These assemblies are FM approved for use in applications requiring protection for fuel burning equipment per FM class 7400, 7420 and 7422. The components include a spring return automated ball valve, explosion-proof limit switch and solenoid pilot valve. Valves are available in 3-piece or flanged design. 3-piece design offers threaded, socket weld or butt weld end connections. Flanged valves are available with 150# and 300# flange rating. Available in sizes 1/2"- 6". Assemblies feature the latest in quarter-turn automation, rack and pinion actuator design; a marked improvement from the older spring-diaphragm technology. The actuator, combined with the superior valve seating and stem seal design, provides for reliable and consistent closure when needed. These assemblies provide for a compact fuel gas safety shut-off system.