Airtac 3V2 Solenoid Valve 3V208NOEI
The AirTAC Airtac 3V2 Solenoid Valve 3V208NOEI is a genuine 3-port 2-position (3/2) solenoid valve with 1/4 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 size1/4 in
- Coil voltageAC24V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.19
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V208NOEI
What separates the 3V208NOEI from its DIN-plug sibling is the electrical entry: the AC24V coil ends in a factory-fitted flying lead, so the installer crimps or lands the wires directly instead of seating a plug connector. In cramped cabinets or behind guards that saves real commissioning time.
Functionally it is a normally open, direct-acting 3/2 valve on 1/4in PT ports: air flows while the coil is off, and energising the single solenoid closes the path against the spring return. Flow per port is Cv 0.19 / 3.4 mm2 effective area, and the coaxial poppet keeps the seal tight across the full 0-0.8 MPa range as well as in vacuum service down to -102.2 kPa. Genuine AirTAC construction throughout; full option codes are on the datasheet.
Airtac 3V2 Solenoid Valve 3V208NOEI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V208NOEI |
|---|---|
| Series | 3V2 |
| Valve type | 3/2-way (3-port, 2-position) |
| Function | Direct-acting, single solenoid, spring return |
| Initial state | Normally open |
| Port size | 1/4 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 0.19 (3.4 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 3V208NOEI
| 3V2 | Body — sets the flow, the coil power and whether vacuum is rated. |
|---|---|
| 1/4 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 3V208NOEI Is Used
CNC router sheet hold-down
A normally open valve keeps vacuum reaching the hold-down cups on a wood-router table by default and only breaks the circuit when the controller commands it - the AC24V flying lead lands directly in the machine's junction box.
Fail-extended clamp on a crate stacker
On a bottling-hall crate stacker the single-acting clamp arm stays extended (fed) while power is off; energising the coil vents the cylinder and the spring retracts it for safe access.
Washdown-zone wiring
In a dairy washdown cell the pre-wired lead-out runs through conduit to a sealed junction box away from spray, avoiding an exposed DIN socket on the valve body.
Is the Airtac 3V2 Solenoid Valve 3V208NOEI the Right Part?
Confirm five points at order time: 1/4in port (PT standard, G or NPT to order), normally open state, AC24V voltage, flying-lead entry, vacuum duty or not. Sizing alternatives: for a small, low-power task the 3V1 draws 3.0 W on DC24V versus 7.0 W here; for dense multi-station manifolds the 3V2M trades flow for footprint (Cv 0.1, roughly half of what an individually ported 3V2 passes); for substantially more flow choose the 3V3 at Cv 0.62, which is vacuum rated too. Double-acting cylinders are a job for the 5-port AirTAC 4V range, not this 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 3V208NOEI FAQ
Yes. Per-port flow is Cv 0.19 with a 3.4 mm2 effective area on this 1/4in body (the 1/8in 3V206 is Cv 0.18 / 3.2 mm2). It operates from 0 to 0.8 MPa and is also rated for vacuum, -102.2 kPa to 0.1 MPa. Temperature limits are -20 to 70 C, the AC coil takes 7 VA and the DC coil 7.0 W, sealing is to IP65 (DIN 40050), and filtered air of 40 um or better is required.
It is. The 3V2 body carries a negative-pressure rating of -102.2 kPa to 0.1 MPa, so it can open, close or vent vacuum circuits such as suction cups and hold-down tables. That rating belongs to the 3V2 - the 3V1 and 3V2M bodies are not vacuum capable. Exact vacuum flow depends on your pump and plumbing; check the datasheet or send an RFQ.
Authorized Export Seller
Genuine AirTAC parts produced by the AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac 3V2 Solenoid Valve 3V208NOEI
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.