Airtac 3V2 Solenoid Valve 3V206NOA
The AirTAC Airtac 3V2 Solenoid Valve 3V206NOA 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 open
- Port size1/8 in
- Coil voltageAC220V
- Electrical entryDIN plug (DIN socket type)
- Flow (Cv)0.18
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V206NOA
3V206NOA is a normally open 3/2 solenoid valve on a PT1/8 body. Its spring holds the supply-to-outlet path open, so air passes to the cylinder or blow line as soon as pressure is applied; energising the AC220V coil vents the outlet. That power-to-vent logic suits fail-open feeds, purge lines and vents that must close on power.
The valve is direct-acting with a coaxial poppet, giving a clean shift with no pilot stage. Flow at the 1/8in port is Cv 0.18 (3.2 mm2), the coil draws 7 VA, and the body handles -102.2 kPa to 0.1 MPa, so vacuum lines are in scope too. Quote supplied for the genuine AirTAC article.
Airtac 3V2 Solenoid Valve 3V206NOA Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V206NOA |
|---|---|
| Series | 3V2 |
| Valve type | 3/2-way (3-port, 2-position) |
| Function | Direct-acting, single solenoid, spring return |
| Initial state | Normally open |
| 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 3V206NOA
| 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. |
| NO | Normally open: air passes 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 3V206NOA Is Used
Fail-open purge lines
A purge or cooling-air feed on an oven conveyor must keep flowing if control power drops; the NO valve passes air on its spring and only vents when the AC220V coil is energised.
Vacuum release on packaging
A tray-sealing machine releases formed packs by breaking vacuum: energising the coil vents the line, while the -102.2 kPa rating covers the negative side of the cycle.
Pilot signal switching
As a pilot stage the valve feeds a larger process valve continuously and dumps the pilot signal on command, with the 7 VA coil suiting standard 220V control panels.
Is the Airtac 3V2 Solenoid Valve 3V206NOA the Right Part?
Match on five points: 1/8in PT thread (G or NPT on request), normally open initial state, AC220V coil at 7 VA, DIN plug entry, and any vacuum duty. Choose NC instead if the outlet must be dead at rest. For low-draw duties 3V1 needs only 3.0 W on DC24V but is not vacuum-rated; for panel-dense multi-valve builds 3V2M trades flow (Cv 0.1) for a compact shared base.
Keep this valve when individually ported Cv 0.18 flow or the vacuum rating is the requirement, and step to 3V3 (1/4in, Cv 0.62, also vacuum-rated) when the orifice must grow. A double-acting cylinder needs 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 3V206NOA FAQ
1/8in port with 3.2 mm2 effective area and Cv 0.18 (the 1/4in 3V208 body: 3.4 mm2, Cv 0.19); pressure 0-0.8 MPa; vacuum rating -102.2 kPa to 0.1 MPa; temperature -20 to 70 C; coil power 7 VA on AC or 7.0 W on DC; protection class IP65. Air should be filtered to 40 um or finer; lubrication is not required.
Pick NO when air must reach the outlet while the valve is de-energised - fail-open feeds, purge and cooling lines, or vents that close on power. Pick NC when the outlet must stay vented until the coil energises. Both states are simply different order codes in the same 3V2 family.
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