How to sweat copper pipe
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Old 11-06-2011, 03:24 AM   #1
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Default How to sweat copper pipe

First step: is to take a piece of sandcloth and clean the end of pipe

Second step: is to ream the inside of the end you just cleaned with sandcloth or a reaming tool.

Third step: is to take ur copper fitting and clean the inside of the hubs with sandcloth.

Fourth step: is to apply flux to ur clean ends of pipe and hubs then slide hub on to pipe.

Fifth step: apply torch flame to the hub of the fitting (not the pipe) and with other hand take ur solder and apply tip to the seam of fitting. It takes a couple sec for the solder to flow all away around the hub.

Six step: take a wet rag to ur pipe after u finish with ur sweat. Then when the pipe is cooled wipe all the existing flux off and check fitting to make sure the solder took all away around the fitting

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Old 11-06-2011, 06:10 AM   #2
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first step remove all water.

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Old 11-06-2011, 01:13 PM   #3
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Use a DRY rag to wipe after solder drips....it makes for neater more professional appearance/finished product.

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Old 11-06-2011, 10:42 PM   #4
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Quote:
Originally Posted by KidsWithGuns View Post
First step: is to take a piece of sandcloth and clean the end of pipe

Second step: is to ream the inside of the end you just cleaned with sandcloth or a reaming tool.

Third step: is to take ur copper fitting and clean the inside of the hubs with sandcloth.

Fourth step: is to apply flux to ur clean ends of pipe and hubs then slide hub on to pipe.

Fifth step: apply torch flame to the hub of the fitting (not the pipe) and with other hand take ur solder and apply tip to the seam of fitting. It takes a couple sec for the solder to flow all away around the hub.

Six step: take a wet rag to ur pipe after u finish with ur sweat. Then when the pipe is cooled wipe all the existing flux off and check fitting to make sure the solder took all away around the fitting
I am a master plumber and could not have said it better. The only thing I would add, is that plumbing solder and flux is not the same as electrical solder, and you will never solder a copper pipe with any water in it.
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Old 11-07-2011, 12:14 AM   #5
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Thank you! I'm a fourth year plumbing apprentice about to take my IL plumbing test to get my license.

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Old 11-07-2011, 12:20 AM   #6
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Thank you! I'm a fourth year plumbing apprentice about to take my IL plumbing test to get my license.

Good luck!
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Old 11-07-2011, 12:30 AM   #7
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I use Pex SharkBite Fittings.

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Old 11-07-2011, 12:36 AM   #8
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Quote:
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you will never solder a copper pipe with any water in it.
white bread (no crust) can be used as a temp water absorber.

Strangest leak I ever repaired, in the middle of a pipe. 20 year old house, leak right in the middle of a pipe. Piece of debris in the pipe.

Luckiest repair I ever made, drain pipe going into a cast iron stack, very little to grab on to, but it easily turned. What was even better, I had planned to replace that particular cabinet anyway, and the leak was in the wall behind the cabinet
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Old 11-08-2011, 05:22 AM   #9
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You left out,
Apply the flame to the backside of the pipe and put the solder in at the front.

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Old 11-08-2011, 05:41 AM   #10
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Great post here, I have soldered my share of electrical fittings but never any pipe and my house being builit in 1925 means lots of copper fittings.

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