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Using old Water Pipe as gas Pipe?

Posted: Fri Oct 06, 2017 10:34 pm
by daihot
Hi
I need to take out a back boiler in living room and fit a wall hung boiler in the utility room at rear of terraced house. Since the supply and return water pipes to that boiler will become unused, can one of the pipes be used legally to supply the gas to the new boiler, after disconnecting at the hot water tank and extending to the new boiler, and subject to any testing etc.
Any help would be appreciated.thanks.