The 3-Way Metered Release Valve DC Unit - Manual Controls from Buyers Products is an all-in-one, compact power pack. It's ideal for any power up/gravity down hydraulic application such as a plow, dump body or lift gate. This power unit provides quick-response functionality and a rugged build designed to withstand weather and tough work sites. It includes a built-in pump, 12V motor, polymer reservoir, suction filter, and manual handle controls. A solenoid-actuated, externally mounted release valve has built-in metering for finer control of lowering speed. It's built to withstand weather and tough work demands.