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240-volt single-element heater (8
Typically installed during major Perflex rebuilds or when bump action fails
Fuel Type: Natural Gas (can be converted to propane)
Using the proper cartridge size is critical for performance
linear profile provides visual definition along the front of the unit
Hayward Manual Air Relief Assembly | DEX2420MAR2 Pool Filter Cartridges 240-volt single-element heater (8What This Part Is Used For The Hayward DEX2420MAR2 Manual Air Relief Assembly vents trapped air from compatible Hayward DE2420 filter tanks. It allows safe pressure release during operation and maintenance. Why This Part Matters A faulty air relief assembly can cause pressure fluctuations and trapped air inside the tank. Replacing it restores proper venting and safe filter operation. This helps maintain steady filtration performance. Key Features and