Leonard Valve Company features its DURA-trol solid bimetal thermostat technology in its single and multi-valve systems for emergency shower applications. Leonard Thermostatic mixing valves (TA-300 series for eye/face wash, TM-500 series for multiple eye/face wash, and TM-800 series for drench or combination systems) are constructed of bronze, brass and stainless steel alloys and exceed the specifications of ANSI Standard Z358.1/1998.