{"product_id":"lochinvar-a-o-smith-100380600-gas-valve","title":"Lochinvar \u0026 A.O. Smith 100380600 Gas Valve","description":"\u003cp\u003eMaintain peak combustion performance in high-efficiency systems with the \u003cstrong\u003eLochinvar \u0026amp; A.O. Smith 100380600 Gas Valve Coupling\u003c\/strong\u003e. Engineered as a direct OEM replacement for the \u003cstrong\u003eLochinvar CD\/CC120 Cadet\u003c\/strong\u003e series, this assembly is a critical component for technicians addressing ignition failure or pressure offset issues. Unlike generic alternatives, the \u003cstrong\u003e100380600\u003c\/strong\u003e is an integrated \u003cstrong\u003efan assembly with venturi and gasket\u003c\/strong\u003e, precision-matched to the negative pressure requirements of the \u003cstrong\u003eLochinvar Cadet\u003c\/strong\u003e blower system. It serves as the official superseding part for the older \u003cstrong\u003e100171983\u003c\/strong\u003e, ensuring full compatibility with factory control boards and gas train configurations. By providing a sealed interface between the gas valve and the burner, it prevents hazardous flue gas leakage and stabilizes the air-fuel mixture across the boiler’s modulation range. Professional installation ensures the \u003cstrong\u003eventuri gasket\u003c\/strong\u003e maintains its integrity under high-thermal stress, preventing common \u003cstrong\u003eHVAC gas valve leaks\u003c\/strong\u003e and flame rectification faults in \u003cstrong\u003eA.O. Smith\u003c\/strong\u003e and \u003cstrong\u003eLochinvar\u003c\/strong\u003e commercial or residential boilers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits for Technicians:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLochinvar 100380600 compatibility\u003c\/strong\u003e: Purpose-built for \u003cstrong\u003eCD\/CC120\u003c\/strong\u003e models to ensure exact \u003cstrong\u003eOEM gas valve assembly\u003c\/strong\u003e fitment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComplete Repair Solution\u003c\/strong\u003e: Includes the blower fan, calibrated venturi, and high-temp gasket to eliminate the need for piecemealing individual seals.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eImproved Combustion Stability\u003c\/strong\u003e: Restores the precise \u003cstrong\u003eventuri air-gas mixing\u003c\/strong\u003e necessary for a 94% AFUE rating and \u003cstrong\u003elow-NOx operation\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect Cross-Reference\u003c\/strong\u003e: Officially replaces the legacy \u003cstrong\u003eLochinvar 100171983\u003c\/strong\u003e part number for seamless inventory management.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePressure Integrity\u003c\/strong\u003e: Engineered to withstand the specific negative pressure suction of \u003cstrong\u003eLochinvar Cadet\u003c\/strong\u003e blower-driven systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this assembly include the coupling from the venturi to the gas valve?\u003c\/strong\u003e\u003cbr\u003e\nYes, the \u003cstrong\u003e100380600\u003c\/strong\u003e is supplied as a complete fan assembly including the \u003cstrong\u003eventuri and gasket\u003c\/strong\u003e. Technicians should verify the condition of the rubber coupling (MSC20274) during installation, though the primary sealing surfaces are included in this kit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this on a Lochinvar CD 100 model?\u003c\/strong\u003e\u003cbr\u003e\nNo, this specific assembly is optimized for the \u003cstrong\u003eCD\/CC 120\u003c\/strong\u003e models. While the configurations look similar, the internal venturi porting is specific to the 120 MBh input rating to maintain correct CO2 levels.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat are the symptoms of a failing gas valve coupling?\u003c\/strong\u003e\u003cbr\u003e\nCommon signs include \"Ignition Fault\" or \"Flame Failure\" codes on the digital display, often caused by a compromised \u003cstrong\u003efan gasket\u003c\/strong\u003e or restricted \u003cstrong\u003eventuri assembly\u003c\/strong\u003e preventing the gas valve from opening under the correct negative pressure.\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":42294939746482,"sku":"100380600","price":786.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/ac-parts-1000x1000_60ee4315-7792-4141-9781-ffe9f4452114.webp?v=1771894900","url":"https:\/\/www.gsistore.com\/products\/lochinvar-a-o-smith-100380600-gas-valve","provider":"GSIstore","version":"1.0","type":"link"}