|Type of Certificate
|Actuators > Valves
|Pneumatic Scotch Yoke Actuators
Spring Return (SR) and Double Acting (DA)
|Codes and Standards
|Scope and Result
Spring Return variant:
- To move in direction of spring force
- To move in reverse direction of spring force
Double Acting variant:
- Acting (to move) on demand
The actuators are suitable for use in a safety instrumented system up to
SIL 2 (low demand mode). Under consideration of the minimum required hardware fault tolerance HFT = 1 the actuators may be used in a redundant architecture up to SIL 3.
|The instructions of the associated Installation, Operating and Safety Manual shall be considered.
Remark: In case of missing entries this is due to restrictions by the certificate holder