Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg Compression nuts are useful because

Compression nuts are useful because they help secure related tubing and feeder fittings

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

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

Supports cleaner and more dependable through-wall plumbing connection

Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg Compression nuts are useful becauseThe 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