
Laars Heating Systems R0385100 Gas Valve
The Laars Heating Systems R0385100 Gas Valve is a critical replacement component engineered for precision fuel regulation in residential and commercial hydronic boilers. Designed for natural gas (NAT) systems, this single-stage valve operates on a 24V AC control circuit and is factory-set for a 4" WC (Water Column) manifold pressure. Professionals will recognize its integration as a 1-stage spark ignition gas valve, making it compatible with a wide range of Laars equipment, including JVS, JVSND, and BWS series boilers. The hardware features standard 1/2" NPT inlet and 3/4" NPT outlet connections, facilitating a direct swap for failing or compromised solenoids. As a high-performance HVAC replacement part, it ensures reliable flow control and safe ignition sequences, maintaining proper combustion parameters within the heat exchanger. When diagnosing ignition failure or manifold pressure fluctuations, this OEM-spec valve provides the exact electrical and mechanical tolerances required to restore system efficiency and operational safety in high-demand environments.
Key Benefits- Direct OEM Compatibility: Specifically engineered as a high-reliability replacement for Laars heating systems to ensure seamless fitment and zero-leak integrity.
- Broad Model Support: Validated for use in JVH, JVS, and BWS series, addressing common gas valve solenoid failures in residential boiler units.
- Industrial-Grade Construction: Features a rugged 1/2" x 3/4" gas valve body designed to withstand high-cycle operations in modern spark-ignition systems.
- Standardized Electrical Specs: Operates on a standard 24VAC control signal, matching the existing wiring harness and ignition module outputs.
- Can this gas valve be used with Liquid Propane (LP) systems? This specific model is configured for Natural Gas at 4" WC. Conversion to LP requires a specific manufacturer-approved conversion kit; always verify orifice sizing and spring requirements before installation.
- Does the R0385100 work with standing pilot systems? No, this is a spark ignition gas valve designed for electronic ignition controls. It does not provide the pilot gas output necessary for standing pilot assemblies.
- Why is my boiler failing to ignite despite having 24V at the valve? If the Laars R0385100 receives power but fails to open, check for a clogged internal screen or manifold blockage. Ensure the ignition control is successfully proving flame after the valve opens.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $245.68
-65%$245.68
$85.99Laars Heating Systems R0385100 Gas Valve
The Laars Heating Systems R0385100 Gas Valve is a critical replacement component engineered for precision fuel regulation in residential and commercial hydronic boilers. Designed for natural gas (NAT) systems, this single-stage valve operates on a 24V AC control circuit and is factory-set for a 4" WC (Water Column) manifold pressure. Professionals will recognize its integration as a 1-stage spark ignition gas valve, making it compatible with a wide range of Laars equipment, including JVS, JVSND, and BWS series boilers. The hardware features standard 1/2" NPT inlet and 3/4" NPT outlet connections, facilitating a direct swap for failing or compromised solenoids. As a high-performance HVAC replacement part, it ensures reliable flow control and safe ignition sequences, maintaining proper combustion parameters within the heat exchanger. When diagnosing ignition failure or manifold pressure fluctuations, this OEM-spec valve provides the exact electrical and mechanical tolerances required to restore system efficiency and operational safety in high-demand environments.
Key Benefits- Direct OEM Compatibility: Specifically engineered as a high-reliability replacement for Laars heating systems to ensure seamless fitment and zero-leak integrity.
- Broad Model Support: Validated for use in JVH, JVS, and BWS series, addressing common gas valve solenoid failures in residential boiler units.
- Industrial-Grade Construction: Features a rugged 1/2" x 3/4" gas valve body designed to withstand high-cycle operations in modern spark-ignition systems.
- Standardized Electrical Specs: Operates on a standard 24VAC control signal, matching the existing wiring harness and ignition module outputs.
- Can this gas valve be used with Liquid Propane (LP) systems? This specific model is configured for Natural Gas at 4" WC. Conversion to LP requires a specific manufacturer-approved conversion kit; always verify orifice sizing and spring requirements before installation.
- Does the R0385100 work with standing pilot systems? No, this is a spark ignition gas valve designed for electronic ignition controls. It does not provide the pilot gas output necessary for standing pilot assemblies.
- Why is my boiler failing to ignite despite having 24V at the valve? If the Laars R0385100 receives power but fails to open, check for a clogged internal screen or manifold blockage. Ensure the ignition control is successfully proving flame after the valve opens.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Laars Heating Systems R0385100 Gas Valve is a critical replacement component engineered for precision fuel regulation in residential and commercial hydronic boilers. Designed for natural gas (NAT) systems, this single-stage valve operates on a 24V AC control circuit and is factory-set for a 4" WC (Water Column) manifold pressure. Professionals will recognize its integration as a 1-stage spark ignition gas valve, making it compatible with a wide range of Laars equipment, including JVS, JVSND, and BWS series boilers. The hardware features standard 1/2" NPT inlet and 3/4" NPT outlet connections, facilitating a direct swap for failing or compromised solenoids. As a high-performance HVAC replacement part, it ensures reliable flow control and safe ignition sequences, maintaining proper combustion parameters within the heat exchanger. When diagnosing ignition failure or manifold pressure fluctuations, this OEM-spec valve provides the exact electrical and mechanical tolerances required to restore system efficiency and operational safety in high-demand environments.
Key Benefits- Direct OEM Compatibility: Specifically engineered as a high-reliability replacement for Laars heating systems to ensure seamless fitment and zero-leak integrity.
- Broad Model Support: Validated for use in JVH, JVS, and BWS series, addressing common gas valve solenoid failures in residential boiler units.
- Industrial-Grade Construction: Features a rugged 1/2" x 3/4" gas valve body designed to withstand high-cycle operations in modern spark-ignition systems.
- Standardized Electrical Specs: Operates on a standard 24VAC control signal, matching the existing wiring harness and ignition module outputs.
- Can this gas valve be used with Liquid Propane (LP) systems? This specific model is configured for Natural Gas at 4" WC. Conversion to LP requires a specific manufacturer-approved conversion kit; always verify orifice sizing and spring requirements before installation.
- Does the R0385100 work with standing pilot systems? No, this is a spark ignition gas valve designed for electronic ignition controls. It does not provide the pilot gas output necessary for standing pilot assemblies.
- Why is my boiler failing to ignite despite having 24V at the valve? If the Laars R0385100 receives power but fails to open, check for a clogged internal screen or manifold blockage. Ensure the ignition control is successfully proving flame after the valve opens.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












