Airtac 3V2 Solenoid Valve 3V206NCBI
The AirTAC Airtac 3V2 Solenoid Valve 3V206NCBI 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 closed
- Port size1/8 in
- Coil voltageDC24V
- Electrical entryFlying lead (lead-out wire type)
- Flow (Cv)0.18
- Series3V2
About the Airtac 3V2 Solenoid Valve 3V206NCBI
Rated from -102.2 kPa to 0.1 MPa, the 3V206NCBI is the 3/2 valve for circuits that switch vacuum as well as pressure - a duty the 3V1 and 3V2M cannot cover. The coil runs on DC24V at 7.0 W and arrives as a flying-lead version, wired directly into the panel rather than seated on a DIN socket.
The function is direct-acting 3/2 with spring return and a coaxial poppet; this normally closed example keeps the PT1/8 outlet vented until energised. Flow on the 1/8in port is an effective area of 3.2 mm2, Cv 0.18, and the valve operates across -20 to 70 C.
Airtac 3V2 Solenoid Valve 3V206NCBI Technical Specifications
| Model | Airtac 3V2 Solenoid Valve 3V206NCBI |
|---|---|
| Series | 3V2 |
| Valve type | 3/2-way (3-port, 2-position) |
| Function | Direct-acting, single solenoid, spring return |
| Initial state | Normally closed |
| 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 3V206NCBI
| 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. |
| NC | Normally closed: no air at the outlet 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 3V206NCBI Is Used
Vacuum carton handling above a conveyor
Energising the valve applies up to -102.2 kPa to the suction cups that lift cartons onto the belt; de-energising vents the line so the carton drops clean.
Vacuum chuck switching on an electronics bench
The 24 V flying lead ties into the bench controller, holding PCBs on the chuck under vacuum and releasing them with one signal.
Air-assisted jig lock on a mobile assembly cart
Battery-driven 24 V systems favour the 7.0 W coil, and the normally closed state means the jig locks open or closed only while powered.
Is the Airtac 3V2 Solenoid Valve 3V206NCBI the Right Part?
Settle five choices first: 1/8in port with PT thread as standard (G and NPT threads are available to order), normally closed initial state, DC24V coil, flying-lead entry, and whether vacuum forms part of the duty - here it does, with the -102.2 kPa rating. Then size up or down: the 3V1 cuts coil draw to 3.0 W on the same DC24V for tiny duties; the 3V2M wins on manifold density but passes only Cv 0.1 through its base; the 1/4in 3V3 lifts flow to Cv 0.62 and keeps the vacuum rating, which is the right step when 0.18 restricts the cycle. A double-acting cylinder is a 5-port job - 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 3V206NCBI FAQ
Quote the working envelope in one line: 0-0.8 MPa pressure, -102.2 kPa to 0.1 MPa vacuum rating, -20 to 70 C. Flow coefficients are 3.2 mm2 / Cv 0.18 on the 1/8in port and 3.4 mm2 / Cv 0.19 on the 1/4in port. Coils take 7 VA (AC) or 7.0 W (DC), and the coil housing meets IP65 to DIN 40050. Filter the air supply to 40 um or finer.
It feeds or vents one line, so it suits single-acting spring-return cylinders, clamping points, on/off air blow, vacuum switching to -102.2 kPa and pilot duty on a larger valve. It cannot drive a double-acting cylinder - that needs two outlet lines from a 5-port valve, which is the AirTAC 4V series. For anything beyond these duties, confirm the detail from the datasheet via RFQ.
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