1. Product Overview
The Delta Trinsic 3-Way Shower Handle Diverter Trim Kit (Model T11859-BL) in Matte Black is designed to complement contemporary bathroom aesthetics. This trim kit allows for the control of water flow to multiple shower components, offering a versatile showering experience. It features a single-handle design for ease of use and is constructed for durability.
This product is ADA compliant, meeting standards for accessibility.

Image 1: Delta Trinsic 3-Way Shower Handle Diverter Trim Kit, Matte Black.
2. Important Considerations Before Installation
- Rough-In Valve: This product is a trim kit only. A compatible MultiChoice® Universal Rough-In Valve (recommended model R11000) must be purchased separately and installed behind the wall to complete the unit.
- Installation Thickness: For installations requiring additional thickness, an installation extension kit (model RP75137) is available and sold separately. This kit adds 1-inch to the maximum installation thickness.
Ensure all necessary components are acquired and the rough-in valve is correctly installed according to its specific instructions before proceeding with the trim kit installation.
3. Installation Instructions
Installation of the Delta Trinsic 3-Way Shower Handle Diverter Trim Kit requires a pre-installed MultiChoice® Universal Rough-In Valve. Refer to the installation manual provided with your rough-in valve for detailed instructions on preparing the valve for trim installation.
General Steps for Trim Installation:
- Ensure water supply to the shower is turned off.
- Remove any existing trim components if replacing an old unit.
- Install the escutcheon (wall plate) over the rough-in valve, securing it with the provided screws.
- Install the diverter cartridge into the rough-in valve body.
- Attach the diverter handle to the cartridge stem, ensuring proper alignment and functionality.
- Test the diverter functionality and check for leaks before sealing the installation.
For specific diagrams and detailed steps, consult the comprehensive installation guide included with your product packaging.
4. Operating Instructions
The Delta Trinsic 3-Way Diverter Trim Kit allows you to direct water flow to different shower components. The single handle provides three distinct positions:
- Position 1 (Individual): Directs water to the first shower component (e.g., a main showerhead).
- Position 2 (Individual): Directs water to the second shower component (e.g., a hand shower or body sprays).
- Position 3 (Shared): Directs water to both shower components simultaneously.
Rotate the handle to select the desired water flow position. The handle will click into place for each distinct setting.

Image 2: Diagram illustrating the three diverter settings for individual and shared water flow.
Demonstration Video:
Video 1: Official Delta Faucet demonstration of the Trinsic 3-Setting 2-Port Diverter Trim, showing its functionality and how to switch between water flow options.
5. Maintenance and Care
To maintain the finish and functionality of your Delta Trinsic diverter trim kit, follow these care guidelines:
- Cleaning: Clean the surface regularly with a soft, damp cloth. Avoid abrasive cleaners, harsh chemicals, or polishes that could damage the Matte Black finish.
- Avoid Scratches: Do not use abrasive sponges, steel wool, or other harsh cleaning tools that can scratch the surface.
- Water Spots: Wipe down the trim after each use to prevent water spots and mineral buildup, especially in hard water areas.
6. Troubleshooting
If you experience issues with your Delta Trinsic 3-Way Shower Handle Diverter Trim Kit, consider the following general troubleshooting steps:
- No Water Flow/Low Pressure: Ensure the main water supply to the shower is fully open. Check the rough-in valve for any obstructions or issues.
- Diverter Not Switching: Verify that the handle is correctly installed and aligned with the cartridge stem. If the issue persists, the diverter cartridge may need inspection or replacement.
- Leaks: Check all connections for tightness. Ensure the escutcheon is properly sealed against the wall. Leaks from within the wall may indicate an issue with the rough-in valve or its connections, requiring professional assistance.
For persistent problems or issues related to the internal rough-in valve, it is recommended to contact a qualified plumber or Delta Faucet customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | DELTA |
| Model Number | T11859-BL |
| Color | Matte Black |
| Material | Brass |
| Finish Type | Black |
| Number of Handles | 1 |
| Mounting Type | Wall Mount |
| Item Weight | 454 Grams (1 pound) |
| Product Dimensions | 4 x 4.44 x 4.44 inches |
| Style | Modern |
| Pattern | Diverter Only |
| Installation Method | Single Hole |
| Special Features | ADA-compliant |
| UPC | 034449838672 |
8. Warranty Information
The Delta Trinsic 3-Way Shower Handle Diverter Trim Kit is backed by a Lifetime Faucet and Finish Limited Warranty. This warranty covers defects in materials and manufacturing for as long as the original consumer purchaser owns the home in which the faucet was first installed. For full details and terms of the warranty, please refer to the official Delta Faucet warranty documentation or visit the Delta Faucet Store on Amazon.

Image 3: Lifetime Limited Warranty icon, signifying product quality and support.
9. Support and Contact
For further assistance, technical support, or to inquire about replacement parts, please contact Delta Faucet customer service. You can find contact information on the official Delta Faucet website or through the Delta Faucet Store on Amazon.





