Steam equipments manufacture compact, self-contained, automatic control valves. These valves do not require any air/power supply. With this feature a lot of wiring, maintenance, electricity and air can be saved. This product is very easy to install, operate and the best designed product for steam tracing, hot water temperature control, gas, freeze protection, air, steam and related applications. At a designated set point, the thermostatic element located at the end of the valve [and thermally isolated from the body of the valve] will open of close to within a l0°f [5. 6°c] and control the flow of steam, gas or fluid. The heart of this valve is a solid to liquid phase change thermal actuator. The actuator contains thermoloid compound which changes phase from solid to a liquid as the temperature increases. As phase change occurs the volumes of thermoloid material changes significantly with the liquid volume greater than the solid volume. Since thermoloid is essentially incompressible under normal operating loads and it is sealed into a rigid actuator housing, only piston can move and extend as the volume increases. This motion is used to open or close the valve.
