Pump Discharge Pressure
PDP = NP + FL +/ - EL
Maximum Hose Pressures
Service Test - 300 psi
Maximum Operating - 275 psi
Maximum 5 nonlocking 150 psi
Maximum 5 locking - 185 psi
Pressure on a confined system with no water flowing.
Pressure shown on compound gauge while water is being discharged.
Pressure of water remaining in main with water flowing or at the intake of the pump with water being discharged.
FL is a measure of the amount of energy used up by the movement of water through a hose line.
Head of Elevation
HE or E is a measure of the height to which water must or may be raised or,vice versa, the height of water available to supply energy to overcome resistance.
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