During my basement reno, I discovered a small gas leak at one of the
pipe threads in my gas line. Actually I suspected for some time there
was a leak in this particular spot, but could never pinpoint it
because of the closed ceiling. Now that the ceiling is gone, I have
found the problem.
So rather than try to take the cheap way out and try to seal it from
the outside with epoxy, I am going to take everything apart, reseal
it, then put it back. Its 3/4 black pipe.I want to do this once and do
it right. What is the best way to seal the threads? I have both pipe
dope, and yellow teflon tape for gas.
It's my understanding that the Teflon tape is not meant to be a sealant.
It's purpose is to reduce the friction in joining threaded pipes so that
they screw together more completely. The depth of the pipe in the fitting
determines the seal, not the tape.
This notion seems semi-confirmed when you take apart a pipe and a fitting
that's had Teflon tape used on the previous joint. The tape is usually
OMG! Let me get this right. You smelled a gas leak, but because
a finished basement ceiling was involved, you just waited until you
finally renovated the basement?
Suppose it involved the kitchen ceiling, would you have waited 15
until you renovated the kitchen?
Well it was more like a couple of days, but I see your point.
Having said that, while I am disassembling everything, is there any
harm installing another shut-off valve? This way in the future if I
have to do any work, I do not have to go to my gas main and shut down
the whole house. With this new valve, I can still keep the furnace
and hW heater going. Downstream of this new valve would be my stove
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