1/2" Copper Thermostatic Mixing Valve, Lead-Free, Union CPVC

Watts 1/2" Thermostatic Mixing Valve – Precision Control for Hot Water Systems

The Watts 1/2" Lead-Free Thermostatic Mixing Valve is built for reliable water temperature regulation in lavatories, sinks, and safety fixtures. Designed to maintain a stable mixed water temperature regardless of pressure or supply fluctuations, this valve is ideal for both residential and commercial applications that demand consistent and safe hot water delivery.

Featuring a lead-free brass body, integrated check valves, and filter washers, the valve delivers dependable performance in systems with hot water storage temperatures up to 180°F. Its compact design and broad compatibility make it an efficient choice for new installations and retrofits alike.

Key Performance Features

• Lead-Free Cast Brass Body – Certified to meet NSF 61 and 372 standards for potable water use.
• Thermostatic Wax Element – Ensures consistent outlet temperatures with fast response to inlet fluctuations.
• Precise Temperature Control – Adjustable output temperature range from 80°F to 120°F with ±3°F accuracy.
• Check Valves & Strainers Included – Protects against cross-flow and sediment, reducing maintenance frequency.
• High Pressure Rating – Suitable for systems up to 150 psi with flow rates from 0.5 to 20 gpm.

Specifications

• Inlet Size: 1/2 inch
• Body Material: Lead-free brass (copper silicon alloy)
• Inlet Temperature Range: 120°F–180°F hot / 39°F–85°F cold
• Mixed Temperature Range: 80°F–120°F
• Flow Rate: 0.5 to 20 gpm
• Maximum Operating Pressure: 150 psi
• Overall Dimensions: 4-3/4" W x 5-5/16" H

Installation Guidelines

This valve is designed for installation at the point of use or in line with a distribution manifold. A properly calibrated mixing valve ensures occupant safety and compliance with plumbing codes requiring tempered water delivery to fixtures. To ensure optimal performance, professional installation is recommended. Use of isolation valves and thermometers during setup is advised for initial calibration and future servicing.

Contractor Considerations

This mixing valve supports a wide range of applications, from residential bathroom upgrades to commercial washroom systems and public facilities. Its dual-check design and reliable thermostatic element make it suitable for environments requiring scald protection, pressure balancing, and reduced system maintenance.

Summary

The Watts 1/2" Lead-Free Thermostatic Mixing Valve offers a robust and code-compliant solution for hot water distribution systems. With durable materials, precise temperature regulation, and integrated safety features, it’s a dependable choice for professionals seeking long-term performance in plumbing and mechanical systems.