When it comes to bathroom renovations or repairs, upgrading your shower valve can significantly enhance your daily shower experience. If you’re considering this project, utilizing Uponor PEX and press adapters can streamline the process and ensure a reliable and efficient installation.

In this blog, we will guide you through the steps of changing out a shower valve using Uponor PEX and press adapters, providing you with valuable insights and expert advice to achieve a successful outcome.

Gather the Necessary Tools and Materials

Before embarking on the project, it’s essential to gather all the required tools and materials. These may include Uponor PEX tubing, press adapters, a press tool, pipe cutters, a valve removal tool, adjustable wrenches, and thread sealant. Ensuring you have the right tools and materials on hand will make the installation process smoother and more efficient.

Turn Off the Water Supply

Before starting any plumbing project, always turn off the water supply to the shower. Locate the main water shut-off valve for your home and close it to prevent water flow to the shower. It’s also a good idea to open a nearby faucet to release any remaining water pressure.

Remove the Old Shower Valve

To remove the old shower valve, use a valve removal tool or adjustable wrenches to disconnect the water supply lines. Carefully loosen and remove any screws or fasteners securing the valve to the wall. Once detached, pull the old valve out of the wall, taking care not to damage the surrounding plumbing or tile.

Prepare the Uponor PEX Tubing

Measure and cut the Uponor PEX tubing to the appropriate length needed to connect the new shower valve. Use pipe cutters specifically designed for PEX tubing to ensure clean and accurate cuts. Deburr the cut ends of the tubing to remove any rough edges that could hinder proper sealing.

Install the Press Adapters

Slide the press adapters onto each end of the cut Uponor PEX tubing. Ensure that they are securely seated and aligned with the tubing. The press adapters allow for a quick and reliable connection to the shower valve, eliminating the need for traditional soldering or threading.

Connect the Uponor PEX Tubing to the Shower Valve

Align the press adapters with the corresponding inlet and outlet ports on the new shower valve. Apply slight pressure to ensure a snug fit. Position the press tool over the press adapter, and using the appropriate size jaws, press the adapter firmly until the tool indicates a proper connection. Repeat this process for each end of the Uponor PEX tubing.

Secure the Shower Valve in Place

Once the Uponor PEX tubing is connected to the shower valve, secure the valve in place using the provided fasteners or screws. Ensure that the valve is level and properly aligned before tightening the fasteners. This step is crucial to ensure a secure and stable installation.

Test the New Shower Valve

Turn on the main water supply to your home and open the newly installed shower valve. Check for any leaks or drips around the connections. If necessary, make minor adjustments to achieve a watertight seal. Allow the water to flow for a few minutes to flush out any debris that may have accumulated during the installation.


Changing out a shower valve using Uponor PEX and press adapters offers a reliable and efficient solution for upgrading your shower experience. By following the steps outlined in this blog, you can confidently tackle this project and enjoy the benefits of a properly installed shower valve. Remember to gather the necessary tools and materials, turn off the water supply, remove the old valve, prepare the Uponor PEX tubing,

install the press adapters, connect the tubing to the shower valve, secure the valve in place, and test for any leaks. By utilizing Uponor PEX and press adapters, you’ll achieve a durable and dependable installation that will enhance your daily shower routine for years to come.