How To Cap A Pex Water Line

One of the many benefits of PEX piping is that it can be capped easily and quickly with a PEX fitting. The steps below will show you how to cap a PEX water line.

How To Cap A Pex Water Line

There are a few ways to cap a PEX water line. One way is to use a PEX crimp tool to crimp a PEX fitting onto the end of the line. Another way is to use a PEX clamp to attach a PEX fitting to the end of the line.

Required tools: -Pex crimping tool -Pex cutters -Pex pipe -Teflon tape -Wrench -Screwdriver Required material: -PEX water line

  • Clean the end of the water line that will
  • Use a pipe cutter to cut the water line where you want to cap it
  • Run the water line to be capped under cold water for several minutes to clear it of any debris

-The water line should be capped with a pex fitting -A pex fitting has a barb that inserts into the pipe and a threaded end that screws onto a fitting -If using a compression fitting, make sure the threads are clean and coated with teflon tape before assembly -Hand tighten the fittings until they are snug

Frequently Asked Questions

Can You Use Sharkbite Caps On Pex?

SharkBite caps will not fit onto PEX tubing. The SharkBite fittings are designed to work with copper tubing and CPVC piping.

How Do You Cap A Water Line Under Pressure?

The easiest way to cap a water line under pressure is to use a union fitting. A union fitting allows you to easily disconnect the line without having to release any pressure.

How Do You Put A Sharkbite Cap On A Pex?

There are a few ways to do this, but the most common is to use a SharkBite cap. You simply remove the end of the PEX tube and slide the SharkBite cap on. Then, you reattach the end of the tube.


To cap a pex water line, use a clamp to secure the fitting to the pipe. Make sure that the clamp is tight against the pipe so that there is no leakage.

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