Hayward Hydrostatic Relief Valve, 1-1/2", White | SP1056 Ladder Parts inspect the pump lid O-ring

inspect the pump lid O-ring for cracking or deformation and replace it at the same time to prevent air leaks at the lid seal

Works overnight

fits filters manufactured after 5-85 Pentair TR Series TR100C TR100C only

pH sensors have a finite service life — electrode degradation causes calibration drift over time even when the sensor appears physically intact

Hayward Hydrostatic Relief Valve, 1-1/2", White | SP1056 Ladder Parts inspect the pump lid O-ringHayward Hydrostatic Relief Valve 1 1 2" SP1056 For 1 1 2 and 2 inch pipe size Features and Benefits: Helps prevent pool damage due to external hydrostatic pressure beneath the pool shell when pool is drained Valve should be replaced whenever the pool is drained White ABS, spring loaded, leakproof self cleaning o ring seal Noncorrosive and nonconductive