Gas water heater question

[Bruce A. King]

Does anyone know if gas water heaters have a safety cutout on the gas valve that trips at a certain water temperature?


I know electric ones have trip devices on the thermosat/contactors.
This is why the TPR valves do not see much excitement during their lifespan.

[Jeffrey R. Pope]

A Watts 210 valve is a gas shut-off that operates if the heater reaches 210 degrees.

Is that what you are referring to?

[dchew]

If you run into a Watt 210, be sure that there is a manually operated pressure release valve somewhere in the hot water line. Check the manufacturer's website for more information.

[Jeffrey R. Pope]

Originally Posted by dchew

be sure that there is a manually operated pressure release valve somewhere in the hot water line.

Must be automatic, not manually operated.

[Bruce A. King]

I don't see the watts type around here.

I was referring to a possible feature built into the control valve on newer units.

[dchew]

I stand corrected. Here is manufacturer's spec sheet.

http://www.plumbersurplus.com/pdf/01146.pdf