Broad Compatibility: Fits Johnson Controls V-3974

A snap-action valve is strictly on/off

ensuring proper fitment and terminal alignment without field modifications

Precision Alignment: Engineered to exact OEM specifications for seamless integration into Carrier gas-fired heating sections

and Coleman air handlers and rooftop units

Lochinvar & A.O. Smith 100276843 Gasket R-407C Broad Compatibility: Fits Johnson ControlsFor high performance hydronic and domestic hot water systems, the Lochinvar & A. O. Smith 100276843 Gasket is a critical OEM component designed to maintain the integrity of the 2 burner assembly interface. As a veteran technician knows, achieving a precise combustion chamber seal is non negotiable for system safety and operational efficiency. This high temp gasket provides a robust barrier between the burner manifold and the heat exchanger,