Emerson Bettis RTS Service Manual - Page 14
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Section 4: Manual Actuator Operation Under Maintenance
October 2021
4.1.1
Direction of rotation of handwheel for closing the valve,
Fail-safe direction "CW"
Figure 4
11
Rotation of direction for fail-safe direction "CW"
handwheel
direction of
rotation:
Closing
handwheel
direction of
rotation:
Closing
Service Manual
VCIOM-16909-EN Rev. 0
z13 (z11)
fail-safe close
z13 (z11)
fail-safe open
Manual Actuator Operation Under Maintenance