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I want to put another water line onto an existing 3/4 galv. pipe. To put a "T" in the middle will I have to weld it or is there left and right threads so you can tighten the middle pipe turning in one direction and have it draw the two joints together.

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The problem you are faced with is that galvanized pipe is put together as a "progressive" process. The easiest action you can take is to cut the galvanized pipe where you want the T and back out both pieces of pipe from their respective joints. Reassemble and use a union coupling to finish the connections. An alternative would be to replace the section of the line where you want the T to be with copper pipe, using a dielectric union at both ends where you connect back into the galv. pipe. You have to solder the connections, but it might be easier.

Posted on Sep 12, 2010

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