working principle

The pilot valve is controlled by the water force, so that the main valve automatically discharges part of the water to stabilize the set pressure of the pipe before the valve. When the pressure returns below the set pressure, the main valve is automatically closed, and the pressure relief and holding pressure of the valve are within a certain range. You can adjust.

Characteristics

- Quick opening and closing - maintaining pipeline pressure.
- Slowly close - prevent water hammer.
- When the upstream pressure is higher than the set value, the main valve opens to relieve excess pressure from the upstream line.
- When the upstream pressure is lower than the set value, the main valve closes and maintains the upstream pressure.

product manual

The hydraulic control valve is generally divided into two types: diaphragm type and piston type. The company adopts a diaphragm type with a caliber of Φ600mm or less, and a piston type with a caliber of Φ600mm or more.
The hydraulic control valve is a combination of a main valve and an external needle valve, a sound guide valve, etc., and is transformed into a remote control float valve, a fixed water level valve, a pressure reducing valve, and a slow closing check valve in accordance with the purpose, function and location. , flow control valves, pressure relief valves, electric control valves and pump control valves. The main valve is composed of main parts such as valve body, diaphragm, valve stem assembly and valve seat.