Dual Flush™ Pro Reverse Flush Valves are tank and hose cleaners with a vacuum breaker
They allow you to fill your tank with water completely for thorough clean-ups
Forces water back up into plumbing lines to break up clogs in pipes. Allows you to backfill and flush black and gray water tanks, then reverse valve and flush sewer drain hose. Anti-Siphon valve and complete valve assembly included.