slurry pumps only open the inlet valve , long run , what will happen ?

     By centrifugal procedures, when starting the outlet valve should be closed, the aim is to reduce the starting current to protect the motor . From this perspective , the motor sound . But not long after starting to open the outlet valve , the liquid temperature will rise, prone to cavitation, excessive vibration and damage the impeller and seal , is also detrimental to the smooth running of the motor .

    If AH is large flow of slurry or HH high lift pump , there should be a minimum flow control valve, this valve is usually open. If equipped with a reflux valve can not flow back into the inlet pipe to flow back to the tank inside . Press the stop button to prevent high-pressure pump reverse reflux after stopping the pump outlet valve must be closed . The check valve is usually considered unreliable cutting . Generally small slurry pump that allows the play closed a short time , but a long time will cause the pump vaporize , affecting looked ; If it is a high speed multi -stage centrifugal impeller slurry pump , it is absolutely not allowed to play closed, cause mechanical seal leakage or burst , causing mechanical failures and accidents. Slurry Pump manufacturers Heavenly Tip : Before starting such a pump outlet valve to open or minimum flow control valve ! There are two kinds of pumps vaporized general forms: gas cavitation tied ; cavitation will damage the impeller, the gas will cause the pump is not tied looked .

slurry pumps only open the inlet valve , long run , what will happen ?