Airtac 3V2 Solenoid Valve 3V206NOCI
The AirTAC Airtac 3V2 Solenoid Valve 3V206NOCI 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 voltageAC110V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.18
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V206NOCI
Few small 3/2 valves switch vacuum as well as pressure; the AirTAC 3V206NOCI is rated from -102.2 kPa to 0.1 MPa, so the same normally open valve can interrupt a vacuum line or a compressed-air line on one machine. It is direct-acting with a coaxial poppet and spring return, and its AC110V coil arrives on a pre-wired flying lead for direct connection to a control panel.
Normally open means the outlet is fed the moment supply air (or vacuum) is applied; energising the solenoid closes the path and vents the line. Flow at the PT1/8 port is Cv 0.18, 3.2 mm2 effective area per port, with 7 VA coil draw on AC.
Airtac 3V2 Solenoid Valve 3V206NOCI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V206NOCI |
|---|---|
| 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 | AC110V |
|---|---|
| Electrical entry | Flying lead (lead-out wire 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 3V206NOCI
| 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. |
| AC110V | 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 3V2 Solenoid Valve 3V206NOCI Is Used
Lab vacuum manifold switching
The -102.2 kPa to 0.1 MPa rating lets a laboratory manifold switch vacuum lines and compressed air with one valve type.
Carousel indexer release
A single-acting indexer pin on a rotary carousel stays fed while the coil is off and exhausts when the AC110V solenoid cuts the path.
Trailer brake test rig
Flying leads suit a hand-wired test bench, where the valve cycles vacuum and pressure lines on trailer brake components.
Is the Airtac 3V2 Solenoid Valve 3V206NOCI the Right Part?
Size down to the 3V1 when the duty is light and coil power counts (3.0 W on DC24V against 7 VA here), or to the 3V2M where a multi-station manifold matters more than flow - its base routing holds Cv to 0.1. For much higher flow, the 3V3 (1/4in, Cv 0.62, vacuum-rated) is the move; stepping to a 1/4in 3V208 only lifts Cv to 0.19.
Order around five decisions: 1/8in port, PT thread standard (G and NPT on request), normally open state, AC110V coil with flying-lead entry, and whether vacuum is part of the duty. Moving a double-acting cylinder? Use the 5-port 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 3V206NOCI FAQ
Flow per port is Cv 0.18 with a 3.2 mm2 effective area at 1/8in (1/4in 3V208: Cv 0.19, 3.4 mm2). Pressure spans 0-0.8 MPa and vacuum duty is rated -102.2 kPa to 0.1 MPa. Operating temperature is -20 to 70 C, AC coils draw 7 VA and DC coils 7.0 W, and the body meets IP65 (DIN 40050).
Decide what the outlet should do with the coil off. Normally open (this model) passes supply air or vacuum to the line immediately and closes when energised; normally closed keeps the outlet vented until switched. Pick NO for default-flow duties like blow lines or held clamps, NC for fail-closed isolation. Both are ordering options on the same 3V2 body.
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