3 Valves compact oil change electronic system for fixed boat installations. Conceived for oil fill and drain operations for all on-board uses like generators, engines, transmissions and catwalks. The electronic control adjusts the speed of the pump according to oil viscosity/temperature and increases its speed during priming. Automatically shuts off in case of empty tank, short circuit and after 30 minutes of operation. Indicated for a perfect cleaning of all on-board areas while avoiding leaks and dispersions on the boat floor. Easy to operate and carry.