Pump Flow Control Valve

This valve is installed at the outlet of the water pump, which can limit the water flow of the water pump and stabilize the head of the water pump. It can make the water pump work in the high-efficiency area, and prevent the overload of the low-head high-flow water pump from burning the motor

1. Support pump working point in high-efficiency area;
2. Limited water pump flow, low efficiency when running;
3. When the pump is slowly closed and stopped, there is no water hammer;
4. Prevent overloading of the water pump and oversetting current from burning the motor.

When all the parallel pumps are working, the pump head is greater than the control pressure difference of the guide valve, the guide valve is closed, and the main valve can reach the maximum opening degree. When it is necessary to change the flow rate and reduce the number of running stations, the flow rate of the pump still in operation increases, and the head is smaller than the control pressure difference of the guide valve, when the guide valve opens, the pressure of the main valve control room increases, the main valve closes, the flow rate of the pump decreases, and the head increases accordingly. When reaching the balance state, the pump head is the control pressure difference of the pilot valve. Due to the operation of other pumps, the main valve is closed after the check valve is closed to prevent the backflow of water.

This valve is generally sized according to pipe diameter and system designers should propose to control the head or flow; The 1/2 "pipe joint on the pilot valve shall be installed at the inlet of the water pump. For specific use, please consult ZECO Valve Group.