Watts LFMMVM1 US 3 4 3 4 IN Lead Free Thermostatic Mixing Valve, Solder Union End Connections, Adjus P 231 1808 They can be used with They can be used with any brand of liquid or water soluble fertilizers for residential Extra large tank openings for easier filling and cleaning Locking mechanism secures temperature setting 5 to 20 GPM Hot Inlet Temperature Range 120 to 180 degree F Hot Water Inlet Connection Size 3 4 IN Hot Water Inlet Connection Type Socket Hot Water Inlet Thread Type Does Not Apply To Product Lead Free YES Maximum Pressure Differential 25 Percent Maximum Working Pressure PSI 150 Minimum Differential Temperature Fahrenheit 5 Minimum Static Pressure PSI 30 Outlet Connection Size 3 4 IN Outlet Connection Size Metric 20 MM Outlet Connection Type Socket Outlet Temperature Accuracy + 7 degree F Outlet Thread Type Does Not Apply To Product Part Number 0559118 Series LFMMV Temperature Adjustment Range 80 to 120 degree F WiFiEnabled No