Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg 4 inch size

4 inch size

A manual reset hi-limit sensor is useful because it requires a deliberate reset after a high-limit event

A fresh handle can make an older valve feel substantially more serviceable again without the need for full valve replacement

An overlay is useful because it restores the visible button labels and surface appearance of the topside panel

Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg 4 inch sizeThe Hayward air relief O ring set is designed for compatible SwimClear and Pro Grid filter applications where the air relief assembly needs dependable sealing. O rings like these are useful because they help maintain a cleaner seal at the air relief point, supporting more reliable filter serviceability and operation. This quantity two replacement is especially useful when the original O rings are flattened, brittle, cracked, or leaking. Replacing them