Replaces the valve for your RV's black-water tank. 3" Diameter passage allows wastewater to travel freely when valve is open. Valve body, seals, nuts, and bolts included. Features: Replacement valve for your RV's black-water tank, 3" Diameter passage allows wastewater to travel freely when valve is open, Plastic handle, Valve body, seals, nuts, and bolts included Fits Bladex, Valterra, Bristol, and Anonda valves