Johnson Controls VG74K1ST Reconditioning Kit 321042-401 While both series may share

While both series may share similar physical footprints

or if the burner flame characteristics show significant orange tipping that cannot be corrected by cleaning the venturi

This unit features a standard 1-inch bore

the bi-metal gas valve should be inspected for proper operation

With a medium temperature charge (FC)

Johnson Controls VG74K1ST Reconditioning Kit 321042-401 While both series may shareThe Johnson Controls VG74K1ST is a comprehensive field reconditioning kit designed for 2 inch VG7000 Series Bronze Control Valves. Engineered specifically for 2 way normally closed configurations with a push down to open action, this kit restores the internal trim to factory specifications, maintaining a 46. 2 Cv rating. Featuring brass trim and a precision machined threaded stem, the internal components are designed for equal percentage flow