Specification
| Function | 2 port 2 way, normally closed (energise to open) |
| Action | Direct acting — opens from zero differential pressure |
| Body material | Forged brass, nickel plated |
| Port size | G1/4" (DN8) |
| Orifice / Cv | 2.5 mm / Cv 0.23 |
| Diaphragm / seal | NBR standard — VITON (FKM) and EPDM optional |
| Media | Air, water, oil (neutral media) |
| Pressure range | 0 – 1.0 MPa working / 1.2 MPa proof |
| Media temperature | -5 to +80 °C (NBR) |
| Coil | Encapsulated, IP54, class B, continuous duty |
| Coil supply | DC12V / DC24V / AC110V / AC220V (±10%) — 22 VA (AC) / 17–18 W (DC) |
| Response / life | ≤ 0.05 s / 150,000 cycles |
| Dimensions / mounting | 40.5 × 75 mm; any angle, coil upright preferred |
Cross reference (functionally interchangeable)
| Brand | Part number |
|---|---|
| SMC | VX2120-02 |
| AirTAC | 2V025-08 / 2W-025-08 |
| Generic CN | 2W-025-08 |
Price tiers (FOB Shanghai, USD)
| Qty | Unit price |
|---|---|
| 1 – 9 | $12.00 |
| 10 – 99 | $9.80 |
| 100 + | $8.20 |
Commercial terms
- Not an OEM part. This is a functionally interchangeable aftermarket component.
- Sample order accepted from 5 pcs; mixed-model orders welcome (no MOQ wall).
- Lead time: 3 days in stock / 7 days for 500+ pcs.
- Warranty 12 months. Photos and test report before shipment on request.
- Also available in G1/8" to G2" (2W-025 to 2W-500), and in stainless steel (2S series) — tell us your size.
- Please confirm your existing nameplate photo or drawing before ordering — our engineer replies within 24 hours.


