R0385100 | Laars 24 V Natural Gas Valve 4″W.C., ½″×¾″, Spark Ignition

Honeywell · Valves & Process Control

Description  The 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.     Technical Specifications  Condition New / Never Used Surplus Brand Laars Category Valves Part Number R0385100 Subcategory Solenoid/Natural Gas Control Valve Fuel Type Natural Gas Control Voltage 24 V AC Nominal Pressure Drop 4″ W.C. (inches water column) Inlet Port Size ½″ NPT Outlet Port Size ¾″ NPT Ignition Type Spark Ignition Stages Single-Stage (On/Off) Intended Application Boilers, combustion units, HVAC gas burners Compatibility Laars JVS / JVSND / BWS series etc. Weight Approx. 2.00 lbs     Information About R0385100 The 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. Key Features: 24 V Control Voltage: Designed for low-voltage control circuits common in HVAC systems. Rated 4″ W.C.: Nominal outlet pressure drop of 4 inches water column for natural gas operation. Natural Gas Service: Factory configured for natural gas (not LP unless converted). ½″ × ¾″ Connections: Provides ½″ inlet and ¾″ outlet port sizing for flow compatibility. Spark Ignition Type: Suited for burners using spark ignition rather than standing pilot. Single-Stage Operation: Opens once for full-output burner cycle (on/off) rather than multi-stage. OEM Replacement Part: Designed for Laars equipment, enabling exact fit and function in matching models. Industrial Construction: Built for combustion service with durable body and internal components. Easy Installation: Common control voltage and port size facilitate direct swap-in replacement. The R0385100 delivers the reliability and performance required for single-stage natural-gas burner control in commercial and residential boiler systems.

Brand: Honeywell · Category: Valves & Process Control

Key features

• 24 V Control Voltage: Designed for low-voltage control circuits common in HVAC systems.
• Rated 4″ W.C.: Nominal outlet pressure drop of 4 inches water column for natural gas operation.
• Natural Gas Service: Factory configured for natural gas (not LP unless converted).
• ½″ × ¾″ Connections: Provides ½″ inlet and ¾″ outlet port sizing for flow compatibility.
• Spark Ignition Type: Suited for burners using spark ignition rather than standing pilot.
• Single-Stage Operation: Opens once for full-output burner cycle (on/off) rather than multi-stage.
• OEM Replacement Part: Designed for Laars equipment, enabling exact fit and function in matching models.
• Industrial Construction: Built for combustion service with durable body and internal components.
• Easy Installation: Common control voltage and port size facilitate direct swap-in replacement.

Specifications

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