Lochinvar & A.O. Smith 100135270 Burner 319825-402 4" diaphragm provides significant force

4" diaphragm provides significant force for controlling large-scale dampers and VF style valves

Longevity in Harsh Conditions: Corrosion-resistant finish designed to withstand the humidity and temperature swings found in outdoor condensing units

making it a versatile drop-in replacement for retrofits and legacy system repairs

blue flame pattern for optimal heat transfer

Can I handle the heating element during installation

Lochinvar & A.O. Smith 100135270 Burner 319825-402 4" diaphragm provides significant forceWhen you're out in the field servicing a Lochinvar Copper Fin II or high capacity A. O. Smith water heater, combustion consistency is everything. The Lochinvar & A. O. Smith 100135270 Burner is the direct OEM replacement for the aging BNR30011 assembly. This critical component is engineered specifically for 500 750 KBTU systems, delivering the precise atmospheric mixing required to prevent soot accumulation and maintain high efficiency thermal output.