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Pentair BioShield Flow Switch with Connector 523458 Quad DE Filters Ensures balanced water distribution for Ensures balanced water distribution for efficient filtration Step 3: Align the Pentair White AutoFill Lid (T10W) over the AutoFill system opening and ensure it fits securely The Pentair 523458 Flow Switch with Connector is engineered for compatible BioShield UV systems and helps ensure safe system operation by verifying water flow before the UV lamp is energized This OEM replacement monitors water flow through the UV chamber and allows the system to operate only when adequate circulation is present
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