... B221010K, JISG55277.5K.** Operating system can be worm gear, pneumatic actuator and electric actuator. Actuator connection acc.ISO5211. ** Eccentric disc, dual parallel joist structure ... .5K. ** Operating system can be lever handle, worm gear, pneumatic actuator and electric actuator. Actuator mounting flange acc. ISO 5211.** Face to face dimension ...