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Manufacturer part number: R221016
This cover regulates water flow while preventing direct access to the suction line
It is often identified when returns surge with air and the filter will not stabilize normally after startup
It provides a protective seal and keeps debris out of the top mechanism
Its modular design supports long-term serviceability by allowing selective replacement of worn parts
Pentair Filter Hub Assembly, 3" | 154016Z Maytronics Manufacturer part number: R221016What This Part Is Used For The Pentair 154016Z Hub Assembly 3in is used within select Pentair sand filter systems to connect and support internal lateral components. It directs water evenly through the filter media during filtration and backwash cycles. Why This Part Matters A cracked or worn hub can cause channeling inside the sand bed, reducing filtration efficiency. It may also allow sand to return to the pool if internal connections fail.
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