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.
Copper to cpvc compression fitting.
Warning avoid eating smoking or any other hand to mouth contact while soldering copper or using cpvc solvent and glue.
Cpvc lead free slip x copper alloy compression union 1 model c4733 7 lf.
Model 1603341 15 67.
Plastic and metal expand and contract at different rates.
Bevel the edges of the pipe with a file.
One option is to use union adapters.
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.
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.
Wrot copper cup x fipt adapter fitting.
This isn t the best way though because you can t tighten the fitting if it leaks.
Cpvc compression fittings are also available for in line connections when adding a new service to an existing line.
Lead free copper and cpvc cts silicon alloy slip x soldier transition union 3.
Fit the compression fitting onto the pipe or fit the pipe into the fitting as applicable until the pipe stops inside the fitting.
Loosen the threaded nut on the compression fitting about two turns before pushing the pipe into the fitting.
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.
Push on a cpvc compression fitting.
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.
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.