Step-by-Step Guide to Installing Your Own 3-Way Diverter Shower System

3-Way Diverter Shower System


Transforming your daily shower experience can be as simple as upgrading to a 3-way diverter shower system. This luxurious addition not only enhances the functionality of your bathroom but also adds a touch of elegance. In this comprehensive guide, we'll navigate through the installation process of a 3-way diverter shower system. Whether you're a DIY enthusiast or a first-time installer, our step-by-step approach will empower you to successfully set up your new shower system with ease and confidence.

Preparation: Tools and Materials 

Before embarking on this exciting project, it's crucial to gather all the necessary tools and materials. You'll need an adjustable wrench, plumber's tape, a screwdriver or Allen wrench, and, of course, the 3-way diverter shower system kit. Ensure you have a well-lit workspace and a clear area to lay out your tools and components. Safety is paramount, so remember to shut off the main water supply to your home to prevent any accidental flooding. This preparatory step sets the foundation for a smooth installation process.

Step 1: Removing Existing Fixtures 

The first step in your installation journey involves removing the existing shower fixtures. Start by unscrewing the shower arm and handle using your wrench. Approach this task with care to avoid damaging the wall or the fixtures themselves. If your current setup includes a tub spout, gently remove it by locating and unscrewing the setscrew or threaded adapter. It's essential to keep these components in good condition, as you might need them for future use or reference. This step not only clears the way for your new system but also provides an opportunity to inspect your existing plumbing for any signs of wear or damage.

Step 2: Installing the Threaded Adapter 

With the old fixtures removed, it's time to install the threaded adapter. This small yet vital component connects the diverter to your water supply line. Start by cleaning the supply line threads and wrapping them with fresh plumber's tape. This ensures a snug, leak-free connection. When screwing the adapter onto the supply line, be precise and cautious. Over-tightening can damage the threads and lead to future plumbing problems. This step is a blend of meticulous attention to detail and patience, setting the stage for a secure and efficient water flow to your new shower system.

Step 3: Attaching the Valve Body 

The valve body is the heart of your diverter system. Carefully position it on the wall, aligning it with the manufacturer's recommended height and placement guidelines. Use a level to verify its alignment, as even a slight tilt can result in improper water flow or leaks. Secure the valve body firmly with the provided mounting screws or nuts, ensuring it's immovable and stable. This step is a testament to precision engineering, as a well-positioned valve body guarantees optimal functionality and longevity of your shower system.

Step 4: Connecting Water Lines 

Next, identify the hot and cold water supply lines and connect them to the appropriate inlet and outlet ports on the valve body. This is where your plumbing skills truly shine. Follow the manufacturer's guidelines for the type of connection required – whether it's soldering or using compression fittings. Ensure each connection is tight and secure, double-checking for any potential misalignments or loose fittings. This meticulous process is crucial in establishing a robust and reliable water flow for your shower system.

Step 5: Testing for Leaks 

With all connections made, it's time for the most crucial step – testing for leaks. Gradually turn on the hot and cold water supply lines and carefully observe the connections and the valve body. Look for any signs of water leakage, paying close attention to the joints and seals. If you spot a leak, turn off the water supply and tighten or reseal the problematic connection. This final test not only ensures the integrity of your installation but also provides peace of mind that your shower system is safe and leak-free.


Congratulations! You've successfully installed your new 3-way diverter shower system. This DIY project not only adds value to your home but also elevates your daily shower experience. Remember, regular maintenance is key to preserving the system's performance. If you encounter any challenges during the installation, don't hesitate to seek professional assistance. Enjoy the luxury and flexibility of your upgraded shower, and take pride in the knowledge and skills you've gained through this rewarding DIY journey.