September 2015
Installation, Operation and Maintenance Manual
RGS011110-1 Rev. 0
3
Section 2: Installation
Installation
Section 2: Installation
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Bettis RGS Q-Series actuators may be installed in any position/orientation.
Figure 5
Clockwise Shaft Rotation
In this view, the spring causes
clockwise shaft rotation�
Figure 6
Counterclockwise Shaft Rotation
In this view, the spring causes
counterclockwise shaft rotation�
•
Looking down on the actuator, a cylinder in Figure 6 will have the spring cause
counterclockwise rotation of the actuator shaft when pressure is exhausted
from the end cap port.
•
The body port on all Bettis RGS Q-Series spring-return actuators is for breathing purposes
only. Single and double-cylinder body ports may be pressurized to add to the spring
forces, but provides minimal benefit and defeats the rationale for having a spring-return.
•
All Bettis RGS Q-Series actuators have identical drive geometries on both faces of the body,
therefore they may have their action reversed simply by turning the top side down.
•
Single and double-cylinder actuators include NAMUR mounting pads and drive
adapters, however, unlike competitor’s actuators, the NAMUR drive may be mounted
to either side of the single and double-cylinder models to enable action reversal.
