Description: difference between the instant value of pressure and the static pressure; Name: pressure of sound
Description: measured dfifference between instantaneous pressure and static pressure; Name: sound pressure
Description: measure of the increase in the liquid to be pumped, water, on a pipe connected vertically to the pump when the flow rate is zero. related to the operation of the pump at 1,450 rpm with the current impeller size; Name: pump shut-off head for actual impeller diameter at 1450/min