Johnson Controls VG7441GS Valve 321142-301 the burner orifice may be

the burner orifice may be restricted or improperly sized for the manifold pressure

including the popular HD45 and HDS45 series

the internal contacts are engineered to prevent pitting and sticking

5 degree fixed differential prevents short-cycling of compressors or heating elements

Johnson Controls VG7441GS Valve 321142-301 the burner orifice may beThe Johnson Controls VG7441GS is a heavy duty 1 2 inch normally closed globe valve engineered for precise control in commercial HVACR systems. Built with a rugged cast bronze body and brass trim, this 2 way valve is designed to regulate the flow of hot water, chilled water, and 50 50 glycol solutions, as well as saturated steam up to 15 psig. With a 4. 6 Cv rating and an equal percentage flow characteristic, it ensures stable modulating control and