Description: smallest flow rate at which the pump can operate without exceeding the noise and vibration limits specified in the order; Name: Min perm stable flow rate
Description: Lowest flow at which the pump can operate without exceeding the noise and vibration limits imposed in the order ; Name: Minimum allowable stable flow
Description: head observed at outlet area of the installation, corresponding to the sum of the height, pressure head and velocity head; Name: total head at outlet area of the installation