Hydraulic pumps deliver high-pressure fluid flow to the pump outlet. Powered by mechanical energy sources, the hydraulic pumps make use of gears, vanes, pistons and various other devices to pressurize fluid. When they are powered by pressurized fluid, the pumps rotate in a reverse direction and act as a motor.
Hydraulic pumps have applications in all types of low and high-pressure
testing and oilfield uses such as removing cores from core barrels and
testing valves, fittings. They are simple to construct and operate and
are quite flexible with excellent performance.