Installation
The valve is closed after
a clockwise rotation.
The valve is open after
a counterclockwise rotation.
Section 4: Installation
This section explains:
•
The actuator rotation direction.
•
In which position the actuator will end after a failure.
•
Principles of operation:
—
Pneumatic operation.
—
Double acting and Spring return operation.
•
Assembly codes.
•
Actuator to valve assembly.
4.1
Before You Start
SAFETY
In case of an air or electrical failure, it is important to know the behavior of the actuator.
Before mounting the actuator on a valve, consult the following sections below.
4.2
Actuator Rotation Direction
4.2.1
Valve Rotation
For the following paragraphs we assume that valves rotate as indicated in Figure 3.
Figure 3
Normal valve rotation
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3
April 2019
9
Section 4: Installation