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how to repair radiaint floor pipe

How do i replace a section of my radiant floor heating pipe. It is a old house built in 1950, I believe the pipe is galvanized iron pipe, the pipe was buried in concrete in between the floors. I have the section exposed and can cut out the bad section but how do I replace the pipe with new. Can galvanized pipe be solder? The pipe ends are not threaded. Is there a compress type fitting that I can use? Can I use a flexible tube for the new section? The zone on this system does not have shutoff valves so I cannot close this zone only. Attached are photo of the problem. Thanks bob

Re: how to repair radiaint floor pipe

Wouldn't touch it with a 10' pole. Could try a dresser coupling but you better start thinking about putting some dollars away for a new system.

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