Scrape away any burrs from the copper pipe and rub a drop of dishwashing liquid on each end of the copper to act as a lubricant.
Copper to cpvc compression fitting.
Loosen the threaded nut on the compression fitting about two turns before pushing the pipe into the fitting.
Warning avoid eating smoking or any other hand to mouth contact while soldering copper or using cpvc solvent and glue.
Wrot copper cup x fipt adapter fitting.
Cpvc compression fittings are also available for in line connections when adding a new service to an existing line.
Cut the cpvc pipe at the point where you want to install the compression fitting with a tubing cutter to produce a clean square cut.
This can be a problem when joining cpvc to copper especially when using threaded connections.
You can connect pvc or cpvc to copper in several ways.
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My experience with cpvc is not good in fact i hate any plastic pipe to include pex.
Cpvc lead free slip x copper alloy compression union 1 model c4733 7 lf.
Here s a video on how to change back to copper no matter the make up i.
Slip the compression nut from the compression fitting onto the pipe then slip on the compression ring.
Slide both pieces down so they are 1 inch or so from the end of the pipe.
The rubber washer should flex enough to keep the connection sealed.
One common method is to solder a female threaded fitting onto the copper pipe screw in a male threaded plastic fitting and finish up by gluing plastic pipe to the plastic fitting.
Sharkbite pvc fitting uip4008a inch x inch cts pvc connector to copper pex cpvc hdpe or pe rt for potable water 4 8 out of 5 stars 97 12 54 12.
One option is to use union adapters.
This isn t the best way though because you can t tighten the fitting if it leaks.
Bevel the edges of the pipe with a file.
Fit the compression fitting onto the pipe or fit the pipe into the fitting as applicable until the pipe stops inside the fitting.