2 worm gearboxes on ball valves, 1 worm gearboxes on butterfly valves, Motor operation 13 – AUMA Part-turn gearboxes GS 50.3 - 250.3, primary reduction gearings VZ 2.3 - 4.3_GZ 160.3 - 250.3 User Manual
Page 13: With mounted multi-turn actuator 13, Worm gearboxes on ball valves, Worm gearboxes on butterfly valves
