Hayward Check Valve for StarClear Cartridge and Perflex DE Filters | ECX4077B1 C4335 These swimming pool cover pumps

These swimming pool cover pumps are designed for use on above-ground or inground pool covers

This is everything you need to close your already stable* pool for winter

✓ Concentrated power: 1 fl oz treats up to 500 gallons

No shocking necessary

Hayward Check Valve for StarClear Cartridge and Perflex DE Filters | ECX4077B1 C4335 These swimming pool cover pumpsThe Hayward Check Valve (ECX4077B1) is the OEM replacement check valve for select StarClear cartridge filters and Perflex Extended Cycle DE filters. This check valve is installed within the internal plumbing of the compatible filter tank assembly, maintaining the one way flow path specified by Hayward for these filter models. It is sized and configured specifically for the StarClear and Perflex DE filter housings listed below it is not a universal or