14
1
2
3
4
5
6
1
3
1
2
3
4
5
6
1
Edition: 2022-06 Original document - Mi-503 EN
3 Description
3.1 General information
Somas pneumatic actuators type A are available in two designs:
•
double acting - type DA
•
single acting - type SC (spring to close) or SO (spring to open)
The actuator offers a patented backlash-free transmission coupling and a special
friction coupling which eliminate the play between the actuator and the valve.
(Valid for valves with a shaft diameter ≤ 50 mm).
1 Valve positioner 3 End position bolt 5 Bracket
2 Mounting plate 4 Clamping ring 6 Mounting flange
Fig.3-1 Controlling valve with integrated actuator type A and a electropneumatic valve positioner
3.2 Important advice
The driver may only be used to operate the actuator during installation. Do never
use the driver for a emergency operation.
1 Driver
Fig.3-2 Driver
To Next Page
Loading...