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Old 12-04-2013, 11:13 AM   #1
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safe to reuse gas fitting?

I've been told that the small pipe that supplies flame to a thermopile in my gas fireplace pilot light might be restricted and causing the thermopile to fail. Can I remove this fitting, clean it, and reinstall it? Or should I just buy another one?



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Old 12-04-2013, 11:56 AM   #2
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A Pro sometimes can take the pilot burner apart and clean the orifice which is restricted. Not a DIY job as you need special orifice bits and it is very easily damaged and the fittings on the burner may leak later. Sometimes we have to replace the pilot burner, depends on the style etc. It may not be restricted and you have other problems like a weak thermopile or poor wiring connections at the gas valve and other components.


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Old 12-04-2013, 12:58 PM   #3
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The only way the pilot tube is likely to be restricting the pilot gas is if it severley crimped or bent. A pilot gas limit is usually a build up of dirt within the pilot orifice. Lightly tapping the base of the pilot assy with a screwdriver while the pilot is burning will often dislodge the obstructing debris and if so you will then notice the pilot flame become bluer, harder and better envelope the thermopile.

If no improvement then someone needs to check if
the pilot gas setting on the gas valve needs to be adjusted. That is best left to a pro as would be the disassembly of the pilot assy to clean or replace the pilot orifice.
If dirty the pilot orifice can be cleaned, if coroded the orifice needs to be replaced.

As Yuri notes though, There is a host of other things that can cause a thermopile to not activate the gas valve electromagnet.
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Old 12-04-2013, 01:36 PM   #4
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would be better to get a new piece and change it might be brittle and pitted from the years of heat check it anyway wen removing it could be a bug or spider
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