The H17 Series valves provide complete shutoff in the event that the flame heating the thermocouple is extinguished. They are designed for standing pilot applications and can be used with natural or LP gas up to 0.5 psi. These valves are particularly suitable for small appliances including room heaters, infrared heaters, salamanders, refrigerators, etc. Sizes range from 1/8" NPT to 1/2" NPT and both standard and high temperature models are available.