Lochinvar & A.O. Smith 100187874 Gas Valve//Venturi Assembly
The Lochinvar & A.O. Smith 100187874 Gas Valve/Venturi Assembly is a critical OEM component designed for high-efficiency natural gas condensing boilers and water heaters. As a veteran technician knows, maintaining the correct air-gas stoichiometric ratio is essential for peak combustion performance. This assembly integrates a precision SIT gas control valve with a specifically calibrated venturi to ensure stable gas pressure regulation across varying firing rates. Engineered for compatibility with select Knight XL and Crest models, this 100187874 replacement part eliminates common combustion issues such as resonant noise or inconsistent ignition. By utilizing this genuine Lochinvar boiler part, contractors ensure the system maintains its original AHRI efficiency ratings and low-NOx emissions output. The robust construction provides long-term reliability in demanding commercial water heating and residential hydronic applications, providing a direct-fit solution that simplifies field installation and manometer calibration procedures.
Key Benefits for Contractors
- Optimized Combustion: Integrated venturi design ensures a precise fuel-to-air mixture for high-efficiency condensing units.
- Direct OEM Replacement: Replaces part number 100187874 exactly, maintaining the safety and certification standards of the original equipment.
- Broad Compatibility: Fits various Lochinvar and A.O. Smith commercial water heaters and high-output boilers.
- Reliable Calibration: Built to maintain precise manifold pressure, reducing the need for frequent field adjustments.
- Clean Burning: Contributes to stable flame signals and prevents soot buildup on the heat exchanger.
Common Questions
Is the 100187874 compatible with Liquid Propane (LP) systems?
No, this specific assembly is configured for Natural Gas (NG). Using this assembly on LP systems without a certified conversion kit can cause hazardous operation and system failure.
Why should I replace the venturi and gas valve as a single assembly?
Replacing the gas valve/venturi assembly as a factory-mated unit ensures the internal gaskets and venturi ports are sealed correctly, preventing gas leaks and ensuring the venturi vacuum signal is accurate.
What are the signs that a gas valve/venturi assembly is failing?
Common indicators include "Ignition Failure" or "Flame Loss" error codes, irregular acoustic resonance (booming or whistling) during startup, or an inability to reach high-fire input benchmarks during combustion analysis.
This item is not eligible for free shipping.
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: $592.04
-65%$592.04
$207.21Lochinvar & A.O. Smith 100187874 Gas Valve//Venturi Assembly
The Lochinvar & A.O. Smith 100187874 Gas Valve/Venturi Assembly is a critical OEM component designed for high-efficiency natural gas condensing boilers and water heaters. As a veteran technician knows, maintaining the correct air-gas stoichiometric ratio is essential for peak combustion performance. This assembly integrates a precision SIT gas control valve with a specifically calibrated venturi to ensure stable gas pressure regulation across varying firing rates. Engineered for compatibility with select Knight XL and Crest models, this 100187874 replacement part eliminates common combustion issues such as resonant noise or inconsistent ignition. By utilizing this genuine Lochinvar boiler part, contractors ensure the system maintains its original AHRI efficiency ratings and low-NOx emissions output. The robust construction provides long-term reliability in demanding commercial water heating and residential hydronic applications, providing a direct-fit solution that simplifies field installation and manometer calibration procedures.
Key Benefits for Contractors
- Optimized Combustion: Integrated venturi design ensures a precise fuel-to-air mixture for high-efficiency condensing units.
- Direct OEM Replacement: Replaces part number 100187874 exactly, maintaining the safety and certification standards of the original equipment.
- Broad Compatibility: Fits various Lochinvar and A.O. Smith commercial water heaters and high-output boilers.
- Reliable Calibration: Built to maintain precise manifold pressure, reducing the need for frequent field adjustments.
- Clean Burning: Contributes to stable flame signals and prevents soot buildup on the heat exchanger.
Common Questions
Is the 100187874 compatible with Liquid Propane (LP) systems?
No, this specific assembly is configured for Natural Gas (NG). Using this assembly on LP systems without a certified conversion kit can cause hazardous operation and system failure.
Why should I replace the venturi and gas valve as a single assembly?
Replacing the gas valve/venturi assembly as a factory-mated unit ensures the internal gaskets and venturi ports are sealed correctly, preventing gas leaks and ensuring the venturi vacuum signal is accurate.
What are the signs that a gas valve/venturi assembly is failing?
Common indicators include "Ignition Failure" or "Flame Loss" error codes, irregular acoustic resonance (booming or whistling) during startup, or an inability to reach high-fire input benchmarks during combustion analysis.
This item is not eligible for free shipping.
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 Lochinvar & A.O. Smith 100187874 Gas Valve/Venturi Assembly is a critical OEM component designed for high-efficiency natural gas condensing boilers and water heaters. As a veteran technician knows, maintaining the correct air-gas stoichiometric ratio is essential for peak combustion performance. This assembly integrates a precision SIT gas control valve with a specifically calibrated venturi to ensure stable gas pressure regulation across varying firing rates. Engineered for compatibility with select Knight XL and Crest models, this 100187874 replacement part eliminates common combustion issues such as resonant noise or inconsistent ignition. By utilizing this genuine Lochinvar boiler part, contractors ensure the system maintains its original AHRI efficiency ratings and low-NOx emissions output. The robust construction provides long-term reliability in demanding commercial water heating and residential hydronic applications, providing a direct-fit solution that simplifies field installation and manometer calibration procedures.
Key Benefits for Contractors
- Optimized Combustion: Integrated venturi design ensures a precise fuel-to-air mixture for high-efficiency condensing units.
- Direct OEM Replacement: Replaces part number 100187874 exactly, maintaining the safety and certification standards of the original equipment.
- Broad Compatibility: Fits various Lochinvar and A.O. Smith commercial water heaters and high-output boilers.
- Reliable Calibration: Built to maintain precise manifold pressure, reducing the need for frequent field adjustments.
- Clean Burning: Contributes to stable flame signals and prevents soot buildup on the heat exchanger.
Common Questions
Is the 100187874 compatible with Liquid Propane (LP) systems?
No, this specific assembly is configured for Natural Gas (NG). Using this assembly on LP systems without a certified conversion kit can cause hazardous operation and system failure.
Why should I replace the venturi and gas valve as a single assembly?
Replacing the gas valve/venturi assembly as a factory-mated unit ensures the internal gaskets and venturi ports are sealed correctly, preventing gas leaks and ensuring the venturi vacuum signal is accurate.
What are the signs that a gas valve/venturi assembly is failing?
Common indicators include "Ignition Failure" or "Flame Loss" error codes, irregular acoustic resonance (booming or whistling) during startup, or an inability to reach high-fire input benchmarks during combustion analysis.
This item is not eligible for free shipping.
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.
