The JD745X multi-function water pump control valve is an intelligent valve installed at the water pump outlet of the high-rise building water supply system and other water supply systems to prevent backflow, water hammer and water hammer. The valve has three functions of electric valve, check valve and water hammer eliminator, which can effectively improve the safety and reliability of the water supply system. The technical principle of slow opening, quick closing and slow closing to eliminate the water hammer is integrated to prevent the water hammer and the pump water hammer from being opened. Simply operate the pump motor to open and close the button, the valve can automatically open and close according to the pump operating rules, the flow is large, the pressure loss is small.
Multi-function pump control valve working principle
When the water pump is started, the water pressure acts on the lower part of the main valve disc and the lower chamber of the control room. This pressure causes the main valve to open, and the water in the upper chamber of the control chamber is slowly discharged to the outlet end through the regulating valve B, and the main valve is slowly opened. . Setting the opening of the regulating valve gives a suitable main valve opening speed. When the water pump stops working, the water pressure at the inlet end drops rapidly, and most of the opening degree is quickly closed under the action of self-weight and spring pressure, preventing the water from flowing back. The remaining opening degree is jointly caused by the water pressure in the upper chamber of the control chamber and the water pressure in the lower chamber. Slowly close, the closing speed slows down to form a buffer to prevent a surge in pressure. Setting the opening and opening ratio of the regulating valves A and B can obtain a suitable valve opening and closing speed.
Main technical parameters of multi-function water pump control valve