Hydraulic control valve concept and working principle

1, the concept of hydraulic control valve: hydraulic control valve is a water pressure control valve, which consists of a main valve and attached to the catheter guide valve needle valve and pressure gauges and other components. 2, the type of hydraulic control valve: According to the purpose of use? Function and place can be evolved into a remote control float valve? Pressure reducing valve? Slow closure check valve? Flow control valve? Relief valve? Hydraulic electric control valve, pump control valve Wait. According to the structure can be divided into two types of diaphragm and piston type 3, hydraulic control valve diaphragm type and piston type two types of valve works the same, are the pressure difference between the upstream and downstream △ P as the driving force, controlled by the pilot valve, the diaphragm Piston) Hydraulic differential operation, fully hydraulically adjusted so that the main valve disc fully open or fully closed or in regulation. When the pressure water entering the control chamber above the diaphragm (piston) is vented to the atmosphere or downstream low pressure zone, the pressure acting on the bottom of the valve disk and under the diaphragm is greater than the pressure above, pushing the main valve disk fully open (Piston) above the control chamber pressure water rotor pump can not be discharged to the atmosphere or the downstream low-pressure zone, the pressure acting on the diaphragm (piston) is greater than the pressure value below, so the main valve When the pressure value in the control chamber above the diaphragm (piston) is between the inlet pressure and the outlet pressure, the main valve disc is in the regulated state and the adjustment position depends on the needle valve in the catheter system and Adjustable pilot valve joint control. Adjustable pilot valve through the downstream outlet pressure and with its changes to open or close its own small valve port, thereby changing the diaphragm (piston) above the control room pressure value, control valve plate valve position adjustment. More Keyword Search: Control Valve