Flowserve LHS Hydraulic Heavy-Duty Actuator Series User Manual download pdf (Page 8)

LHS Hydraulic Heavy-Duty Actuator Series FCD LFENIM0003-00-AQ 7/14

Installation Instructions

The LHS is a fully modular design scotch-yoke actuator, with mounting base in compliance with ISO 5211 and the

Technical Bulletin (LFENTB0003-00). It may also be customized, if required.

The LHS Hydraulic Scotch Yoke Spring Return Actuators adopt a push-to-compress spring design.

a WARNING: Actuator operation/pressure limitations must be in accordance with Technical Bulletin (LFENTB0003-00)

2.1 Valve and Actuator Check

DANGER: Before installation check the order no., serial no., and/or the tag no. to ensure that the valve/actuator is

correct for the intended application.

Prior to mounting the actuator to the valve, manually open and close the valve (if possible) to ensure it is not stuck. Be

sure valve and Limitorque actuator rotate in the same direction and are in the same position (i.e.: valve closed, actuator

closed). The assembly position of the actuator, with reference to the valve, has to be in accordance with the plant

requirements (actuator axis parallel or perpendicular to the pipeline axis).

Figure 7: Standard Nameplate Position

Figure 8: Nameplate Sample

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Flowserve LHS Hydraulic Heavy-Duty Actuator Series User Manual Page 8