Oatey 43905 ABS Backwater Valve, 3", Black Door Pulls Great for marine use above

Great for marine use above the water line

but they can be a little bulky and awkward to look at-in the driveway is fine

Automatically controls the operation of a 2-speed evaporative cooler up to 1HP

Covers 400 to 600 sq ft per gallon

Oatey 43905 ABS Backwater Valve, 3", Black Door Pulls Great for marine use aboveOatey Backwater Valves are designed as a sewage check valve to prevent pumped water from flowing back into the basin. Assembly includes threaded cover to allow for access and valve flapper which seals closed while not in use. Made of PVC or ABS plastic, backwater valve can be solvent welded to piping. Oatey Backwater Valves can accommodate access sleeves made of Schedule 40 pipe. Highlights: Material: ABS Plastic Color: Black Size: 3" Protects low