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Fred 01-26-2007 12:25 AM

Use of coupling fitting on gas pipe
 
I want to connect a 12"x3/4" galvanized pipe to a coupling, then a 90 degree elbow then a 24" pipe between an exiting gas meter and an existing length of pipe that goes to a stove.

Is it permissable/advisable to use a regular galvanized coupler on a gas pipe system? I am using special (yellow) gas pipe tape on the threads. Are there any other special requirements?

Aloha from Hawaii

mdlbldrmatt135 01-26-2007 05:17 AM

IIRC All gas Connections should be Black pipe the Glavinizing reacts with the gas

troubleseeker 01-27-2007 09:08 PM

Quote:

Originally Posted by Fred (Post 31272)
I want to connect a 12"x3/4" galvanized pipe to a coupling, then a 90 degree elbow then a 24" pipe between an exiting gas meter and an existing length of pipe that goes to a stove.

Is it permissable/advisable to use a regular galvanized coupler on a gas pipe system? I am using special (yellow) gas pipe tape on the threads. Are there any other special requirements?

Aloha from Hawaii

Gas lines should be black iron according to code. Any moisture will combine with the sulfur in the gas to form sulfuric acid which will atack the zinc on the galvanized pipe. I guess it depends on the inspector though, because I have seen galvanized pass inspection.

majakdragon 01-28-2007 06:13 AM

Best bet is to check Local Codes. Galvanized pipe on a gas line can cause clogs in fixture orfices. The galvanized coating can flake off causing this. Many States do not allow galvanized in gas lines while some do.


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