The FM Fire-Safe Shutoff fusible link valve assemblies from Assured Automation are API 607 and Factory Mutual approved for flammable liquids, and are commonly used to activate sprinkler systems to control fire, and to shut down hazardous lines when fire occurs.
These valve and fusible link assemblies include manually operated ball or butterfly valves. If a fire occurs, the thermal link either automatically stops the flow of flammable liquids (in a normally open configuration) – or opens flow to release a fire retardant or divert the flammable material (a normally closed configuration). The assembly is unique in the industry and requires little to no maintenance. Using this design, the FM Fire-Safe’s fusible link holds up to many years of use and does not need to be replaced on an annual basis.
The FM Fire-Safe is also available with an electro-thermal link (ETL) which is compatible with most smoke or gas detectors. The operating range for the electro thermal link is 6–30VAC, and requires less than 0.2 amperes of power, 0.5 milliseconds at 24 volts. The electro-thermal option is used with fuel and combustion control applications, combustion safeguards, and electro-signalling systems that are heat activated, smoke or gas activated, flame-energy activated, or activated by rate of rise or maximum temperature.