Vaillant Gas Valves (Page 5)
The gas valve is a mechanism used for gas distribution. When there is a need for more gas in the burner, a signal is sent from the PCB to the gas valve, which opens and allows gas to flow through the valve in to the pilot assembly or the burner dependant on the type of appliance.
VAILLANT 021166 GAS VALVE
Part No: 1372258 / MPN: 021166
VAILLANT 050167 GAS OPERATOR
Part No: 1372548 / MPN: 050167