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Shower System with Tub Spout Installation Guide

Jan 18,2024 | CASAINC

Step-by-Step Installation Guide for Shower System with Tub Spout

Adding a shower system with a tub spout to your bathroom can enhance functionality and aesthetics. Whether you're renovating your bathroom or just looking for an upgrade, installing a shower faucet with tub spout is a rewarding project. In this guide, we'll take you through the steps to successfully install a shower system with a tub spout.

wall-mounted shower system with tub spout


When you receive the product package, please first check the product and accessories list. If there are any discrepancies, don't hesitate to get in touch with Casainc customer service promptly. We will provide you with a satisfactory solution.

Regards the Casainc shower system with tub spout accessories list, please refer to the user manuals or check below:

  1. Pressure balanced diverter valve: includes valve, Face plate with seal joint, Diverter knob kit, Trim cap, Allen screw
  2. Handheld Shower Kit with Flexible Hose: includes Flexible hose, Hand shower holder, Hand shower
  3. Showerhead
  4. Shower arm and flange kit
  5. Bathtub spout

Before you start the installation process, please also prepare the following materials yourself:

  • Plumber's putty
  • Thread seal tape
  • L wrench
  • Allen wrench
  • Screwdriver
  • Electric drill
  • Connection pipes

Shower Sets Installation Steps

Step 1: Pipes Connection

Use pipes to connect each water outlet port of the control valve, for shower sets with the tub faucet, usually need to connect the hot water inlet, cold water inlet, bathtub spout, and handheld shower.

The installation dimension is only for reference, you can adjust it according to your bathroom size and showering preference.

Shower Sets Installation

Step 2: Leakage Test

Once the pipe connection is completed, remove the protective panel and cover, and open the cartridge. Flush the pipeline, then close the cartridge to assess the pressure resistance and sealing performance. Ensure there are no leaks by blocking each outlet pipe with plugs and opening the cartridge. Verify that the pipe joints are well-sealed and check the condition of the pipes under pressure to guarantee no leakage.

Shower Sets Installation

Note: Clean the water pipes before connecting to the supply pipes to prevent blockages.

Testing Purpose: Eliminate impurities and sludge in the pipeline to prevent clogging and maintain proper effluent functions.

Step 3: Verify Drilling Dimensions

Refer to the technical drawing for the required drilling size.

For instance, if the valve size is 5.3" x 6.7", the depth should be 1.8"-2.2". It's advisable to drill to a depth of 1.8" for a blank wall.

Drill the holes on the wall for the main body part, hot and cold water inlet pipes, and shower arm connection pipes based on the provided product dimension drawing. Connect the hot and cold water inlet pipes and the mixed water outlet pipe to the control valve and tighten with a wrench.

Note: Apply the plumber's putty under the plastic cover deck for proper sealing during installation.

Step 4: Wall Sealing

Utilize a parallel ruler to measure the flatness of the valve and the vertical wall surface. If the wall surface isn't flat, patch it to ensure the valve and vertical wall meet at an almost ideal 90-degree angle. Then proceed to lay the tile decoration.

Step 5: Control Valve Installation

  • Remove the protective panel and cover.
  • Connect the decorative panel and the handle to the control valve.
  • Adjust the direction of the water separator handle according to the right angle.

Step 6: Installation and Testing

Securely install the showerhead, tub spout, and hand shower. Then test all the functions of the Complete Shower System.

Congratulations! You've successfully installed the shower system with a tub spout. Enjoy the improved bathing experience and the upgraded aesthetics of your bathroom. If you encounter any challenges during the installation process, feel free to reach out to us for assistance.


If the cartridge is worn out and causing leakage, turn off the water source. Remove the handle, panel, and decorative cover sequentially. Use a wrench to remove the gland, then take out the cartridge and copper sleeve. Repair or replace the new cartridge, and reinstall it following the sequence.

Shower System with Tub Faucet Install Video