Flowserve LHS Hydraulic Heavy-Duty Actuator Series - Manual (Page 12)

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LHS Hydraulic Heavy-Duty Actuator Series FCD LFENIM0003-00-AQ 7/14
2.7 Fail Open and Fail Close Configuration
The actuator is designed for work in both configurations: fail open and fail close. For conversion from one configura-
tion to the other, refer to next paragraph.
Figure 13: Single Acting Actuator Configuration: Fail Open – Fail Counter Clockwise
Figure 14: Double Acting Actuator Configuration – Close Position Figure 15: Double Acting Actuator Configuration – Open Position
Figure 16: Single Acting LHS – Fail Close
Configuration With Valve
Figure 17: Double Acting LHS With Valve
Figure 12: Single Acting Actuator Configuration: Fail Close – Fail Clockwise