Mfg date: Nov. 2009. For severe duty, abrasive slurry applications. Ductile iron ASTM A536 body; 2205 alloy stainless steel gate; field replaceable urethane liner; 10" double acting pneumatic cylinder with dual coil solenoid valve, proximity switches, and locking ball valve. All pre-wired to fiberglass terminal enclosure. Actuator fail position: Fail in place LOS / Fail in place LOA.