Yueidung Manual Air Relief Assembly for Hayward Pro Grid & SwimClear Filters — 2420MAR2 with Pressure Gauge, O-Ring & Teflon Tape

The Yueidung 2420MAR2 Manual Air Relief Assembly is a direct-fit replacement air-release kit for Hayward Pro Grid DE and SwimClear cartridge pool filters, bundled with a pressure gauge, O-ring, and Teflon tape for a complete install.

If your Hayward-compatible filter is trapping air or reading an inconsistent pressure, the Yueidung 2420MAR2 provides a robust manual vent assembly designed to restore reliable air purging and clear pressure feedback. Built to match common Hayward Pro Grid DE and SwimClear cartridge filter configurations, this assembly replaces worn or leaking valves and gives a straightforward, tool-free swap for most backyard and commercial pool systems.

How does this valve stop air from building up in my filter?

The manual relief assembly vents trapped air so the filter can operate at the correct hydraulic pressure. Open the valve slowly to let air escape until water appears, then close it to reestablish a sealed system.

• Manual orifice releases trapped air before normal circulation resumes
• Integrated pressure gauge shows when backwashing or servicing is needed
• Strong sealing reduces the chance of air re-entry or leaks

Will this fit my Hayward Pro Grid or SwimClear cartridge filter?

The 2420MAR2 is made to be compatible with Hayward Pro Grid DE filters and SwimClear cartridge models that use the same thread and valve footprint. It’s intended as a direct replacement for assemblies with the same layout and dimensions.

• Designed to match Hayward-style thread and port spacing
• Compact dimensions: approximately 5.51 inches long by 3.93 inches high
• Includes O-ring and Teflon tape to ensure a secure, leak-free connection

What materials and durability features does this replacement use?

Yueidung constructs the valve from reinforced, deformation-resistant plastics and sealing components engineered for long-term pool use. The part resists cracking under normal pool pressures and includes a snug O-ring to protect against leakage.

• High-quality plastic body resists wear and stress
• Precision-molded orifice and valve seat for quiet, reliable operation
• Supplied pressure gauge for ongoing pressure monitoring during service

How easy is it to install and maintain this relief assembly?

Installation is intentionally simple: remove the old assembly, clean mating surfaces, apply the included Teflon tape, seat the new O-ring, and thread the Yueidung valve in by hand. Routine maintenance is minimal—periodic lubrication of the O-ring and visual checks for wear are recommended.

• No specialized tools needed for most installs
• Package includes Teflon tape and O-ring for immediate replacement
• Recommended to lubricate the outer seal and clean debris before fitting

Who is this for: pool owners, maintenance professionals, and pool service technicians who need a reliable Hayward-compatible manual air relief assembly. It’s a practical replacement when your current valve leaks, your pressure gauge is unreliable, or air pockets are reducing your filter performance. The kit is useful for both residential and light-commercial pools using Hayward Pro Grid DE or SwimClear cartridge filters and for anyone wanting a quick, dependable repair without sourcing multiple parts separately.