The 2W family provides brass 2/2 electrical on/off fluid control. Use the model-specific tables to match orifice, port, medium and operating pressure; confirm the seal and coil for the required temperature and duty before ordering.
2W - 160 - 15 - NO - V - Z - AC220V - ZG - 2W: two-position two-way direct acting solenoid valve
- 2WH: high-pressure direct acting type
- 2WD: low-pressure high-flow direct acting type
- 025: 2.5mm
- 040: 4.0mm
- 160: 16mm
- 250: 25mm
- 400: 40mm
- 500: 50mm
- 08: 1/4 in
- 10: 3/8 in
- 15: 1/2 in
- 25: 1 in
- 50: 2 in
- Blank: normally closed
- NO: normally open
- Blank: NBR
- E: EPDM
- V: VITON
- SI: silicone
- DC12V
- DC24V
- AC24V 50Hz/60Hz
- AC110V 50Hz/60Hz
- AC220V 50Hz/60Hz
- AC380V 50Hz/60Hz
- G thread
- ZG thread
- NPT thread
Choose by model, medium and pressure differential
The catalog distinguishes compact 2W, 2WH and 2WD models from larger-port 2W models. Compare the exact row for the required medium and flow. Port size and orifice are different specifications; provide both where known.
Check materials and the operating sequence
Confirm compatibility of the brass body and selected seal with the fluid and cleaning conditions. State normally closed or normally open action, cycle frequency and the required state after power loss. Stainless steel requirements need a separate model review.
Use the model-specific catalog evidence
Download the product PDF and send the proposed ordering code. A curve or temperature entry for one variant does not establish suitability of every 2W model; confirm any steam or special-media duty separately.
Prepare a complete 2W RFQ
Send medium and concentration, normal and maximum temperature, inlet/outlet pressure, flow, port and thread standard, voltage, seal requirement, operating sequence and quantity. Include a nameplate or installation drawing for replacements.
| Parameter | Value |
|---|---|
| Medium | Air, water, oil and gas by model |
| Body material | Brass |
| Action | Direct acting |
| Valve type | Two-position two-way, normally closed by default; normally open options on selected models |
| Seal options | NBR, EPDM, VITON and silicone |
| Viscosity note | Catalog lists 20 CST or below for 2W large-port models |
| Voltage tolerance | +/-10% |
| Common voltage options | DC12V, DC24V, AC24V, AC110V, AC220V, AC380V |
Compact 2W model specification reference
| Item | 2W025-06/08 | 2W040-10 | 2WH012-06/08 | 2WH020-10 | 2WD040-06/08 | 2WD050-10 |
|---|---|---|---|---|---|---|
| Medium | Air, water, oil, gas | Air, water, oil, gas | Air, water, oil, gas | Air, water, oil, gas | Air, water, oil, gas | Air, water, oil, gas |
| Action | Direct acting | Direct acting | Direct acting | Direct acting | Direct acting | Direct acting |
| Valve type | Normally closed | Normally closed | Normally closed | Normally closed | Normally closed | Normally closed |
| Orifice | 2.5mm | 4mm | 1.2mm | 2mm | 4mm | 5mm |
| CV | 0.23 | 0.60 | 0.05 | 0.15 | 0.50 | 0.7 |
| Port | 1/8 in / 1/4 in | 3/8 in | 1/8 in / 1/4 in | 3/8 in | 1/8 in / 1/4 in | 3/8 in |
| Pressure range | 0-1.0MPa | 0-1.0MPa | 0-2.0MPa | 0-2.0MPa | 0-0.7MPa | 0-0.8MPa |
Large-port 2W model reference
| Model | Orifice | CV | Port | Catalog pressure notes |
|---|---|---|---|---|
| 2W160-10 | 16mm | 4.8 | 3/8 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W160-15 | 16mm | 4.8 | 1/2 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W200-20 | 20mm | 7.6 | 3/4 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W250-25 | 25mm | 12 | 1 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W350-35 | 35mm | 24 | 1 1/4 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W400-40 | 40mm | 29 | 1 1/2 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W500-50 | 50mm | 48 | 2 in | Air 0-1.0MPa; water 0-0.7MPa; oil 0-0.9MPa |
| 2W600-65 | 60mm | 70 | 2 1/2 in | Air 0-0.8MPa; water 0-0.6MPa |
| 2W600-80 | 60mm | 70 | 3 in | Air 0-0.8MPa; water 0-0.6MPa |
| 2W800-100 | 80mm | 85 | 4 in | Air 0-0.8MPa; water 0-0.6MPa |
Compact 2W exterior dimensions
| Model | A | B | C | D | K |
|---|---|---|---|---|---|
| 2W025-06 | 66 | 30 | 75 | 42 | 1/8 in |
| 2W025-08 | 66 | 30 | 75 | 42 | 1/4 in |
| 2W040-10 | 73 | 32 | 84 | 55 | 3/8 in |
| 2WH012-06 | 66 | 30 | 75 | 42 | 1/8 in |
| 2WH012-08 | 66 | 30 | 75 | 42 | 1/4 in |
| 2WH020-10 | 73 | 32 | 84 | 55 | 3/8 in |
| 2WD040-06 | 66 | 30 | 75 | 42 | 1/8 in |
| 2WD040-08 | 66 | 30 | 75 | 42 | 1/4 in |
| 2WD050-10 | 73 | 32 | 84 | 55 | 3/8 in |
Frequently Asked Questions
- FAQ What information helps Kailing quote a 2W solenoid valve faster?
Send the model or port size, medium, working pressure, pressure differential, voltage, seal material, normally open or normally closed requirement, quantity and destination. - FAQ Can one 2W model be used for air, water and oil?
The catalog lists air, water, oil and gas as media, but pressure range and seal material must be confirmed for the exact medium and temperature. - FAQ When should buyers choose 2WH or 2WD instead of standard 2W?
Use 2WH when the catalog high-pressure type is required, and 2WD when a low-pressure high-flow type is needed. - FAQ Is the pipe size enough to select a 2W valve?
No. Confirm orifice, required flow, minimum and maximum pressure differential, medium, temperature, seal and coil as well as the pipe connection.
Need a quotation?
Send the model, medium, pressure, port size, body material and quantity for review.