{"product_id":"4021-736","title":"4021-736 PILOT ASSEMBLY PSE – Natural Gas – Millivolt","description":"\u003cp\u003e\u003cstrong\u003eWhat This Part Does\u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003eThe \u003cstrong\u003e4021-736\u003c\/strong\u003e pilot assembly is a \u003cstrong\u003eNatural Gas millivolt (standing pilot) ignition component\u003c\/strong\u003e responsible for lighting the pilot flame and generating the electrical signal required to operate the gas valve.\u003c\/p\u003e  \u003cp\u003eIn a \u003cstrong\u003emillivolt (standing pilot) system\u003c\/strong\u003e, the pilot flame heats the thermocouple and thermopile. The thermocouple helps keep the pilot gas flow open for safety, while the thermopile generates the millivolt power used to operate the main gas valve.\u003c\/p\u003e  \u003cp\u003eWhen a call for heat is made from a wall switch, thermostat, or remote, the thermopile supplies voltage to the gas valve, allowing it to open and deliver gas to the main burner.\u003c\/p\u003e  \u003cp\u003eThis assembly also includes the pilot burner and ignition source, which are responsible for reliably lighting the pilot flame.\u003c\/p\u003e  \u003cp\u003eProper pilot assembly operation is essential for safe ignition, consistent voltage generation, and reliable fireplace performance.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eNot sure if this is the right part?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBefore ordering, check the following:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLocate your model number (typically behind the lower louver or inside the control compartment)\u003c\/li\u003e\n\u003cli\u003eConfirm your unit uses a \u003cstrong\u003emillivolt (standing pilot)\u003c\/strong\u003e system\u003c\/li\u003e\n\u003cli\u003eConfirm your gas type is \u003cstrong\u003enatural gas\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompare your existing pilot assembly to the images provided\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ This part is \u003cstrong\u003eNOT for IPI (electronic ignition)\u003c\/strong\u003e systems\u003cbr\u003e⚠️ This part is \u003cstrong\u003eNOT for propane (LP)\u003c\/strong\u003e units\u003c\/p\u003e\u003cp\u003eIf unsure, refer to your manual or contact us for help identifying the correct part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e🔁 Using propane (LP) instead of natural gas?\u003c\/strong\u003e\u003cbr\u003eThis part will not work. View the correct LP version here: \u003ca href=\"\/products\/4021-737\"\u003e\u003cstrong\u003e4021-737\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Hearth.Parts","offers":[{"title":"Default Title","offer_id":47492038262962,"sku":"4021-736","price":133.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/7117\/3298\/files\/4021-736_02.jpg?v=1779395678","url":"https:\/\/hearth.parts\/products\/4021-736","provider":"Hearth.Parts","version":"1.0","type":"link"}