{"product_id":"r0385100-laars-24-v-natural-gas-valve-4wc-spark-ignition","title":"R0385100 | Laars 24 V Natural Gas Valve 4″W.C., ½″×¾″, Spark Ignition","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eThe R0385100 is a one-stage spark-ignition natural gas valve rated for 24 V control voltage with a nominal 4 in-water-column pressure drop. It features a ½″ inlet × ¾″ outlet connection and is designed to regulate gas flow in boilers and other HVAC combustion equipment. Ideal as a direct replacement part for Laars systems using single-stage ignition, it ensures reliable fuel control and safe operation.\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\u003eLaars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eValves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR0385100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSolenoid\/Natural Gas Control Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Pressure Drop\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4″ W.C. (inches water column)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Port Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e½″ NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutlet Port Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e¾″ NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIgnition Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpark Ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStages\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle-Stage (On\/Off)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended Application\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBoilers, combustion units, HVAC gas burners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLaars JVS \/ JVSND \/ BWS series etc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 2.00 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\"\u003eR0385100\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe R0385100 is part of Laars’ single-stage gas valve line configured for spark ignition natural gas burners. Operating at 24 VAC control voltage, it is designed for a nominal outlet pressure drop of 4″ W.C. (inches water column) in natural-gas applications. The valve uses a ½″ NPT inlet and ¾″ NPT outlet (or equivalent sizing) for flow connection. It is compatible with a number of Laars boilers in the JVS, JVSND, BWS and other series. The valve supports spark-ignited burners (versus standing-pilot) and is suitable for retrofit or replacement in existing systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e24 V Control Voltage: Designed for low-voltage control circuits common in HVAC systems.\u003c\/li\u003e\n\u003cli\u003eRated 4″ W.C.: Nominal outlet pressure drop of 4 inches water column for natural gas operation.\u003c\/li\u003e\n\u003cli\u003eNatural Gas Service: Factory configured for natural gas (not LP unless converted).\u003c\/li\u003e\n\u003cli\u003e½″ × ¾″ Connections: Provides ½″ inlet and ¾″ outlet port sizing for flow compatibility.\u003c\/li\u003e\n\u003cli\u003eSpark Ignition Type: Suited for burners using spark ignition rather than standing pilot.\u003c\/li\u003e\n\u003cli\u003eSingle-Stage Operation: Opens once for full-output burner cycle (on\/off) rather than multi-stage.\u003c\/li\u003e\n\u003cli\u003eOEM Replacement Part: Designed for Laars equipment, enabling exact fit and function in matching models.\u003c\/li\u003e\n\u003cli\u003eIndustrial Construction: Built for combustion service with durable body and internal components.\u003c\/li\u003e\n\u003cli\u003eEasy Installation: Common control voltage and port size facilitate direct swap-in replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe R0385100 delivers the reliability and performance required for single-stage natural-gas burner control in commercial and residential boiler systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105086513408,"sku":"R0385100","price":623.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/2025-11-04_213044.png?v=1785539833","url":"https:\/\/alotechparts.com\/products\/r0385100-laars-24-v-natural-gas-valve-4wc-spark-ignition","provider":"Alo Tech Solutions","version":"1.0","type":"link"}