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Lochinvar 100187874 OEM Pneumatic Ratio Gas Control Valve
- Regular price
- $799.00
- Sale price
- $799.00
- Regular price
-
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Product Description P/N: 100187874
Description
The Lochinvar 100187874 is a heavy-duty OEM negative pressure gas valve engineered to precisely regulate fuel flow to the combustion blower in commercial condensing boilers and water heaters. It modulates gas delivery proportionally to incoming airflow, maintaining optimal combustion ratios across the entire firing range. Built for strict safety compliance, this valve ensures clean burning, low emissions, and reliable shut-off.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Lochinvar |
| Category | Boiler and Water Heater Parts |
| Part Number | 100187874 |
| Subcategory | Gas Valves |
| Valve Type | Pneumatic Ratio Gas Control Valve |
| System Compatibility | Lochinvar Condensing Boilers / Heaters |
| Body Material | Cast Aluminum |
| Application | Premix Burner Fuel Regulation |
| Weight | 3.1 lbs |
Information About 100187874
The 100187874 is a precision pneumatic-ratio gas control valve designed to work seamlessly with variable-speed premix combustion blowers on Lochinvar equipment. By sensing subtle pressure differentials from the air intake venturi, it automatically adjusts gas volume to match fan speed, eliminating rich or lean firing conditions. Equipped with dual redundant safety shut-off solenoids and standard threaded pipe connections, it immediately isolates the fuel supply during power loss or safety limit trips.
Key Features:
-
Pneumatic Air-Fuel Ratio Control: Automatically modulates gas flow in direct proportion to combustion blower speed for high efficiency.
-
Dual Safety Shut-Off: Incorporates two independent solenoid valves to guarantee positive, leak-tight gas isolation when idle.
-
Low-Emission Combustion: Maintains clean, stable flame characteristics across high turndown ratios to minimize NOx and CO output.
-
OEM Factory Calibration: Pre-calibrated to exact Lochinvar manifold specifications for streamlined commissioning and safe operation.
-
Rugged Cast Aluminum Body: Built to endure continuous mechanical vibration and demanding commercial mechanical room temperatures.
-
Integrated Pressure Taps: Features accessible inlet and outlet test ports to simplify gas pressure verification during startup.
The 100187874 delivers the fuel modulation accuracy and shut-off safety required for modern condensing heating systems.
Description
The Lochinvar 100187874 is a heavy-duty OEM negative pressure gas valve engineered to precisely regulate fuel flow to the combustion blower in commercial condensing boilers and water heaters. It modulates gas delivery proportionally to incoming airflow, maintaining optimal combustion ratios across the entire firing range. Built for strict safety compliance, this valve ensures clean burning, low emissions, and reliable shut-off.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Lochinvar |
| Category | Boiler and Water Heater Parts |
| Part Number | 100187874 |
| Subcategory | Gas Valves |
| Valve Type | Pneumatic Ratio Gas Control Valve |
| System Compatibility | Lochinvar Condensing Boilers / Heaters |
| Body Material | Cast Aluminum |
| Application | Premix Burner Fuel Regulation |
| Weight | 3.1 lbs |
Information About 100187874
The 100187874 is a precision pneumatic-ratio gas control valve designed to work seamlessly with variable-speed premix combustion blowers on Lochinvar equipment. By sensing subtle pressure differentials from the air intake venturi, it automatically adjusts gas volume to match fan speed, eliminating rich or lean firing conditions. Equipped with dual redundant safety shut-off solenoids and standard threaded pipe connections, it immediately isolates the fuel supply during power loss or safety limit trips.
Key Features:
-
Pneumatic Air-Fuel Ratio Control: Automatically modulates gas flow in direct proportion to combustion blower speed for high efficiency.
-
Dual Safety Shut-Off: Incorporates two independent solenoid valves to guarantee positive, leak-tight gas isolation when idle.
-
Low-Emission Combustion: Maintains clean, stable flame characteristics across high turndown ratios to minimize NOx and CO output.
-
OEM Factory Calibration: Pre-calibrated to exact Lochinvar manifold specifications for streamlined commissioning and safe operation.
-
Rugged Cast Aluminum Body: Built to endure continuous mechanical vibration and demanding commercial mechanical room temperatures.
-
Integrated Pressure Taps: Features accessible inlet and outlet test ports to simplify gas pressure verification during startup.
The 100187874 delivers the fuel modulation accuracy and shut-off safety required for modern condensing heating systems.
