Leonard Valve gives plumbing engineers “integrated control” by offering single thermostatic mixing valves that use either bi-metal or paraffin based technology as the valve’s thermostatic control. By offerng two technologies, Leonard can provide valve solutions for all of your water temperature controls requirements. 
 
 
Type TM Mixing Valves 
 
Leonard Thermostatic Water Mixing Valves are powered by the exclusive DURA-trol® solid bimetal thermostat, which cannot puncture or lose power, and is linked directly to valve porting, to control the intake of hot water and cold water and to compensate for supply temperature or pressure fluctuations. DURA-trol® is highly responsive and provides mixed water temperatures and are listed to ASSE Standard 1017.  
 
Paraffin Based Technology 
 
Along with bi-metal solutions, Leonard’s valve models offer “integrated control” for water tempering design and installation needs. Leonard latest lines of valves utilize advanced paraffin-based thermostatic control technology that offers efficient response time to temperature and pressure fluctuations, ensuring optimal temperature control and performance for domestic hot water systems. These valves provide accurately mixed water from extremely low flows of 1.0 GPM (3.8 lpm), to high flow requirements. These valves are all listed to the stringent performance requirements of ASSE Standard 1017.  
 
Paraffin-based valves are installed to control water temperature for building hot water systems - hotels, hospitals, commercial/institutional installations.