{"product_id":"sv9520h8042-honeywell-natural-gas-smartvalve-control-for-hot-surface-ignition-systems","title":"SV9520H8042 | Honeywell Natural Gas SmartValve Control for Hot-Surface Ignition Systems","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Honeywell SV9520H8042 is a natural gas SmartValve™ control designed for low‑voltage operation (typically 24 VAC). It regulates gas flow into the combustion chamber while maintaining consistent pressure and incorporating a manual shut‑off for added safety. Ideal for use in hot‑surface‑ignition HVAC systems, it ensures reliable ignition performance.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGas Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSV9520H8042\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSmartValve Natural Gas Control Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural Gas (convertible to LP with kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VAC control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e½″ NPT inlet and outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRegulator Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSlow-opening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIgnition Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHot-surface ignition systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiagnostic LED\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — system status indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 LB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eSV9520H8042\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp data-start=\"268\" data-end=\"990\"\u003eThe SV9520H8042 is part of Honeywell’s SmartValve™ series, combining gas flow control, pressure regulation, and ignition sequencing in one unit. Built with a ½″ NPT inlet\/outlet and a slow‑opening regulator, it’s compatible with a wide range of furnaces, boilers, and rooftop heating applications. It operates on low‑voltage control from the system transformer and integrates diagnostics such as LED indicators for system status. \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCommonly used as a direct OEM replacement for Lennox\/Armstrong\/Ducane part numbers 28M95, 28M9501, and 20430701.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"992\" data-end=\"1011\"\u003e\u003cstrong data-start=\"992\" data-end=\"1009\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBrand \u0026amp; Part Number: Honeywell SV9520H8042 — original OEM valve used in multiple furnace brands.\u003c\/li\u003e\n\u003cli\u003eLow-Voltage Operation: Accepts 24 VAC control signal from system transformer for ignition and gas modulation.\u003c\/li\u003e\n\u003cli\u003eSlow-Opening Regulator: Ensures steady gas pressure and minimizes pressure shock during ignition.\u003c\/li\u003e\n\u003cli\u003e½″ NPT Body: Standard inlet and outlet fitting size for widespread furnace compatibility.\u003c\/li\u003e\n\u003cli\u003eIgnition Integration: Interfaces with hot-surface ignition systems, enabling prepurge, postpurge, and ignition sequencing.\u003c\/li\u003e\n\u003cli\u003eManual Shut-Off: Provides emergency control over gas flow for safety and maintenance.\u003c\/li\u003e\n\u003cli\u003eLED Diagnostics: Built-in LED status indicator enables quick troubleshooting of ignition and system faults.\u003c\/li\u003e\n\u003cli\u003eCross-Compatible: Direct replacement for Lennox\/Armstrong\/Ducane part numbers, ensuring wide OEM support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SV9520H8042 delivers the reliability and precision required for safe and efficient operation of hot-surface ignition heating systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105256939776,"sku":"SV9520H8042","price":733.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_f6c75611-e291-43d0-a9da-574019bfb7db.webp?v=1785543635","url":"https:\/\/alotechparts.com\/products\/sv9520h8042-honeywell-natural-gas-smartvalve-control-for-hot-surface-ignition-systems","provider":"Alo Tech Solutions","version":"1.0","type":"link"}