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Waterway Plastics offers durable pool components designed for professional install and reliable service
and approved burner compatibility
Intended Use: For FMCP Series pump configurations
It helps maintain clean pool water during regular operation
Hayward Hydrostatic Relief Valve, 1-1/2" | SP1056 Pool Lifts Waterway Plastics offers durable poolWhat This Part Is Used For The SP1056 hydrostatic relief valve is a 1 1 2 inch valve used in compatible Hayward pool floor installations. It allows groundwater pressure to equalize beneath the pool shell. Why This Part Matters Hydrostatic pressure can cause structural stress if not relieved. A failed valve can allow unwanted water intrusion or prevent proper pressure equalization. Maintaining a functional valve supports pool shell integrity. Key
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