Airtac 3V2 Solenoid Valve 3V206NOBI
The AirTAC Airtac 3V2 Solenoid Valve 3V206NOBI 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 voltageDC24V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.18
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V206NOBI
On the 3V206NOBI the electrical connection is a pre-wired flying lead instead of a DIN socket, so the coil can be run straight to a junction box or controller output where a plug socket will not fit. Functionally it is a normally open 3/2 direct-acting valve: air passes from supply to outlet at rest, and energising the coil closes it and vents the downstream line.
The coaxial poppet, spring-return design is rated 0-0.8 MPa and down to -102.2 kPa for vacuum service. At the 1/8in port size the flow coefficient is Cv 0.18 (3.2 mm2 effective area) per port, and the DC24V coil consumes 7.0 W.
Airtac 3V2 Solenoid Valve 3V206NOBI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V206NOBI |
|---|---|
| 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 | DC24V |
|---|---|
| Electrical entry | Flying lead (lead-out wire 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.
Model Code: Airtac 3V2 Solenoid Valve 3V206NOBI
| 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. |
| DC24V | 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 3V206NOBI Is Used
Vacuum cup sheet lifter
The -102.2 kPa vacuum rating lets this NO valve hold a vacuum line open to suction cups on a sheet-lifting gantry and shut it under PLC control.
Robot end-of-arm ejector
A flying lead suits the constant flexing at a robot wrist, feeding a small single-acting cylinder that kicks finished parts off the fixture.
Packaging line air knife
Air flows to an air knife on a conveyor as soon as the line is supplied; energising the coil stops the blow during changeover.
Is the Airtac 3V2 Solenoid Valve 3V206NOBI the Right Part?
This 1/8in body is the right size when Cv 0.18 per port is enough; there is little to gain from stepping to 1/4in, since the 3V208 lifts the coefficient only to Cv 0.19 - a real jump requires the 3V3 (1/4in, Cv 0.62, vacuum-rated). Go smaller with the 3V1 when low coil power matters (3.0 W on DC24V), or to the 3V2M manifold version when many stations must share one base and Cv 0.1 per station is acceptable.
Check the five-point match before ordering: port 1/8in with PT threads standard (G and NPT available to order), normally open state, DC24V, flying-lead entry, and vacuum involvement in the duty. Double-acting cylinder control belongs to 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 3V206NOBI FAQ
Per-port flow is 3.2 mm2 effective area, Cv 0.18 at 1/8in; the 1/4in 3V208 body rises to 3.4 mm2 and Cv 0.19. Pressure range is 0-0.8 MPa and vacuum service is rated -102.2 kPa to 0.1 MPa. It works from -20 to 70 C with air filtered to 40 um or finer, the DC24V coil takes 7.0 W (AC coils 7 VA) and the rating is IP65 (DIN 40050).
No. A 3/2 valve has three ports and two states, so it either feeds a line or vents it - that covers single-acting spring-return cylinders, blow, clamps, vacuum switching and pilot duty. A double-acting cylinder needs two outlet lines simultaneously, which calls for a 5-port valve such as the AirTAC 4V series.
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