Bradley Thermostatic Mixing ValvesANSI standards require tepid water to assure that eyewash and shower users are not subjected to freezing or scalding water temperatures. Thermostatic mixing valves blend hot and cold water to a comfortable flushing temperature between 60 degrees F and 95 degrees F. Model S19-2000 provides 8 gallons per minute and accommodates up to three eyewashes or one eye/face wash. Model S19-2100 provides 36 gallons per minute and accommodates one drench shower, one combination unit or multiple eyewashes. Model S19-2200 provides 67 gallons per minute and accommodates up to two combination showers with eyewashes or multiple eye and eye/face washes.