I was given a 1200 RPM Hawk H600 pump (7GPM 3000 PSI) Specs says 13.9 HP required. I don't know if that is electric motor HP or gas motor HP. Seems a bit too little HP to me for a gas engine, but I don't know. Anyone here know?
Because different types of prime movers vary in their pumping performance capabilities, the horsepower required to achieve a given output depends on the energy source.
Hydraulic power is more efficient than either electric power or internal combustion.
Various requirements may be calculated using these relationships:
Hydraulic horsepower required = Pressure x Flow / 1714
Brake horsepower (electric) required = Pressure x Flow / 1457
Gas engine horsepower required = Pressure x Flow / 1100*
*Base on this formula you would need 19-20 HP Gas engine..