The 3-Way Valve DC Power Unit - Electric Controls from Buyers Products is an all-in-one, compact power pack. Its large 8 GPM, 3 function dump valve and power up/gravity down hydraulic application make it ideal for dump applications. You get quick-response functionality at your fingertips from one small package. The unit contains a built-in pump, 12V motor, steel reservoir, suction filter, and push-button control station.