Lochinvar & A.O. Smith 100187876 Valve
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Lochinvar & A.O. Smith 100187876 Valve

Lochinvar & A.O. Smith 100187876 Valve

The Lochinvar & A.O. Smith 100187876 Valve is a critical OEM replacement gas valve designed for high-efficiency commercial water heaters and boilers. This dual-fuel gas valve assembly is engineered for precision modulation of both natural gas and liquid propane (LP), ensuring stoichiometric combustion across varying demand loads. Specifically optimized for the Lochinvar Knight and A.O. Smith Cyclone BTH, SUF, and HCG Series 200 models, this 3/4-inch NPT gas control integrates a high-performance venturi for superior air-fuel mixing. For technicians troubleshooting ignition failures or unstable flame signals, swapping out a compromised unit for this genuine 100187876 assembly restores factory-spec manifold pressure and combustion stability. Built with a rugged Dungs gas control platform, it provides the reliability needed for high-recovery heating environments, preventing nuisance lockouts and ensuring optimal thermal efficiency in demanding commercial applications.

Key Benefits
  • Dual-Fuel Versatility: Field-configurable for natural gas and LP applications, providing flexibility for diverse job site requirements.
  • Direct OEM Compatibility: Ensures a drop-in gas valve replacement for A.O. Smith Cyclone and Lochinvar Knight series without the need for manifold modifications.
  • Integrated Venturi Assembly: Features a factory-calibrated venturi to maintain precise air-gas ratios, maximizing combustion efficiency and reducing CO emissions.
  • Commercial-Grade Durability: Robust construction designed to withstand the high-cycle demands of high-efficiency water heaters and modern hydronic boilers.
Common Questions

Is this valve compatible with both Natural Gas and Liquid Propane?
Yes, the 100187876 is designed as a Nat and LP gas valve assembly, though technicians must verify specific orifice and spring settings based on the fuel source and appliance nameplate.

What water heater models use this specific assembly?
This 100187876 part is a standard commercial water heater part for A.O. Smith BTH (Cyclone), SUF, and HCG Series 200 units, as well as several Lochinvar high-efficiency boilers.

Does this kit include the venturi?
Yes, this is a complete gas valve and venturi assembly, which is necessary for maintaining the precise fuel-to-air mixture required by high-recovery, condensing equipment.

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.

$393.67

Original: $1,124.76

-65%
Lochinvar & A.O. Smith 100187876 Valve

$1,124.76

$393.67

Lochinvar & A.O. Smith 100187876 Valve

The Lochinvar & A.O. Smith 100187876 Valve is a critical OEM replacement gas valve designed for high-efficiency commercial water heaters and boilers. This dual-fuel gas valve assembly is engineered for precision modulation of both natural gas and liquid propane (LP), ensuring stoichiometric combustion across varying demand loads. Specifically optimized for the Lochinvar Knight and A.O. Smith Cyclone BTH, SUF, and HCG Series 200 models, this 3/4-inch NPT gas control integrates a high-performance venturi for superior air-fuel mixing. For technicians troubleshooting ignition failures or unstable flame signals, swapping out a compromised unit for this genuine 100187876 assembly restores factory-spec manifold pressure and combustion stability. Built with a rugged Dungs gas control platform, it provides the reliability needed for high-recovery heating environments, preventing nuisance lockouts and ensuring optimal thermal efficiency in demanding commercial applications.

Key Benefits
  • Dual-Fuel Versatility: Field-configurable for natural gas and LP applications, providing flexibility for diverse job site requirements.
  • Direct OEM Compatibility: Ensures a drop-in gas valve replacement for A.O. Smith Cyclone and Lochinvar Knight series without the need for manifold modifications.
  • Integrated Venturi Assembly: Features a factory-calibrated venturi to maintain precise air-gas ratios, maximizing combustion efficiency and reducing CO emissions.
  • Commercial-Grade Durability: Robust construction designed to withstand the high-cycle demands of high-efficiency water heaters and modern hydronic boilers.
Common Questions

Is this valve compatible with both Natural Gas and Liquid Propane?
Yes, the 100187876 is designed as a Nat and LP gas valve assembly, though technicians must verify specific orifice and spring settings based on the fuel source and appliance nameplate.

What water heater models use this specific assembly?
This 100187876 part is a standard commercial water heater part for A.O. Smith BTH (Cyclone), SUF, and HCG Series 200 units, as well as several Lochinvar high-efficiency boilers.

Does this kit include the venturi?
Yes, this is a complete gas valve and venturi assembly, which is necessary for maintaining the precise fuel-to-air mixture required by high-recovery, condensing equipment.

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.

Product Information

Shipping & Returns

Description

The Lochinvar & A.O. Smith 100187876 Valve is a critical OEM replacement gas valve designed for high-efficiency commercial water heaters and boilers. This dual-fuel gas valve assembly is engineered for precision modulation of both natural gas and liquid propane (LP), ensuring stoichiometric combustion across varying demand loads. Specifically optimized for the Lochinvar Knight and A.O. Smith Cyclone BTH, SUF, and HCG Series 200 models, this 3/4-inch NPT gas control integrates a high-performance venturi for superior air-fuel mixing. For technicians troubleshooting ignition failures or unstable flame signals, swapping out a compromised unit for this genuine 100187876 assembly restores factory-spec manifold pressure and combustion stability. Built with a rugged Dungs gas control platform, it provides the reliability needed for high-recovery heating environments, preventing nuisance lockouts and ensuring optimal thermal efficiency in demanding commercial applications.

Key Benefits
  • Dual-Fuel Versatility: Field-configurable for natural gas and LP applications, providing flexibility for diverse job site requirements.
  • Direct OEM Compatibility: Ensures a drop-in gas valve replacement for A.O. Smith Cyclone and Lochinvar Knight series without the need for manifold modifications.
  • Integrated Venturi Assembly: Features a factory-calibrated venturi to maintain precise air-gas ratios, maximizing combustion efficiency and reducing CO emissions.
  • Commercial-Grade Durability: Robust construction designed to withstand the high-cycle demands of high-efficiency water heaters and modern hydronic boilers.
Common Questions

Is this valve compatible with both Natural Gas and Liquid Propane?
Yes, the 100187876 is designed as a Nat and LP gas valve assembly, though technicians must verify specific orifice and spring settings based on the fuel source and appliance nameplate.

What water heater models use this specific assembly?
This 100187876 part is a standard commercial water heater part for A.O. Smith BTH (Cyclone), SUF, and HCG Series 200 units, as well as several Lochinvar high-efficiency boilers.

Does this kit include the venturi?
Yes, this is a complete gas valve and venturi assembly, which is necessary for maintaining the precise fuel-to-air mixture required by high-recovery, condensing equipment.

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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