Watts Brass Tubular LF1170M2-UT 3/4 Thermostatic Mixing Valve

Product Description

The WATTS BRASS TUBULAR LF1170M2-UT 3/4 is a 3/4-inch lead-free thermostatic mixing valve designed for point-of-origin hot water temperature control in domestic hot water systems. It reduces the temperature of the hot water supply before it reaches fixtures, protecting against scalding. The valve uses a double throttling design that simultaneously modulates hot and cold water flow to deliver a sensitive, stable response to changes in incoming water temperature. The bronze body and female pipe thread connections make it a durable, code-ready choice for licensed plumbers working on residential and light commercial domestic hot water distribution. Maximum working pressure is 150 psi and maximum temperature rating is 200 degrees F.

This valve is installed at the point of origin in domestic hot water systems where temperature regulation is required. It is well-suited for residential water heater outlets, recirculation systems, and light commercial applications where scald protection and consistent delivery temperature are required. The unit ships in a package quantity of 12, making it a practical stocking item for plumbing contractors and supply houses. Connections are female pipe thread, compatible with standard threaded pipe installations. A locking safety cap with an allen wrench is included to prevent unauthorized adjustment of the set temperature.

Key Features

• Lead-free bronze body construction meets lead-free compliance requirements for potable water systems
• Double throttling design provides sensitive, responsive mixing of hot and cold water supply
• Restricts water flow to a trickle upon loss of cold water supply, providing an additional layer of scald protection
• Female pipe thread connections for straightforward integration into threaded piping systems
• Locking safety cap with allen wrench prevents tampering with the temperature set point
• ASSE 1017 Listed and CSA B-125 Certified for use in domestic hot water temperature control applications

Compatibility

Designed as an OEM-style thermostatic mixing valve for point-of-origin installation in residential and light commercial domestic hot water systems with 3/4-inch female pipe thread connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and ASSE 1017 requirements. Shut off the water supply and relieve system pressure before beginning installation or service. Use appropriate thread sealant rated for potable water on all pipe thread connections. Do not exceed the rated maximum working pressure of 150 psi or the maximum temperature of 200 degrees F.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.