A thermocouple is a device that is made of two different metals that produce a small electrical charge when heated on one side. This small electrical charge switches on an electromagnet which opens a valve and no longer restricts the flow of water or gas .
Fits a Number of Appliances
Technical specification
Waist Sizeac24cf24fwToilet Cistern CapacityFTW--Supplier Part Number87161423240Brand NameWorcester Bosch