Hydraulic Single Acting 12V DC Dump Trailer Pump. This power unit designed for medium and small lift platform, by the high pressure pump, ac motor, multi-purpose integrated block, hydraulic valve, fuel tanks and other components combined into one. Reduced lift platform controlled by electromagnetic unloading valve, falling speed is controlled by a bulit-in balancing valve. Back-up manual unlaoding valve is used to power down. It's widely used in stacker, samll and medium-sized lifting platform and various industrial fields. This unit comes standard in many dump trailers and It ...