Replaces Part Number: V4600C1086U, V4600C1029, 062240, V4600C1326, 402809, 062623. Honeywell Gas Valve V4600C1086 is a special mechanical device which is designed to control the pressure and flow of gas to the Honeywell Gas Valve V4600C1086 . This is a mechanism that controls the flow of gas to the burner, depending on the model of your boiler, it?s controlled by an electrical signal coming from the printed circuit board (PCB).