Flowserve Valtek VR User Instructions page 11

Actuator Orientations for Valdisk and ShearStream Control Valves
Shaft Upstream
Air-to-Open
Fail Closed
Left-hand Mounting (optional)
Shaft Upstream
Air-to-Open
Fail Closed
Left-hand Mounting (optional)
Actuator Orientation
Note: Orientations 2 and 4 are not available
on some actuator sizes.
1
2
4
3
VLAIM031-14 (EN/AQ) May 2023
Right-hand Mounting (standard)
Air-to-Open
Fail Closed
Air-to-Close
Fail Open
Air-to-Close
Fail Open
Actuator Orientations for MaxFlo Control Valves
Right-hand Mounting (standard)
Air-to-Open
Fail Closed
Air-to-Close
Fail Open
Air-to-Close
Fail Open
1
4
3
Figure 4: Transfer Case Mounting
Valtek VR Spring Cylinder Rotary Actuators
Shaft Downstream
Air-to-Close
Fail Open
Left-hand Mounting (standard)
Shaft Downstream
Air-to-Close
Fail Open
Left-hand Mounting (standard)
Handwheel Orientation
Note: These orientations are in
relation to the pipeline.
2
Right-hand Mounting (optional)
Air-to-Close
Fail Open
Air-to-Open
Fail Closed
Air-to-Open
Fail Closed
Right-hand Mounting (optional)
Air-to-Close
Fail Open
Air-to-Open
Fail Closed
Air-to-Open
Fail Close
D
C
A
Page 11 of 13