Hayward Manual Air Relief Assembly for SwimClear Cartridge Filters and ProGrid DE Filters | DEX2420MAR2

The Hayward Manual Air Relief Assembly (DEX2420MAR2) is the OEM replacement air relief valve assembly for Hayward SwimClear Multi-Element Cartridge Filters and ProGrid DE Filters.

This assembly allows trapped air to be manually purged from the filter tank before start-up and during routine maintenance. Releasing air from the tank ensures the filter operates at correct pressure and prevents air locks that can affect flow and filtration performance.

Specifications

Fits Into

Compatibility is based on Hayward parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Poolaroo Pro Tip

When replacing the air relief assembly, inspect the valve seat and any associated O-ring or washer for wear before reinstalling. Always bleed air from the filter tank with the pump off and system pressure fully relieved before removing or installing any air relief components.