Ningbo Brando Hardware Co., Ltd
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UW Series 1'' Inch UW-25 2W250-25 Direct Acting Solenoid Valve
Technical Data of 2W & 2S Solenoid Valve:
| 2W Series | 2W025-08 | 2W040-10 | 2W160-15 | 2W200-20 | 2W250-25 | 2W350-35 | 2W400-40 | 2W500-50 |
| 2S Series | 2S025-08 | 2S040-10 | 2S160-15 | 2S200-20 | 2S250-25 | 2S350-35 | 2S400-40 | 2S500-50 |
| Orifice Size | 2.5 | 4 | 15 | 20 | 25 | 35 | 40 | 50 |
| Port Size | 1/4'' | 3/8'' | 1/2'' | 3/4'' | 1'' | 1-1/4'' | 1-1/2'' | 2'' |
| Medium | Water, Air, Gas, Oil | |||||||
| Action | Direct Acting | Semi-Direct Diaphragm Operated | ||||||
| Function | 2 Way, Normally Closed | |||||||
| Fluid Viscosity | 20 CST below | |||||||
| Pressure Range | 0 to 1.0 Mpa | |||||||
| Temp. Range | -5 to +85℃ | |||||||
Main dimension of 2W & 2S Series Solenoid Valves:
| 2S Series | 2W Series | A | B | C | D | E |
| 2S025-06 | 2W025-06 | 64.5 | 30 | 75 | 43 | 1/8'' |
| 2S025-08 | 2W025-08 | 64.5 | 30 | 75 | 43 | 1/4'' |
| 2S040-10 | 2W040-10 | 70.6 | 32 | 82.4 | 53 | 3/8'' |
| 2S160-10 | 2W160-10 | 101.5 | 57 | 117 | 69 | 3/8'' |
| 2S160-15 | 2W160-15 | 101.5 | 57 | 117 | 69 | 1/2'' |
| 2S200-20 | 2W200-20 | 107 | 57 | 123.5 | 73 | 3/4'' |
| 2S250-25 | 2W250-25 | 111.5 | 73.5 | 134.5 | 99 | 1'' |
| 2S350-35 | 2W350-35 | 142 | 95 | 172 | 123 | 1-1/4'' |
| 2S400-40 | 2W400-40 | 142 | 95 | 172 | 123 | 1-1/2'' |
| 2S500-50 | 2W500-50 | 172 | 123 | 209 | 168 | 2'' |
2/2 Pilot Operated Diaphragm Solenoid Valve : Normally Closed
To open:
when the valve receives an electrical signal, a magnetic field is formed which attracts the plunger covering the pilot orifice to lift off, causing system pressure (holding the diaphragm/piston closed) to drop.
As system pressure on the top of the diaphragm/piston is reduced, full system pressure on the other side of the diaphragm/piston acts to lift the diaphragm/piston away from the main orifice, which allows media flow through the valve.
Since the bleed orifice is dimensionally smaller than the pilot orifice, the system pressure can t rebuild on the top of the diaphragm/piston as long as the pilot orifice remains open.
Pilot Operated Diaphragm Solenoid Valve Symbol
To close:
when the valve is de-energized, it releases its hold on the plunger. Then the plunger drops and covers the main orifice.
The system pressure builds up on the top of the diaphragm/piston through the bleed orifice, forcing the diaphragm/piston down until it covers the main orifice and stops media flow through the valve
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