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Thread: Cracked gas regulator on new stove?

  1. #1
    DIY Junior Member TedSF's Avatar
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    Default Cracked gas regulator on new stove?

    Hey there,

    Long time reader, first time poster. Anyways today I was trimming out a kitchen and while tightening a 1/2 male by flare adapter into the stove's regulator I heard a crack, I stopped tightening there and pressurized the line and sure enough the bottom of the pressure regulator had a crack along the female threads. Upon removing the flared adapter I noticed that my pipe dope had only reached about 1/2 way into the fitting and while I was tightening I felt like the adapter was still somewhat loose (I do not believe I was excessively over tightening). Anybody ever seen this? Could the casting on the regulator be faulty? I'm gonna have to swap out the regulator either way (which will be a nightmare) but was just wondering so as to avoid this in the future. I can recall one time that I had a brass 1/2" ball valve crack but never seen or thought it was possible for a regulator.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Often, the gas fitting is a flared fitting which doesn't need to be super tight. If it is a tapered thread, then yes, tight shouldn't be a big deal. If it's a flared fitting, it technically, doesn't need any pipe dope, but you could put a little on the flared face - none needed on the threads.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    DIY Junior Member TedSF's Avatar
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    The flared side of the 1/2" MIP by 1/2" flare fitting was not threaded into the regulator, was the normal 1/2" IP male threading into the 1/2" female inlet to the regulator.

  4. #4
    DIY Senior Member kreemoweet's Avatar
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    Regulators usually made of aluminum or some kind of pot metal = soft as hell = don't tighten like you would on steel. Watch out for the chintzy brass
    gas shutoffs too, I've had to repair a few of those that got split by plumbers tightening up a nipple too hard.

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