CENTRIFUGAL PUMP OPERATION
Centrifugal Pump Operation Summary (Cont.)
Pump runout is the maximum flow that can be developed by a centrifugal pump
without damaging the pump.
The greater the head against which a centrifugal pump operates, the lower the flow
rate through the pump. The relationship between pump flow rate and head is
illustrated by the characteristic curve for the pump.
Centrifugal pumps are protected from dead-heading by providing a recirculation
from the pump discharge back to the supply source of the pump.
Centrifugal pumps are protected from runout by placing an orifice or throttle valve
immediately downstream of the pump discharge and through proper piping system