Barker 24140 Auto Drain – 1-1/2″

Just push a switch to dump your RV’s black and gray water tank. Barker’s Auto-Drain mounts directly to a 3″ or 1.5″ conventional waste valve and requires no adjustments or difficult clamps to install. Each Auto-Drain comes complete with a mounting bracket, rocker arm switch, switch box with light (indicates open or closed valve), complete installation and operating instructions.