pump valve

Briefly Analyz The State of Pump Outlet Valve Under normal circumstances, starting the centrifugal pump, according to the specification should first fill the pump chamber with media, close the outlet valve, and then open the pump, the purpose is: on the one hand to prevent the starting current is too large damage to the motor; On the other hand, prevent the instantaneous loss of pressure after starting the pump, resulting in pump cavitation. But many problems cannot be generalized! For low flow and low head pumps, closing or not closing the outlet valve is not a problem. For large pumps, the outlet is often slightly opened, in order to prevent the pressure difference between the front and back of the valve after starting, and the outlet valve is not easy to start, so slightly open the outlet valve opening. Some centrifugal pumps will open the outlet valve slightly due to […]