The hydraulic power pump unit is the power source of the entire system, and is designed to provide enough power for valve opening and closing. The pump unit is equipped with two sets of identical pumps to back each other up, including a motor unit, electric control cabinet and other necessary hydraulic components, such as the hydraulic filter, overflow valve, discharge valve, pressure relay unit, pressure gauge, pressure sensor, and level meter. The electric control cabinet is equipped with an on/off switch, pump start/stop button and corresponding indicator lights, indicator lights and buzzers for high pressure alarm, low pressure alarm, low liquid level alarm and high pressure differential alarm.