Furnace Gas Shut Off Valve

A gas shut off valve can be found in most modern gas appliances.

Furnace gas shut off valve.

Again handle parallel to the line means gas is flowing perpendicular means it s cut off. Most service valves are single lever ball valves. In order to ensure safety when working on other parts of the furnace the shut off valve stops the flow of oil hot water or other type of material that the furnace uses to create the heat. Ultimately the thermocouple acts as a safety mechanism that prevents gas buildup within the home.

Without adequate heating of the thermocouple or thermopile the furnace gas valve closes. The shut off valve stands in between the oil supply and the actual furnace itself. The watts 201 5 valve shown will shut off the gas supply if water temperature exceeds 210 f. Details about this gas fired water heater automatic gas shutoff valve are at automatic gas water heater shutoff temperature operated gas supply shutoff for water heaters watts 210 5 series.

These valves allow you to stop the flow of gas to your dryer oven furnace water heater or gas fireplaces to make repairs or new installations without cutting off gas to your entire home. You will occasionally have to replace the gas shut off valve or thermocouple as it is also called. Local shut off valves local shutoff valves have handles that limit the flow of gas to a specific appliance. They are designed to close the gas supply if the pilot light flame does not come on or if it is extinguished for some reason.

A broken furnace shut off valve is a serious problem that must be attended to as soon as it is realized. As a result this cuts off the supply of gas to the pilot light.