{"product_id":"lochinvar-a-o-smith-100274785-valve","title":"Lochinvar \u0026 A.O. Smith 100274785 Valve","description":"\u003cp\u003eThe \u003cstrong\u003eLochinvar \u0026amp; A.O. Smith 100274785 Pressure Relief Valve\u003c\/strong\u003e is a critical \u003cstrong\u003eOEM replacement part\u003c\/strong\u003e engineered for high-capacity commercial boilers and water heating systems. Featuring a robust \u003cstrong\u003e1-1\/2\" x 2\" connection\u003c\/strong\u003e size and a factory-set \u003cstrong\u003e50 PSI pressure rating\u003c\/strong\u003e, this valve provides essential overpressure protection for heavy-duty hydronic applications. With a massive \u003cstrong\u003erelief capacity of 4,237,000 BTU\/hr\u003c\/strong\u003e, it is designed to meet strict ASME safety standards, ensuring precise discharge rates and preventing catastrophic equipment failure. This component serves as the direct \u003cstrong\u003ecross-reference for part 0383792\u003c\/strong\u003e, offering a seamless fit for technicians maintaining Lochinvar and A.O. Smith industrial units. Built for durability in demanding environments, this \u003cstrong\u003eASME safety relief valve\u003c\/strong\u003e maintains system integrity by automatically venting excess pressure, making it the professional choice for ensuring code-compliant operation and long-term boiler performance in large-scale mechanical rooms.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Benefits for Contractors\u003c\/h3\u003e\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDirect OEM Match:\u003c\/strong\u003e Provides an exact drop-in replacement for part number \u003cstrong\u003e100274785\u003c\/strong\u003e and the older \u003cstrong\u003e0383792\u003c\/strong\u003e, eliminating field modification needs.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh Discharge Capacity:\u003c\/strong\u003e Rated for \u003cstrong\u003e4,237,000 BTU\u003c\/strong\u003e, making it suitable for high-output \u003cstrong\u003ecommercial boiler safety\u003c\/strong\u003e requirements.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePrecision Set Point:\u003c\/strong\u003e Calibrated to \u003cstrong\u003e50 PSI\u003c\/strong\u003e to ensure reliable opening and closing cycles under extreme thermal expansion.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Engineered to withstand the rigors of industrial water heating environments without premature seat leakage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 100274785 valve compatible with other brands?\u003c\/strong\u003e\u003cbr\u003e\nWhile primarily used in \u003cstrong\u003eLochinvar and A.O. Smith boilers\u003c\/strong\u003e, this valve is compatible with any system requiring a \u003cstrong\u003e1-1\/2 inch x 2 inch relief valve\u003c\/strong\u003e rated for 50 PSI and meeting the specified BTU capacity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and part 0383792?\u003c\/strong\u003e\u003cbr\u003e\nPart \u003cstrong\u003e100274785\u003c\/strong\u003e is the official updated OEM number and acts as a direct replacement for the legacy part number 0383792.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen should this pressure relief valve be replaced?\u003c\/strong\u003e\u003cbr\u003e\nTechnicians should inspect the valve for leaks or mineral buildup at the seat. If the valve fails to reseat after testing or shows signs of corrosion, an immediate OEM replacement is necessary to maintain system safety.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\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":"Lochinvar \u0026 A.O. Smith","offers":[{"title":"Default Title","offer_id":35654368268,"sku":"100274785","price":1101.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_d1faac13-9f8d-4564-92f5-d22c204bacb9.png?v=1767460015","url":"https:\/\/www.gsistore.com\/en-ca\/products\/lochinvar-a-o-smith-100274785-valve","provider":"GSIstore","version":"1.0","type":"link"}