With any kind of instrumentation, optimal performance is achieved when it is running at a specified temperature. Our selection of valves offers a reliable, economical alternative to costly, hazardous electric heating. Our self-contained compact thermostatic control valves sense enclosure temperature and automatically regulate the flow of steam or glycol to maintain the temperature. Regardless of the steam pressure or available heating/cooling media temperature, these valves will maintain a tight temperature band of any control loop or process system.