Easier Plumbing with PEX
(Page 5 of 5)
June/July 2006
By Steve Maxwell
The do-it-yourself advantages of PEX piping are a clear indication that wisely chosen newer building materials can be a big help for people with a heart for self-reliance. All that’s required is a bit of knowledge about the materials and methods of building, faith in ourselves and initiative to get the job done.
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Connecting to Copper
You will need a special fitting when connecting PEX lines to existing copper supply pipes. One end of this fitting is soldered into either half- or three-fourths-inch copper, and the other end includes O-rings and a profile that accepts a PEX line. (See photo.)
The O-rings must be removed before you solder the fitting. To remove the soft O-rings, squeeze them with two fingers to create a bulge in the rubber that you can grab with your other hand. (The O-rings can become damaged if you try to grip them with pliers or a screwdriver.) After the O-rings have been removed, clean the copper joint with sandpaper, brush on a coat of soldering flux, heat it up and then apply solder. Only when the metal is completely cool can you safely reinstall the O-rings and complete the joint.
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