https://www.youtube.com/watch?v=YdJE_poMq4I
Replacement of the sealing elements on the pneumatic actuator EB-SYD
https://www.youtube.com/watch?v=z_lp--jf_qA
Extended operating time by the use of a throttle unit on the spring return EB actuator
https://www.youtube.com/watch?v=j9EIp0_cwoY