Watts 204034 Thermostatic Mixing Valve 3/4 in Asse 1017

Product Description

The WATTS 204034 is a 3/4-inch thermostatic mixing valve designed to blend hot and cold water supplies to a stable, controlled outlet temperature. Sold under the model designation 1170-UT-M1, this valve meets ASSE 1017 performance standards for temperature-actuated mixing valves. It is intended for hydronic heating systems, commercial wash stations, and similar non-potable water applications. Licensed plumbers and hydronic system installers are the primary trade for this valve. Per manufacturer designation, this valve is not approved for potable water service after 2013, and must be applied accordingly in any compliant installation.

The 1170-UT-M1 is suited for residential and light-commercial hydronic heating loops, radiant floor systems, and tempered-water delivery in non-potable contexts. The 3/4-inch connection size fits standard supply and return piping common in these systems. Installers should confirm the intended application complies with all applicable local codes and the ASSE 1017 listing scope before specifying this valve. It is not a replacement for an ASSE 1070 or ASSE 1016 listed device in potable or point-of-use applications.

Key Features

• Meets ASSE 1017 standard for temperature-actuated mixing valves
• 3/4-inch connection size for standard hydronic piping
• Thermostatic element maintains stable mixed outlet temperature
• Not rated for potable water service after 2013 — verify application before installation
• Catalog number 0204034 for cross-reference and ordering

Compatibility

Designed as an OEM-style thermostatic mixing valve for non-potable hydronic and tempered-water systems where an ASSE 1017-listed 3/4-inch mixing valve is specified. Not for use in potable water systems after 2013 per manufacturer designation.

Installation Notes

Installation should be performed by a licensed plumber or hydronic systems technician in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the hot and cold supply lines and depressurize the system completely before removing or installing the valve. Do not apply this valve to any potable water application given the manufacturer restriction noted on this part. Verify inlet temperature ranges and flow conditions match the valve's intended operating parameters before commissioning.

Technical Specifications

• Connection Size: 3/4 inches
• Valve Type: Thermostatic Mixing Valve
• Listing Standard: ASSE 1017
• Model Designation: 1170-UT-M1
• Potable Water Rating: Not approved for potable water after 2013
• UPC: 098268026344

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 204034