Hayward Check Valve, 1 1 2 in, Single, Inline True Union, Polypropylene, FNPT x FNPT TC30150T Length 34" NEMA frame: 48Y (5 3 4" body NEMA frame: 48Y (5 3 4" body dia multi staked stainless steel piano hinge that measures 3 16 of an inch in diameter and features an innovative square cut elastomer seat to seal at low back pressures Designed to help prevent the reversal of flow in piping systems where backflow could cause damage to filters
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