{"product_id":"vs8420e2087-honeywell-millivolt-gas-valve-replacement-for-lennox-82l86","title":"VS8420E2087 | Honeywell Millivolt Gas Valve Replacement for Lennox 82L86","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eThe Honeywell VS8420E2087 is a millivolt-operated gas control valve designed as a direct replacement for select Lennox systems (including part reference 82L86). It provides reliable safety shut-off and gas regulation for pilot-ignited heating appliances. Engineered for residential furnaces and fireplaces, the valve delivers controlled fuel flow and manual\/automatic operation for efficient performance.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\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\u003eHVAC Controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVS8420E2087\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillivolt Gas Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCombination gas control with manual and automatic operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillivolt (thermocouple\/thermopile) pilot systems\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 \/ LP (convertible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRegulator Setting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNAT: 3–5 in. W.C.; LP: 8–12 in. W.C.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Positions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOFF \/ PILOT \/ ON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure Regulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdjustable internal regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone (self-powered millivolt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet\/Outlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 3\/8″ NPT (typical for this series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 60,000 BTU\/h (approximate typical value)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 °F to +175 °F (–18 °C to +79 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReplaces Lennox 82L86 and equivalent valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Orientation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHorizontal, upright position recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety Features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic flame failure shutoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~4 lbs\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\"\u003eVS8420E2087\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe VS8420E2087 belongs to the Honeywell VS8420E series of millivolt combination gas valves, which integrate manual control knob, regulator and internal safety shut-off functions. These valves work without external electrical power, using a thermopile\/thermocouple system to sense pilot flame and permit main burner operation. The “E” suffix denotes a version with high\/low pressure regulator, convertible between natural gas and LP with proper conversion kit. Although discontinued by Honeywell, this valve is still used in legacy Lennox models, offering backward-compatible replacement for previously installed valves with part number 82L86 or equivalent. The unit supports proper installation with sediment trap, correct gas flow direction, and compliance with national fuel gas codes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMillivolt Operation: Works with thermopile\/thermocouple pilot systems for valve actuation without external 24 V power.\u003c\/li\u003e\n\u003cli\u003eConvertible Regulator: High\/low regulator version allows field selection for Natural Gas or LP with conversion cap.\u003c\/li\u003e\n\u003cli\u003eManual Control Knob: Provides OFF, PILOT and ON positions for safe start-up and shutdown.\u003c\/li\u003e\n\u003cli\u003eAdjustable Pressure Regulation: Natural gas setting approx. 3”–5” wc, LP setting approx. 8”–12” wc (varies by model).\u003c\/li\u003e\n\u003cli\u003eThermopile\/TC Compatibility: Designed for self-generating pilot systems with minimum required mV output.\u003c\/li\u003e\n\u003cli\u003eLegacy System Support: Direct replacement for Lennox 82L86 and other VS8420E versions, simplifying retrofits.\u003c\/li\u003e\n\u003cli\u003eCompact Millivolt Valve Design: Suitable for small-to-mid-BTU space-heating and furnace applications (up to ~60,000 BTU\/h in many VS8420 models).\u003c\/li\u003e\n\u003cli\u003eService-Friendly Mounting: Straight-through flow, standard inlet\/outlet threads, allows quick swap in field.\u003c\/li\u003e\n\u003cli\u003eSafety Certified: Meets safety shut-off requirements for pilot flame failure and pressure regulation as described in official documentation.\u003c\/li\u003e\n\u003cli\u003eDiscontinued but Serviceable: Though marked “OBSOLETE” in manufacturer literature, many HVAC parts suppliers still stock or support replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe VS8420E2087 delivers the reliability and precision required for safe and efficient valve control in legacy residential heating systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105089462528,"sku":"VS8420E2087","price":1112.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_c597b6a7-4775-4edf-a8da-7d158fdd54d5.webp?v=1785539923","url":"https:\/\/alotechparts.com\/products\/vs8420e2087-honeywell-millivolt-gas-valve-replacement-for-lennox-82l86","provider":"Alo Tech Solutions","version":"1.0","type":"link"}