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ASME Section IV "HV" certified safety device specifically engineered for low-pressure hot water boilers
architectures
High Thermal Efficiency: Optimized fin density balances superior heat exchange with minimal fan energy consumption
Multi-Refrigerant Compatibility: Rated for use with R-22
Corrosion Resistance: Full bronze construction and stainless steel spring internals handle saturated steam without premature degradation
Lochinvar & A.O. Smith 100187927 Burner Assembly 320788-703 ASME Section IV "HV" certifiedWhen you're servicing a failing GS(N)05040 natural gas water heater, the Lochinvar & A. O. Smith 100187927 Burner is the exact 20 inch final burner assembly required for a drop in replacement. This NAT 20" BURNER ASSY comes pre configured with a #34 orifice, ensuring the correct BTU output and manifold pressure for high efficiency operation in Lochinvar Series 400 units. Veteran techs know that burner degradation or cracked heads often lead to
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