Gas valves & coils

Gas valves and coils control the flow of gas to the burner head, regulate inlet pressure and provide the automatic shut-off required by safety standards. They sit between the gas supply line and the burner manifold, and a faulty valve — whether it fails to open, leaks, or holds open — directly affects combustion quality and appliance safety. This section covers gas filters, nozzles and injectors, pressure regulators, automatic and manual shut-off valves, and the replacement coils that actuate them, with parts suited to atmospheric, forced-draught and condensing appliances.

To select the correct part, identify the gas type (natural gas or LPG), inlet and outlet connection size and thread standard (G, NPT or BSP), nominal flow rate, operating voltage of the coil (typically 24 V AC, 110 V AC or 230 V AC), and the opening angle or valve configuration required. Single-stage, two-stage and modulating versions are not interchangeable. The order number printed on the original component is the fastest route to an exact match; a part number from Honeywell, Dungs, Kromschroder, Brahma or any other maker in this section can be used to locate a direct replacement here.