Description: Pressure at the outlet of the safety valve with the valve closed; Name: Safety valve back pressure
Description: pressure at the outlet of the relief valve when the valve is closed; Name: relief-valve back 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 2,900 rpm with maximum impeller size; Name: pump shut-off head for maximum impeller diameter at 2900/min