Airtac 3V2 Solenoid Valve 3V206NOEI
The AirTAC Airtac 3V2 Solenoid Valve 3V206NOEI 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 voltageAC24V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.18
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V206NOEI
Specify the AirTAC 3V206NOEI when you want the normally open 3/2 function pre-wired: the I suffix replaces the DIN socket with a flying lead-out, so the coil arrives with its cable already attached. The valve is normally open on a PT1/8 port and runs on AC24V at 7 VA.
Inside, a spring-return direct-acting coaxial poppet gives positive sealing with Cv 0.18 and 3.2 mm2 effective area per port. The body also carries the 3V2 family vacuum rating of -102.2 kPa to 0.1 MPa, a capability the smaller 3V1 and the manifold-type 3V2M do not offer.
Airtac 3V2 Solenoid Valve 3V206NOEI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V206NOEI |
|---|---|
| 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 | AC24V |
|---|---|
| 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 3V206NOEI
| 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. |
| AC24V | 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 3V206NOEI Is Used
Valve wiring looms on a rotary filler
A carousel filling machine mounts many valves under a rotating deck; flying leads terminate straight into the slip-ring loom, avoiding bulky DIN connectors at each station.
Vacuum hold-down on a CNC router bed
The normally open valve keeps vacuum applied to the spoilboard while de-energised, so sheet material stays clamped through a control-power interruption.
Clamp circuits on a robot weld fixture
AC24V solenoids on weld fixtures hold pneumatic clamps closed through dips in control power, because the normally open state keeps air flowing to the clamp cylinders.
Is the Airtac 3V2 Solenoid Valve 3V206NOEI the Right Part?
The flying lead saves space where there is no room to seat a DIN connector, but plan cable routing and strain relief at design stage. Compare sizes both ways: below it sit 3V1 for low-power small duties (3.0 W on DC24V) and 3V2M (Cv 0.1) for multi-station manifolds; above it sits 3V3 (1/4in, Cv 0.62, also vacuum-rated) when flow is short. Before ordering, fix five things: port size and thread (1/8in, PT standard, G/NPT to order), normally open state, AC24V coil, lead-out entry, and any vacuum requirement. A double-acting cylinder needs the AirTAC 4V series, not this 3/2 valve.
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 3V206NOEI FAQ
3V206 (PT1/8): effective area 3.2 mm2, Cv 0.18. 3V208 (PT1/4): effective area 3.4 mm2, Cv 0.19. Pressure range 0-0.8 MPa, plus a negative-pressure rating of -102.2 kPa to 0.1 MPa. Temperature -20 to 70 C. Coil power 7 VA on AC, 7.0 W on DC. Ingress protection IP65 (DIN 40050). Air must be filtered to 40 um or finer.
Three ports and two states mean it either feeds one line or vents it to exhaust. That covers single-acting spring-return cylinders, air blow nozzles, pneumatic clamps, vacuum switching and piloting a larger valve. It cannot reverse a double-acting cylinder - that takes a 5-port valve such as the AirTAC 4V series.
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