12 L Hydraulic Power Unit, Double Acting Dump Trailer Pump, 22 MPa Max Relief Pressure & 3.4 L/min Flow Rate, DC 12V Hydraulic Pump with Metal Reservoir for Dump Trailer Car LiftingProduct Features Power You Can Feel This DC 12V, 1. 6 kW hydraulic power unit moves 0. 91 GPM with a 12 quart tank, 1620 MPa working pressure, and up to 3,200 psi, so heavy lift gear runs with steady, confident force Double Acting Precision This hydraulic pump controls both raise and lower for pinpoint moves while using less hydraulic oil. The built in relief valve auto vents over pressure, so failures drop and security steps up Easy to Install This