02G Grooved Butterfly Valve with Tamper Switch UL/FM. Designed for years of trouble free reliability, Kennedy UL-FM butterfly valves are constructed of durable ductile iron for a lightweight superior product. Stainless steel upper and lower shafts utilized as well as EPDM encapsulated discs. The fusion bonded coated bodies offer a superior long-lasting coating. The valves are slow operating with low torque leading to excellent high cycle life. The butterfly valves are always rated to 300psi and all are fully hydrostatically tested.