Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg A manual reset hi-limit sensor

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

4 inch size

This Waterway replacement is a strong choice when the goal is to preserve the original system style while renewing the core skimmer body in a matching white finish

The white deluxe scallop face also keeps the finished look crisp and polished

Four-function control modules are designed to manage multiple spa features from air-actuated user inputs

Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg A manual reset hi-limit sensorThe 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