Replacing a section of copper pipe


Old 01-22-17, 08:13 PM
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Replacing a section of copper pipe

hi there,

any tips for for replacing/repairing a section of copper pipe with couplers.

so i have to replace a section of 3/4" copper pipe. i know how to solder and so i was going to use two 3/4" copper couplers on each end.

let me know if i'm doing something wrong.

i cut out a 4 inch section. each coupler has a 7/8" depth to it. so is the trick to solder together a section of copper pipe and coupler on each end to total something like 4.5 inches and just accept that the ends of the repair section will only have about 1/4 inch depth into the coupler? otherwise i can't imagine squeezing/bending copper pipe to fit a repair section of 5.75 into a gap of 4 inches.

i can't think of a way to get 7/8" depth on each coupler when the plumbing is in line.

Old 01-22-17, 08:47 PM
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When replacing a piece of inline copper pipe..... you use no-stop couplers. The no-stop coupler slides completely over the pipe to allow the pipes to touch. All ends must be carefully cleaned and filed so that the couplers slide both directions easily.

In the diagram it shows the two different couplers. You need to mark the copper pipe with the fittings centered so that when you have the piece in with the couplers you'll know they are centered.

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Old 01-22-17, 09:34 PM
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thanks pete! that makes perfect sense. i knew there was a simple solution. lol
Old 01-23-17, 09:03 AM
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You can use one coupling – called a repair sleeve – like these, which is used for bigger gaps like yours:

600-306 - Sioux Chief 600-306 - 3/4" x 6" Sweat Full-Slip Copper Repair Coupling

and do it like this:

How to Repair a Leaking Copper Pipe | The Family Handyman

In your case if your gap is 4” you would cut the repair coupling to 5”.

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