Electric motorized waste valve system for recreational vehicles. Modular, Patent pending design accepts either 1-1/2" or 3" Valves to accommodate both Grey and Black RV Water tanks. Motodrain's compact design supports installations in limited space environments. 3 Position switch fully opens or closes the valve and also allows toggling when a gradual release of the tanks is preferred. Single indicator switch features RED light when valve is open to alert RV end user and prevent messy accidents. Easy to engage, single pin bypass feature provides for manual operation of valve in case of RV battery or electrical system failure. Motodrain's weather resistant Sealed Linear Actuator resists water, dirt, dust and grime to provide years of reliability and dependable service. All mounting hardware included. Designed, Molded & Assembled in the USA.