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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 charge turns on an electromagnet which opens a valve and allows the gas or water to flow through.
Part No: 1690940 / MPN: S00184
Sorry, this part is now obsolete
Part No: 1690941 / MPN: S00196
Part No: 1690453 / MPN: 1000-0703780
Part No: 1690942 / MPN: S00582