draws 7 VA. The valve is also rated for negative-pressure service down to -102.2 kPa, so one valve type can handle both pressure and vacuum circuits on the same machine.
Airtac 3V2 Solenoid Valve 3V206NCA Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V206NCA |
|---|---|
| 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 | AC220V |
|---|---|
| Electrical entry | DIN plug (DIN socket 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 0.18 (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.
Model Code: Airtac 3V2 Solenoid Valve 3V206NCA
| 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. |
| AC220V | 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. |
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 3V206NCA Is Used
Vacuum pick-up on a lab analyser
The NC valve stays vented until energised, so sample cups are only drawn onto the suction head when the analyzer PLC applies AC220V - and the -102.2 kPa rating lets the same valve open the vacuum line.
Single-acting clamping on a welding fixture
De-energising vents the clamp cylinder to exhaust through the third port, so the jig releases safely on power loss rather than staying locked.
Intermittent air blow on a paint booth
A normally closed feed means the blow nozzle stays dead between cycles, avoiding wasted compressed air from a continuously open line.
Is the Airtac 3V2 Solenoid Valve 3V206NCA the Right Part?
Confirm five points before ordering: the PT1/8 port (PT is the standard thread on this family; G and NPT are catalogue options to order), normally closed initial state, AC220V coil, DIN plug entry, and whether the duty involves vacuum. If the cycle is small and coil power is critical, the 3V1 needs only 3.0 W on DC24V; if many valves must sit side by side, 3V2M trades flow (Cv 0.1 through its base) for manifold density. When Cv 0.18 is not enough, the real move is the 1/4in 3V3 at Cv 0.62, which is also vacuum-rated. Driving a double-acting cylinder requires a 5-port valve - see the AirTAC 4V series.
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 3V206NCA FAQ
The 3/2 body works at 0-0.8 MPa and is rated for vacuum service at -102.2 kPa to 0.1 MPa, across a temperature range of -20 to 70 C. Effective area and Cv are 3.2 mm2 and 0.18 on the 1/8in port, and 3.4 mm2 and 0.19 on the 1/4in version of the series. Coil power is 7 VA on AC and 7.0 W on DC models, and the coil housing carries IP65 protection (DIN 40050).
No. A 3/2 valve has three ports - supply, outlet and exhaust - and only one outlet line, which suits single-acting spring-return cylinders, clamps, blow duty and piloting a larger valve. A double-acting cylinder needs two outlet lines, so specify the AirTAC 4V series instead. Note that this valve is rated for negative pressure down to -102.2 kPa, so vacuum circuits are well within its capability.
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