From Assured Automation (Clark, NJ) now FM approved FireChek thermal shutoffs with resettable memory shape alloy can be used to automatically shut down a pneumatic control system when a nearby fire occurs, or when the ambient temperature reaches 135, 150, or 165°F.
When the FireChek senses excessive heat from a nearby fire, it immediately closes the air supply line preventing the air from feeding the fire. It simultaneously vents the spring return actuator to allow the return to fail-safe. The FireChek triggers quickly, securing pneumatically operated process line valves in their fail-safe position for both on/off and throttling applications. Because FireChek responds to heat, not flame, it offers dramatically improved protection compared with conventional plastic tubing burn-through.
The FireChek is used in both batch and continuous process systems as found in oil refining, paper manufacturing, chemicals, pharmaceutical and power plants.
For more information, visit www.assuredautomation.com