Skip to Main Content


Part of the LFUSG-B Series

Ordering Code: 0204146

UPC: 098268548365

Lead Free: YES

3/8 In Lead Free Quick-Connect Thermostatic Mixing Valve, Adjustable 80-120 F

This 3/8 inch Under Sink Guardian (R) lead free thermostatic mixing valve is used in commercial and residential applications to control the hot water temperature and minimize the potential for accidental scalding. It is suitable for kitchen and bath installations where the water delivered to the fixtures is intended for bathing or washing. The double throttling design controls both the hot and cold water supply to the mixed outlet. This valve consists of a lead free brass body, 3/8 inch quick connect fittings, copper thermostat, check valves, integral strainer with 40 mesh stainless steel screens, and a tamper resistant locking cap. The maximum working pressure is 150 psi (10.3 bar). The water temperature can be field adjusted between 80 to 120 degrees F (27 to 49 degrees C). The recommended maximum temperature is 120 degrees F (49 degrees C)

Product Features

  • Provides superior flow rate between 0.25 and 2.5 GPM
  • ASSE 1070 listed and CSA certified
  • Built-in check valves prevent hot and cold water cross flow
  • Accurate temperature control with low pressure drop
Approach Temperature 5
Body Finish Rough Bronze
Body Material Lead Free Copper Silicon Alloy
Brand Name Watts
Capacity 2.25 GPM
Cold Inlet Temperature Range 39 to 80 degree F
Cold Water Bypass No
Cold Water Inlet Connection Size 3/8 IN
Cold Water Inlet Connection Type Quick Connect
Cold Water Inlet Thread Type Does Not Apply To Product
Dial Thermometer No
Factory Set Temperature-Fahrenheit 105
Field Adjustable Range 80 to 120 degree F
Flow Rate 2.25 GPM
Hot Inlet Temperature Range 120 to 180 degree F
Hot Water Inlet Connection Size 3/8 IN
Hot Water Inlet Connection Type Quick Connect
Hot Water Inlet Thread Type Does Not Apply To Product
Lead Free YES
Maximum Flow Rate 2.25 GPM
Maximum Pressure Differential 25 percent
Maximum Temperature-Fahrenheit 200
Maximum Working Pressure-PSI 150
Minimum Differential Temperature-Fahrenheit 5
Minimum Flow Rate 0.5 GPM
Minimum Static Pressure-PSI 30
Model Number LFUSG-B-QC-M2
Outlet Connection Size 3/8 IN
Outlet Connection Type Quick Connect
Outlet Temperature Accuracy +/- 7 degree F
Outlet Thread Type Does Not Apply To Product
Part Number 0204146
Pressure Drop Does Not Apply To Product
Series LFUSG-B
Temperature Adjustment Range 80 to 120 degree F
Vacuum Breaker No