Hayward Hydrostatic Relief Valve - SP1056

Hayward Hydrostatic Relief Valve 1-1/2" - SP1056Features 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 For 1-1/2 and 2 inch pipe size