Type of Connection R F and RTJ flange ends to ANSI B16.5 or API 605 and MSS SP-44 standard. BW flange ends to ANSI B16.25 standard. Type of Operation Lever Connection dimensions of Worm Gear actuator. Electric actuator, Pneumatic actuator to ISO 5211 standard. Anti-static Electricity constructions "AS" and Fire-safe constructions "FD".