Jsyfcfc Flex Air Relief Assembly DEX2400CR — Replacement for Vertical D.E. Filters DE2420–DE7220, PA/EPDM

The Jsyfcfc DEX2400CR Flex Air Relief Assembly is a direct-fit replacement kit that restores safe venting and reliable pressure relief for Vertical D.E. filter models DE2420, DE3620, DE4820, DE6020 and DE7220.

If your diatomaceous earth (D.E.) pool filter has a worn or cracked air relief assembly, this Jsyfcfc DEX2400CR kit provides a compatible replacement made from durable PA and EPDM materials for improved elasticity, corrosion resistance and heat tolerance. The part is sold as a single kit and is intended to match the original function: letting trapped air escape from the filter head while maintaining a secure seal during operation. Confirm model compatibility before purchasing to ensure a straightforward swap.

How does the DEX2400CR restore my filter’s performance?

Replacing a failing air relief assembly removes air pockets that compromise flow and filtration. The DEX2400CR re-establishes controlled venting so the filter can purge air and maintain consistent pressure.

• Replaces worn or cracked flex relief components to eliminate leaks.
• Helps maintain steady pressure readings and pump efficiency.
• Designed to mate with vertical D.E. filter heads specified in the compatibility list.

Is installation difficult for someone doing basic pool maintenance?

Installation is intentionally simple: remove the old flex air relief assembly and press the new DEX2400CR kit into place. No special tools or adhesives are usually required, making it suitable for routine DIY maintenance.

• Tool-free swap in most cases—pull out the old unit and push in the replacement.
• Inspect sealing surfaces and clean mating areas before installation.
• Check for proper seating and test under low pressure before normal operation.

What materials and benefits does this replacement part offer?

The DEX2400CR combines PA (polyamide) and EPDM elastomer to improve longevity where the original part can fail. These materials resist aging, handle elevated temperatures, and tolerate exposure to pool chemistry better than older rubber-only designs.

• PA body adds dimensional stability and impact resistance.
• EPDM sealing elements deliver elasticity and chemical resistance.
• Constructed to reduce cracking and deformation over time.

Will this kit work with my specific filter model?

The DEX2400CR is manufactured to be compatible with several vertical D.E. filter models: DE2420, DE3620, DE4820, DE6020 and DE7220. Always verify your filter model number and compare the existing part before ordering to ensure a correct match.

• Compatible models listed on the product page—confirm your model number first.
• Sold as a single kit (Flex Air Relief Assembly *1 Kit).
• Designed for direct replacement of the original flex assembly.

Who is this for: Pool owners, service technicians and maintenance professionals who need a dependable, OEM-compatible replacement air relief assembly for vertical D.E. filters. If you want a robust part that resists aging and performs like the original component—sold as a single kit and simple to install—the Jsyfcfc DEX2400CR is aimed at anyone performing routine filter upkeep or restoring an older filter to reliable operation.