REQUIRING minimal maintenance and lasting for many years, the FM fire safe fusible link manual shutoff valves developed by Assured Automation have been developed to protect refineries and chemical processors from fire hazards.
The shutoff assemblies, which are API 607 compliant and Factory Mutual approved for flammable liquids, are commonly used to activate sprinkler systems to control fire and to shut down hazardous lines when fire occurs.
When a fire occurs, the thermal link on the assemblies either automatically stops the flow of flammable liquids (in a normally open configuration) or opens f low 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, since its U.L. listed fusible links are installed with a lever design rather than bearing 100 per cent of the spring tension.
Using this design, the FM Fire-Safe’s fusible link holds up to many years of use and, unlike other thermal shutoffs in the market, 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 6-30 VAC, or 6-30 VAC, 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, f lame-energy activated, or activated by rate of rise or maximum temperature.
A unique, removable handle allows the valve to manually operated locally or remotely from over 30 feet without affecting the fusible links.
The removable handle prevents injury or damage from the high-powered quick acting handle in the event of fire actuation.
Mechanical engineers can choose the type of valves included, the end connections used, the steel used to make the body and the trigger temperatures on the valve, making it easy to configure a valve to meet each particular application’s requirements.