4WEH series solenoid pilot operated directional valves are solenoid pilot operated spool type valves. This series are used to control the start, stop and direction of flow. 4WH series hydraulic operated directional valves can be used to change the direction of hydraulic oil by moving the main spool when the valve receives a hydraulic signal from the pilot hydraulic oil.
Ordering Code:
Technical Specification:Hydraulic specification: | Max. Operating Pressure (P, A, B port) | H-WEH25 type | WEH25 type |
| 35 | 28 |
| T port | Oil Outer discharge control (MPa) | 25 | 25 |
| Oil inner discharge control (MPa) | DC:21 | AC:16 |
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| Y Port | Oil outer discharge control (MPa) | DC: 21 | AC: 16 |
| Min. control pressure | Oil inner supply control (MPa) | Spring reset 3 position valve: 1.3
Spring reset 2 position valve: 1.3
Hydraulic reset 3 position valve: 1.8
Hydraulic reset 2 position valve: 0.8
Spool function valve symbol C, Z, F, G, H, P, S, T, V and big flow rate: 0.45 |
| Max.control pressure (MPa) | 25 |
| Liquid medium | mineral oil, phosphate oil |
| Oil Temperature range (ºC) | -30 to +80 (nitrile rubber seal)
-20 to +80( fluororubber seal) |
| Oil viscosity range (mm2)/s | 2.8-500 |
| Max. oil volume of reversing |
| Spring reset 3 position valve(cm3) | 14.2 |
| 2 position valve(cm3) | 28.4 |
| Hydraulic reset 3 position valve |
| position 0 to position a (cm3) | 7.15 |
| position a to position 0 (cm3) | 7.0 |
| position a to position b (cm3) | 14.5 |
| position b to position 0 (cm3) | 5.73 |
| Pilot control pressure(MPa) | 5 | 15 | 25 |
| AC | DC | AC | DC | AC | DC |
| Spring reset 3 position valve(ms) | 50 | 85 | 40 | 75 | 30 | 65 |
| Spring reset 2 position valve(ms) | 120 | 160 | 100 | 130 | 70 | 105 |
| Hydraulic reset valve( ms) | a | b | a | b | a | b | a | b | a | b | a | b |
| 30 | 35 | 55 | 65 | 30 | 35 | 55 | 65 | 25 | 30 | 50 | 60 |
| Spring reset 3 position valve(ms) | 40 |
| Spring reset 2 position valve(ms) | 120 | 125 | 95 | 100 | 75 | 80 |
| Hydraulic reset 3 position valve(ms) | a | b | a | b | a | b | a | b | a | b | a | b |
| 30 | 35 | 30 | 35 | 30 | 35 | 30 | 35 | 30 | 35 | 30 | 35 |
| Mounting position | Horizontal mounting for C, D, K, Z, Y type hydraulic reset valve, any position for other else |
| flow rate of short time reversing(l/m) | about 35 |
| Weight of total valve (kg) | about 18 |
| Votage type | DC | AC |
| Votage | 12, 24, 48, 96, 110,220 | 110, 220 |
| Rated power (W) | 30 |
|
| Absorbed Power (W) |
| 36 |
| Starting voltage |
| 220 |
| Operating state | continuous operation |
| Surrounding Temp range (ºC) | +50 |
| Coil Temp. range(ºC) | + 150 |
| IP grade | IP65 |
Ningbo Histar Hydraulic Co., Ltd. is a professional hydraulic valves manufacturer and exporter. Our factory was established in 2005, with years of development, now it covers an area of 10000 square meters, with 250 skilled workers. The annual production capacity reaches 0.5 million pieces. It is located in Ningbo, the second biggest seaport in China, the transportation is very convenient.
The products include directional valves, proportional valves, pressure valves, modular valves, safety valves, which are widely used in the fields of metallurgy, petrol mine, engineering, architecture, mold, chemical, mechanical tool, traffic and so on. The products have been exported to Europe, Middle East, East Asia, South East Asia, Australia, and gained good reputation due to reliable quality and competitive prices.
We persist in "customer satisfaction" as our core value. With many dedicated technicians and advanced equipments, we can provide customers with high quality products and meet their different requirements. Our products are CE approved, and we have passed ISO9001: 2000 quality system.
Cooperate with us, you will find that we are your right choice!
