FM-approved valves and valve assemblies for liquid and gas shutoff, new from A-T Controls, bring advanced design, patented features, and build-to-order application flexibility to protection of fuel-burning equipment. Approved to FM class 7400, 7420 and 7422, the A-T shut-off assemblies provide fast action on shut-off needs with quick quarter-turn actuation. The A-T units feature a spring-return automated ball valve, explosion-proof limit switch and solenoid pilot valve, quarter-turn rack-and-pinion actuator design, valve seating, and patented stem seal system. The valves are configurable to a wide range of shut-off requirements and are available in 3-piece or flanged models, 316SS or WCB trim, and 1/4″ to 6″ sizes. The 3-piece valves offer choice of threaded, socket weld or butt weld end connections, while flanged valves are available in 150# or 300# flange rating. Assemblies can be ordered with manual safety cocks or automated safety shut-off valves. Solenoids are approved for water-proof as well as explosion-proof environments. All the valves feature A-T Control’s exclusive pyramidal stem seal system.
