{"product_id":"mueller-industries-ad15504-relief-valve","title":"Mueller Industries AD15504 Relief Valve","description":"\u003cp\u003eThe \u003cspan\u003e\u003cstrong\u003eMueller Industries\u003c\/strong\u003e \u003c\/span\u003e\u003cstrong\u003eAD15504 Relief Valve\u003c\/strong\u003e is a \u003cstrong\u003estraight-thru pressure relief valve\u003c\/strong\u003e engineered for critical overpressure protection in commercial refrigeration and industrial systems. With a \u003cstrong\u003efactory set pressure of 235 PSI\u003c\/strong\u003e, this \u003cspan\u003e\u003cstrong\u003eMueller Industries \u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003eSafetymaster valve\u003c\/strong\u003e features a \u003cstrong\u003e1\/2\" NPT inlet\u003c\/strong\u003e and a \u003cstrong\u003e5\/8\" flare outlet\u003c\/strong\u003e connection. Designed mainly for liquid receiver applications above the liquid refrigerant level, it ensures high-volume discharge capacities to protect your pressure vessels from catastrophic failure. This \u003cstrong\u003eHVACR pressure relief device\u003c\/strong\u003e is fully compatible with all \u003cstrong\u003eCFC, HCFC, and HFC refrigerants\u003c\/strong\u003e and oils, including R-410A. Built with a robust, corrosion-resistant brass body, the AD15504 operates within a \u003cstrong\u003econtinuous operating temperature\u003c\/strong\u003e range of -40°F to 300°F. It satisfies \u003cstrong\u003eASHRAE Standard 15\u003c\/strong\u003e code requirements and is certified by the National Board of Boiler and Pressure Vessel Inspectors, ensuring your system remains \u003cstrong\u003eASME code compliant\u003c\/strong\u003e during peak operation. For contractors, this is a tamper-evident, non-adjustable safety component with internal staking to prevent unauthorized field recalibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Refrigerant Compatibility:\u003c\/strong\u003e Fully operational with modern HFCs and legacy CFC\/HCFC refrigerants for versatile field application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode-Compliant Safety:\u003c\/strong\u003e Certified by the National Board (NB) and meets \u003cstrong\u003eASHRAE 15\u003c\/strong\u003e and \u003cstrong\u003eASME Section VIII\u003c\/strong\u003e standards for unfired pressure vessels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Resilience:\u003c\/strong\u003e Engineered to withstand extreme thermal conditions from -40°F up to 300°F without compromising seat integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Pressure Regulation:\u003c\/strong\u003e High-volume discharge capacity ensures rapid pressure equalization in emergency overpressure scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTamper-Resistant Construction:\u003c\/strong\u003e Internal components are staked into position to maintain factory \u003cstrong\u003e235 PSI settings\u003c\/strong\u003e and prevent field errors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the \u003cspan\u003eMueller Industries \u003c\/span\u003eAD15504 compatible with R-410A systems?\u003c\/strong\u003e\u003cbr\u003eYes, this \u003cstrong\u003erefrigeration safety valve\u003c\/strong\u003e is rated for use with high-pressure refrigerants including R-410A, provided the system's maximum design pressure aligns with the 235 PSI rating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere should this relief valve be installed on a receiver?\u003c\/strong\u003e\u003cbr\u003eTechnicians should install the \u003cstrong\u003estraight-thru relief valve\u003c\/strong\u003e in the vapor space of the liquid receiver, strictly above the liquid refrigerant level, to ensure proper vapor discharge during an overpressure event.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the pressure setting be adjusted in the field?\u003c\/strong\u003e\u003cbr\u003eNo. The \u003cspan\u003e\u003cstrong\u003eMueller Industries\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e AD15504\u003c\/strong\u003e features a fixed 235 PSI setting and is designed with tamper-evident internal staking. If a different pressure setting is required, the entire valve must be replaced with the correctly rated model.\u003c\/p\u003e\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Mueller Industries","offers":[{"title":"Default Title","offer_id":1671421755417,"sku":"AD15504","price":121.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_786d7cab-0a3d-4e12-9776-1caf1b8015b6.png?v=1792452071","url":"https:\/\/www.gsistore.com\/products\/mueller-industries-ad15504-relief-valve","provider":"GSIstore","version":"1.0","type":"link"}