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Old 01-13-2009, 08:41 AM   #1
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Tee-ing into gas (black) pipe


For our laundry room move we need to run new gas (black) pipe. We're going to hook into the 3/4 run that currently goes to the hot water heater and then onto the old dryer location. Where we want to hook in is a run of about 5' w/out any union, and is the middle of the run. Am I correct that there's no way I can unscrew that pipe, since unscrewing one end will screw in the other end? In that case, I assume I simple cut that run of pipe and then unscrew each end (after bleeding the system of gas, obviously.) I'd then just put in new pipe w/the tee where I need it and use a union to hook the current system back together.

Just want to make sure I'm not missing something stupid.

Thx,
-Walden

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Old 01-13-2009, 09:03 AM   #2
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Tee-ing into gas (black) pipe


Nope, you've got it.

Be sure that your gasline is adequately sized for whatever you're adding to the line, and be sure to shut off the valves to all the appliances and airtest the line prior to turning the gas back on. This work of course requires a plumbing permit.

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Old 01-13-2009, 09:11 AM   #3
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Tee-ing into gas (black) pipe


Sorry, yes, pressure test at the end, I was thinking about cutting into the feed pipe (beginning). As for test, 15psi for 15 minutes should be good, no?
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Old 01-13-2009, 09:46 AM   #4
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Tee-ing into gas (black) pipe


Code says twice the working pressure, which is only 1/2psi! A 1 psi airtest is pretty much useless for finding leaks so most inspection departments require 10 or 15 psi for 15 minutes.
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