1. Introduction and Overview
The TOTO TBV03404J is a high-quality wall-mounted thermostatic mixer faucet designed for bathroom use. It features a 170mm spout and the innovative Comfort Wave shower with three distinct spray modes. This faucet is engineered to provide both water-saving efficiency and a comfortable, stimulating shower experience. Its sleek design minimizes gaps and steps, making it easy to clean and maintain.
Key features include:
- Comfort Wave shower with 3 spray modes (plated finish).
- Thermostatic control for stable water temperature.
- Easy-to-clean design with reduced gaps.
- Wide lever handle for effortless operation.
- Insulated faucet body to prevent burns.
2. Safety Information
Please read all safety instructions carefully before installation and use to prevent injury or damage to the product.
- Professional Installation Recommended: For optimal performance and safety, installation should be performed by a qualified plumber.
- Water Supply Shut-off: Always turn off the main water supply before attempting any installation, maintenance, or repair.
- Hot Water Safety: The faucet body features an insulated structure, designed to prevent burns even if touched during use. However, always exercise caution when adjusting hot water temperatures.
- Water Pressure: Ensure your water supply meets the specified pressure requirements. Minimum required water pressure is 0.07 MPa (dynamic) and maximum is 0.75 MPa (static). For comfortable use, approximately 0.2 MPa pressure is recommended.
- Children: Supervise children when they are near the faucet to prevent misuse or accidents.

This image shows the TOTO TBV03404J thermostatic mixer faucet, highlighting its sleek design and the insulated body feature that ensures safety by preventing the surface from becoming too hot to touch during use.
3. Package Contents
Please verify that all the following items are included in your package:
- TOTO TBV03404J Thermostatic Mixer Faucet Unit
- Instruction Manual
- Warranty Card
- Shower Hose (1.6 meters)
- Shower Hooks (x2)
4. Setup and Installation
This section provides general guidance for installing your TOTO TBV03404J faucet. For detailed steps, always refer to the included instruction manual and consult a professional plumber.
- Prepare the Installation Area: Ensure the wall surface is clean, level, and structurally sound to support the faucet. Turn off the main water supply to your bathroom.
- Mounting Points: Identify and mark the mounting points on the wall according to the technical drawing. The faucet is designed for 2-hole wall mounting.
- Connect Water Lines: Connect the hot and cold water supply lines to the faucet's inlets. Ensure all connections are secure and watertight.
- Secure the Faucet: Mount the faucet body to the wall using the provided hardware. Ensure it is level and firmly attached.
- Install Shower Hose and Head: Connect the shower hose to the faucet's outlet and then attach the showerhead. Install the shower hooks at a convenient height.
- Test for Leaks: Slowly turn on the main water supply and check all connections for leaks. Operate the faucet to ensure proper water flow and temperature control.

This technical drawing provides detailed dimensions, connection points, and installation guidelines for the TOTO TBV03404J faucet, including water pressure requirements and safety notes.
5. Operation
Operating your TOTO TBV03404J faucet is intuitive, designed for ease of use and comfort.
5.1. Water Flow and Temperature Control
- Flow Control: Use the main lever handle to turn the water on or off and to adjust the water flow intensity.
- Temperature Control: The thermostatic knob allows you to set your desired water temperature. Once set, the faucet will maintain this temperature, even if water pressure fluctuates.
5.2. Switching Between Spout and Shower
The wide lever handle on the faucet body allows for easy switching between the main spout and the showerhead.
- To activate the main spout, position the lever accordingly.
- To activate the showerhead, move the lever to the shower position. This can be done easily even with wet hands.

The image illustrates the ergonomic wide lever handle of the TOTO TBV03404J faucet, designed for easy operation even with wet hands, allowing seamless switching between the shower and spout functions.
5.3. Shower Modes
The Comfort Wave showerhead offers three distinct spray modes for a personalized showering experience. Switch between modes using the button located on the showerhead handle.
- Comfort Wave: A balanced spray that combines water saving with a comfortable, stimulating sensation.
- Active Wave: Provides a more invigorating and refreshing spray.
- Warm Pillar: Delivers a gentle, enveloping stream for a soothing experience.

This graphic displays the three distinct spray patterns offered by the TOTO TBV03404J showerhead: Comfort Wave for water saving and stimulation, Active Wave for invigorating sensation, and Warm Pillar for a gentle, enveloping warmth.

A close-up of the TOTO TBV03404J showerhead, illustrating the button on the handle that allows users to easily switch between the Comfort Wave, Warm Pillar, and Active Wave spray modes.
6. Maintenance
Regular cleaning and maintenance will ensure the longevity and optimal performance of your TOTO TBV03404J faucet.
- Cleaning the Faucet Body: The faucet's sleek design with reduced steps and gaps makes it easy to wipe clean. Use a soft cloth and a mild, non-abrasive cleaner. Avoid harsh chemicals, abrasive pads, or acidic cleaners, as these can damage the chrome finish.
- Cleaning the Showerhead: Periodically clean the nozzles of the showerhead to prevent mineral buildup, which can affect spray patterns. Most showerheads have flexible nozzles that can be wiped clean. For stubborn deposits, a solution of vinegar and water can be used.
- Check for Leaks: Regularly inspect all connections for any signs of leaks. Address any leaks promptly to prevent water damage.
7. Troubleshooting
If you encounter any issues with your TOTO TBV03404J faucet, refer to the following common troubleshooting tips. For complex problems, contact a qualified professional.
| Problem | Possible Cause | Solution |
|---|---|---|
| Low Water Pressure | Partially closed stopcock, clogged aerator/showerhead, low main water pressure. | Ensure stopcocks are fully open. Clean aerator/showerhead nozzles. Check main water supply pressure. |
| Water Temperature Fluctuations | Inconsistent hot/cold water supply, thermostatic cartridge issue. | Ensure stable hot and cold water supply. If problem persists, professional inspection of thermostatic cartridge may be needed. |
| Leaks from Connections | Loose connections, worn seals/gaskets. | Tighten connections carefully. Replace any damaged seals or gaskets. |
| Difficulty Switching Shower Modes | Mineral buildup in showerhead button mechanism. | Clean the showerhead and button area to remove any mineral deposits. |
8. Specifications
| Brand | TOTO |
| Model Number | TBV03404J |
| Product Dimensions | 27 x 29.7 x 200 cm |
| Product Weight | 3.3 kg |
| Color | Chrome |
| Material | Metal |
| Mounting Type | Wall Mount |
| Finish Type | Chrome |
| Recommended Use | Bathroom |
| Showerhead Type | Comfort Wave (Plated, 3-Mode) |
| Minimum Water Pressure (Dynamic) | 0.07 MPa |
| Maximum Water Pressure (Static) | 0.75 MPa |
| Recommended Water Pressure | Approx. 0.2 MPa for comfortable use |
| Water/Hot Water Saving Performance | Hot water saving B1, Hot water saving B |
| Included Accessories | Instruction Manual, Warranty Card, Shower Hose 1.6M, Shower Hooks x2 |
9. Warranty and Support
Your TOTO TBV03404J Thermostatic Mixer Faucet comes with a warranty to ensure your peace of mind.
- Warranty Period: This product is covered by a 2-year warranty from the date of purchase. Please refer to the warranty card included in your package for specific terms and conditions.
- Customer Support: For any questions, technical assistance, or warranty claims, please contact TOTO customer service or your authorized dealer. Keep your proof of purchase and warranty card readily available.





