Backwater Valves Are Designed As A Sewage Check Valve To Prevent Pumped Water From Flowing Back Into The Basin.
Backwater Valve plumbing assemblies include threaded cover to allow for access and valve flapper which seals closed while not in use. Made of durable PVC or ABS plastic, backwater valves can be solvent welded to piping and can accommodate access sleeves made of Schedule 40 pipe for long lasting reliability. Available sizes are 3, 4, and 6 inches. Package quantities are 1, 2, and 4.