{"product_id":"aquatonics-manual-air-relief-valve-assembly-dex2420mar2-pressure-gauge-o-rings-tool-free-install","title":"Aquatonics Manual Air Relief Valve Assembly DEX2420MAR2 — Pressure Gauge, O‑Rings, Tool‑Free Install","description":"\u003cb\u003eThe Aquatonics DEX2420MAR2 Manual Air Relief Valve Assembly is a direct-replacement air-relief assembly with an upgraded pressure gauge and O-rings, designed to restore proper filter pressure and expel trapped air for clearer pool water.\u003c\/b\u003e\n\n\u003cp\u003eIf your pool filter is showing high pressure or air pockets, swapping in a reliable relief assembly can bring water flow back to normal and help you know when to service the media. The Aquatonics DEX2420MAR2 is built from corrosion-resistant materials, includes a better pressure gauge and all necessary seals, and fits many popular DE and cartridge filter models from Hayward, SwimClear and DEP. Installation is straightforward and tool-free, so routine maintenance is fast and inexpensive.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this valve improve my filter's performance?\u003c\/h3\u003e\n\u003cp\u003eThe replacement assembly vents trapped air that can form above filter media and block water pathways. Removing that air lowers pressure spikes, restores steady flow, and reduces stress on the filter housing and pump. The upgraded gauge also gives clearer pressure readings so you can time cleanings more effectively.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExpels trapped air to eliminate flow restrictions.\u003c\/li\u003e\n  \u003cli\u003eReduces sudden pressure increases that cause wear.\u003c\/li\u003e\n  \u003cli\u003eGauge visually informs when backwash or cleaning is needed.\u003c\/li\u003e\n  \u003cli\u003eSealed construction prevents leaks after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich filters and part numbers does this replace?\u003c\/h3\u003e\n\u003cp\u003eThe Aquatonics DEX2420MAR2 is compatible with Hayward Pro Grid DE models (DE2420–DE7220), SwimClear cartridge and SwimClear series models, and DEP 500 series units. It directly replaces multiple OEM part numbers for a seamless swap without modification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Hayward Pro Grid DE2420, DE3620, DE4820, DE6020, DE7220.\u003c\/li\u003e\n  \u003cli\u003eCompatible with SwimClear C-series cartridge and SwimClear DE models.\u003c\/li\u003e\n  \u003cli\u003eReplaces DEX2420MAR, HAY-051-2420, HPPDEX2420MAR2, and 17-150-1308.\u003c\/li\u003e\n  \u003cli\u003eIncludes O-rings and gaskets for immediate installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what do I need?\u003c\/h3\u003e\n\u003cp\u003eInstallation is designed to be quick and tool-free. You simply remove the old valve assembly, clean the mounting area, lubricate the supplied O-rings, and insert the new assembly until it seats securely. Most homeowners can complete the change in minutes without a technician.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo special tools or adhesives required.\u003c\/li\u003e\n  \u003cli\u003eLubricate included O-rings for proper sealing.\u003c\/li\u003e\n  \u003cli\u003eHand-tighten until the assembly is snug and centered.\u003c\/li\u003e\n  \u003cli\u003eTest system pressure after restart to confirm seal and gauge operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and features ensure long-term reliability?\u003c\/h3\u003e\n\u003cp\u003eThe DEX2420MAR2 uses corrosion-resistant components and improved sealing to withstand pool chemicals and outdoor exposure. The upgraded pressure gauge is engineered for clear, repeatable readings and the assembly includes replacement gaskets to prevent leaks over time. Built for durability, it reduces the need for frequent replacements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSturdy, corrosion-resistant construction for longevity.\u003c\/li\u003e\n  \u003cli\u003eImproved pressure gauge for accurate monitoring.\u003c\/li\u003e\n  \u003cli\u003eIncluded O-rings and gaskets for leak-free installation.\u003c\/li\u003e\n  \u003cli\u003eDesigned as a direct OEM-style replacement for reliable fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Pool owners and maintenance professionals using Hayward Pro Grid DE, SwimClear cartridge or DEP 500 series filters who want a fast, reliable way to remove trapped air, restore correct filter pressure and get clearer water without complicated repairs. It’s ideal for anyone seeking a cost-effective replacement part that installs quickly and offers long-term corrosion resistance and dependable gauge feedback.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the DEX2420MAR2 compatible with my Hayward DE2420 filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Aquatonics DEX2420MAR2 is a direct replacement for Hayward DE2420 and other Pro Grid models listed in the product description.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need any tools to install the replacement assembly?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools are needed—clean the mounting area, lubricate the included O-rings, and press the new assembly into place by hand.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Aquatonics","offers":[{"title":"Default Title","offer_id":56823764418900,"sku":"B0FTYZX694","price":64.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/aquatonics-front-assembly.jpg?v=1786978065","url":"https:\/\/gardenluxe.co.uk\/products\/aquatonics-manual-air-relief-valve-assembly-dex2420mar2-pressure-gauge-o-rings-tool-free-install","provider":"Gardenluxe Uk","version":"1.0","type":"link"}