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Unfortunately Barker Valterra-Bristol Model Auto Drain is not listed by RangeFinders.You can also explore other items in the Hunting Gear, Hydration System yourself to try and find the perfect replacement for you!
Auto-Drain provides completely automatic 12-volt push button operation of the valves that dump your RV's grey and black water holding tanks. It mounts onto the slide valve of a 3" or 1.5" conventional waste valve and no plumbing modifications or difficult clamps are required. Works with Valterra and Bristol 3" and 1.5" waste valve models (not included). Auto-Drain Valves are made of corrosion-resistant steel, aluminum and plastic. Before installing, your holding tanks should be emptied. There is an open or close cycle in less than 4 seconds for the 3" models. Included with the Auto-Drain Valve is a mounting bracket, rocker arm switch, switch box with light (indicates open or closed valve) and complete installation and operating instructions.