The Apollo 34DLF-400 Series Mini Thermostatic Mixing Valve is designed for “Point of Use” single fixture temperature control applications, using proven ASTM grade lead free materials. These valves will provide control to a desired temperature within ± 3°F in accordance with the harmonized standard of ASSE1070-2015/ASME112.1070-2015/CSA B125.70-2015,New Updated Design Dezincification Resistant Lead Free Brass Body Tamper Resistant Locking Control Knob 120°F Temperature Limit Stop Integral Check Valves Now with Strainers 3/8" Compress Tube / Braided Hose Connection Hot / Cold Water Failure Protection Cross-Flow Protection Integral Mounting Pad Satin Chrome Plating Option Made in USA - ARRA Compliant