Hayward HPPDEX2420MAR2 -H Manual Air Relief Assembly

The Hayward DEX2420MAR2 Manual Air Relief Assembly is a genuine Hayward replacement part designed to help safely release trapped air from compatible pool filter systems. Installed at the top of select Hayward DE and cartridge filters, this assembly allows the filter tank to be manually vented during startup, servicing, and normal maintenance. By helping remove built-up air from the filter, the DEX2420MAR2 supports proper circulation, consistent filtration performance, and safer pressure management. It is commonly used with Hayward Pro-Grid DE filters and SwimClear cartridge filters as a replacement for older manual air relief assemblies. Ideal For This Hayward manual air relief assembly is ideal for pool owners or service professionals replacing a worn, leaking, cracked, or non-functioning air relief valve assembly on a compatible Hayward filter. Best suited for: Hayward Pro-Grid vertical grid DE filters Hayward SwimClear cartridge filters Compatible Hayward DE and cartridge filter systems Replacing older DEX2420MAR-style assemblies Restoring proper manual air venting at the filter Pool service repairs and filter maintenance

Features

• Genuine Hayward Replacement Part
• The DEX2420MAR2 is an original Hayward replacement assembly, built to match the fit and function required for compatible Hayward filter systems. Using a genuine part helps maintain proper sealing, pressure relief operation, and filter performance.
• Manual Air Relief Function
• This assembly allows users to manually release trapped air from the filter tank, helping the system prime properly and reducing air accumulation inside the filter during operation.
• Helps Support Proper Filter Pressure
• Trapped air inside a filter can affect water flow and pressure readings. This air relief assembly helps vent excess air so the filter can operate more efficiently and more consistently.
• Common Replacement for DE and Cartridge Filters
• The DEX2420MAR2 is commonly used on compatible Hayward Pro-Grid DE filters and SwimClear cartridge filters, making it a frequently needed repair part for residential pool equipment systems.
• Updated Replacement Assembly
• This part is commonly listed as the updated revision for older DEX2420MAR assemblies and is used as a replacement on compatible filters that originally used the previous version.
• Top-Mounted Filter Installation
• The assembly installs at the top of the filter tank where air collects, allowing air to be released before and during system operation according to Hayward’s safety instructions.

Specifications

Fitment

Confirm the complete manufacturer part number HPPDEX2420MAR2 -H and brand Hayward against your equipment model and the original component before purchase.

Frequently Asked Questions

What is the manufacturer part number?

The MPN is HPPDEX2420MAR2 -H from Hayward.

How should I confirm fitment?

Match MPN HPPDEX2420MAR2 -H to your equipment manual or the label on the part being replaced. Confirm size, voltage, plumbing connections, and application before ordering.

Is professional installation required?

Follow the manufacturer instructions. Electrical, gas, and pressurized plumbing work should be performed by a qualified technician when required by local code.