Watts 0204158 Valve

The Watts 0204158 LFUSG-CS is a 3/8-inch lead-free Under Sink Guardian® thermostatic mixing valve designed for point-of-use temperature control in commercial and institutional plumbing applications. The valve blends hot and cold water to maintain a controlled outlet temperature and incorporates Cross Sense™ Technology with temperature-sensitive visual indicators to help identify hot and cold inlet cross-connections.

Watts specifies an adjustable outlet temperature range of 80°F to 120°F, with a 105°F factory setting and outlet temperature accuracy of ±3°F. The lead-free DZR brass body uses 3/8-inch compression connections and is rated for a maximum working pressure of 150 psi.

A removable service cartridge incorporates check valves and strainers to simplify inspection and maintenance. This thermostatic mixing valve is suitable for under-sink installations in hospitals, schools, commercial buildings, institutional facilities, and other applications requiring controlled mixed-water delivery.

Key Benefits

• Manufacturer: Watts
• Ordering Code: 0204158
• Model: LFUSG-CS
• Series: Under Sink Guardian®
• Connection Size: 3/8 inch
• Connection Type: Compression
• Body Material: Lead-free DZR brass
• Temperature Adjustment Range: 80°F to 120°F
• Factory Setting: 105°F
• Outlet Temperature Accuracy: ±3°F
• Maximum Working Pressure: 150 psi
• Minimum Supply Pressure: 30 psi
• Minimum Flow: 0.25 GPM
• Cross Sense™ visual indicators help identify inlet cross-connections
• Serviceable cartridge incorporates check valves and strainers
• Compact configuration designed for installation beneath sinks and counters

Common Questions

What is the Watts 0204158 LFUSG-CS used for?
The LFUSG-CS is a point-of-use thermostatic mixing valve designed to blend hot and cold water and maintain a controlled mixed-water temperature at compatible fixtures.

What size connections does the Watts 0204158 use?
The valve uses 3/8-inch compression connections for the hot inlet, cold inlet, and mixed-water outlet.

What is the adjustable temperature range?
The adjustable mixed-water temperature range is 80°F to 120°F, with the valve factory set at 105°F.

What does Cross Sense™ Technology do?
Cross Sense™ uses temperature-sensitive visual indicators at the valve inlets to help technicians identify potential hot and cold water cross-connections.

Does the LFUSG-CS have serviceable internal components?
Yes. The valve incorporates a removable cartridge with integrated check valves and strainers to simplify servicing and maintenance.

Where is the LFUSG-CS typically installed?
Its compact under-sink configuration makes it suitable for point-of-use applications in commercial buildings, schools, hospitals, institutional facilities, and other installations requiring controlled mixed-water delivery.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

0204158 is the cross for 0204152