Description
2420MAR2 Manual Air Relief Assembly — Hayward Pool Filter Replacement
The iFJF 2420MAR2 Manual Air Relief Assembly is a direct replacement for worn or leaking air relief valves on Hayward Pro-Grid DE filters and SwimClear cartridge filters. This essential component allows you to safely bleed trapped air from your filter tank, preventing dangerous pressure buildup and ensuring optimal filtration efficiency.
Key Features
-
Direct OEM Replacement: Designed to replace Hayward 2420MAR2 and compatible models
-
Safe Air Bleeding: Prevents pressure buildup by allowing controlled release of trapped air
-
Durable Construction: High-quality materials resist pool chemical degradation and UV exposure
-
Easy Installation: Thread-in design — no special tools required
-
Essential Safety Component: Never operate your pool filter without a functioning air relief valve
Compatibility
| Filter Series |
Type |
| Hayward Pro-Grid DE Filters |
DE (Diatomaceous Earth) |
| Hayward SwimClear Cartridge Filters |
Cartridge |
| Hayward SwimClear Multi-Element |
Cartridge |
Replaces Part Numbers
- Hayward 2420MAR2
- Hayward DEX2420MAR2
- CX2420MAR2
Technical Specifications
| Specification |
Detail |
| Part Number |
2420MAR2 |
| Type |
Manual Air Relief Assembly |
| Application |
Pool & Spa Filter Tank |
| Installation |
Thread-In (Hand Tighten + 1/4 Turn) |
Why Replace Your Air Relief Valve?
-
Safety First: A stuck or leaking air relief valve can cause dangerous pressure buildup
-
Prevent Leaks: Old valves often develop slow drips that waste water and chemicals
-
Proper Priming: Bleeding air after filter cleaning is essential for proper pump priming and flow
-
Easy DIY Fix: This is one of the easiest pool filter repairs — no plumber needed
Frequently Asked Questions
Q: Will this fit my Hayward DE filter?
A: Yes, this assembly is compatible with most Hayward Pro-Grid DE filters and SwimClear cartridge filters that use the 2420MAR2 air relief assembly.
Q: Do I need Teflon tape for installation?
A: Yes, we recommend 2-3 wraps of Teflon tape on the threads for a leak-free seal. Do not overtighten.
Q: How do I know if my air relief valve needs replacement?
A: Signs include: water leaking from the valve when closed, difficulty turning the knob, or air hissing when the valve is supposed to be sealed.
Q: Does this come with the O-ring?
A: Yes, the assembly includes the integrated O-ring seal.
Q: My filter model isn't listed — will this work?
A: If your current air relief has the same thread size and is listed as 2420MAR2 compatible, it should fit. Compare your old part to the product photos.
