Introduction
The Moen M-CORE 3-Series 1-Handle Valve Trim Kit (Model UTS3711BN) is designed to provide a streamlined and functional showering experience. The M-CORE valve system simplifies installation and offers enhanced functionality with various style options. This system is engineered to make installation efficient for professionals and to provide homeowners with flexibility in showering functionality and design for both new construction and renovation projects. This manual provides essential information for the proper setup, operation, and maintenance of your Moen M-CORE valve trim kit.

Image: Overview of the Moen M-CORE Universal Valve System.
Key Features
- Brushed Nickel Finish: Provides a lightly brushed, warm-grey metallic look.
- Pressure-Balancing Capability: M-CORE valves, with 3-Series trim, control temperature fluctuations during water pressure changes.
- Volume Control: Allows adjustment of water flow for greater functionality.
- Versatile Design: M-CORE's adaptability allows for functionality and style changes without removing or changing the valve.
- Streamlined Installation: Features an integrated mounting bracket for direct valve securing to a brace.
- Integrated Test Cap: Offers precise temperature limit stop adjustment and allows flushing/testing without cartridge removal.
- Durable Construction: Built to last and backed by Moen’s Limited Lifetime Warranty.

Image: The Moen M-CORE 3-Series Trim, highlighting its design.
Setup and Installation
This trim kit requires the Moen M-CORE Mixing Valve U140 (sold separately) for complete installation. Ensure you have the correct valve before proceeding.
For detailed, step-by-step installation instructions, please refer to the official PDF manual provided by Moen:
Download Installation Manual (PDF)
Installation Overview
The M-CORE system is designed for simplified installation. The integrated mounting bracket secures the valve directly to a brace, streamlining the process. The test cap allows for flushing and testing the system without needing to install the cartridge immediately.

Image: The M-CORE valve body, which is required for this trim kit.

Image: Illustrates the improved style of the trim kit with no visible screws or gaps after installation.
Installation Video Guide
Video: A comprehensive guide on installing the Moen M-CORE valve system. This video demonstrates the installation process for the valve and trim kit components.
Operating Instructions
The Moen UTS3711BN trim kit provides intuitive control over your shower's water temperature and volume.
Temperature Control
The M-CORE valve system features pressure-balancing technology to maintain a consistent water temperature, preventing sudden hot or cold surges. Rotate the handle to adjust the temperature to your preference. The handle typically rotates from cold to hot, with a stop to prevent scalding.
Volume Control
This 3-Series trim kit includes a volume control feature. Rotate the handle to increase or decrease the water flow rate. This allows you to customize your showering experience and conserve water when a full flow is not required.
Features Overview Video
Video: An overview of the key features and benefits of the Moen M-CORE system, including temperature and volume control.
Maintenance
Cleaning the Finish
To preserve the Brushed Nickel finish of your Moen trim kit, clean it regularly with a damp cloth and a mild liquid dishwashing soap. Avoid using abrasive cleaners, harsh chemicals, or polishes, as these can damage the finish and void your warranty.
Cartridge Access and Service
The M-CORE valve system is designed for easy maintenance. The integrated test cap allows for flushing and testing the system without removing the cartridge. If cartridge replacement or other internal service is required, refer to the detailed installation manual for specific instructions or consult a qualified plumber.
Troubleshooting
If you encounter issues with your Moen M-CORE 3-Series 1-Handle Valve Trim Kit, consider the following common troubleshooting steps:
Low Water Flow
- Ensure the volume control on the trim kit is fully open.
- Check the main water supply to ensure adequate pressure.
- Inspect the showerhead (if applicable) for any clogs or debris.
Temperature Fluctuations
- Verify that the M-CORE valve was installed correctly and the temperature limit stop is set appropriately.
- Ensure no other water-consuming appliances (e.g., washing machine, dishwasher) are running simultaneously, which could cause pressure drops.
For persistent issues that cannot be resolved with these steps, it is recommended to contact a qualified plumber or Moen customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Model Number | UTS3711BN |
| Brand | Moen |
| Material | Metal |
| Exterior Finish | Brushed Nickel |
| Item Dimensions (L x W x H) | 10.5 x 6.13 x 6 inches |
| Item Weight | 1.9 pounds |
| Inlet Connection Size | 6 inches |
| Inlet Connection Type | FNPT |
| Outlet Connection Type | MNPT |
| Number of Ports | 3 |
| Valve Type | Ceramic Disc |
| Specification Met | ADA |
| Included Components | Mixing Valve Cartridge, Temperature Limit Stop, Trim Kit |
| UPC | 026508322017 |
Warranty and Support
Warranty Information
The Moen UTS3711BN 90 Degree M-CORE 3-Series 1-Handle Valve Trim Kit is covered by Moen's Limited Lifetime Warranty. This warranty ensures that your product will be free from defects in material and manufacturing workmanship for as long as the original consumer purchaser owns their home. For complete details regarding warranty coverage, terms, and conditions, please refer to the documentation included with your purchase or visit the official Moen website.
Customer Support
Should you require further assistance, have questions about installation, operation, or need to inquire about replacement parts, please contact Moen customer service. You can find up-to-date contact information, FAQs, and additional resources on the official Moen website:







