Two Speed Hydraulic Hand Pump

A 2 speed hydraulic hand pump switches from an initial low-pressure, high oil displacement stage to a low-displacement, high-pressure stage. When used with a hydraulic cylinder, this means the greater oil flow in the first stage moves the cylinder plunger a longer distance with each stroke.A two-stage hydraulic pump uses two pumps to generate high and low liquid flow rates and high and low pressure without requiring higher power consumption. A low-pressure, high-rate inlet valve and a high-pressure, low-flow rate outlet valve allow the pump to generate higher oil pressure at a lower or higher flow.