bar agturn PKT Series, Operating Manual

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PKT-GD/GS-IM-DE-B-EN-09-19 Rev.0
operating conditions of the rotary actuator
must be agreed with the manufacturer. We
will be delighted to advise you.
5.3 Installation of ball valve
Fig. 5-1 Mounting a ball valve in pipeline
1. Before applying additional sealing mate-
rials, test whether the pipeline can easily
be screwed into the valve body.
2. Apply suitable sealing material to the
pipeline ends. By using PTFE-ribbon or
hemp sealings observe the screw direc-
tion. Do not use sealing material that is
not suitable for your intended purpose.
3. Screw the pipelines into the threaded
ends of the ball valve. Do not use the
complete valve as a lever!
4. Attention! Before you pressurize the
pipeline, the sealing material must be
hardened. Information on the harden-
ing time is available from the respective
manufacturer.
5. Check all connections for leaks.
5.4 Installation of rotary actuator
MV* Basic position Swivel
direction
Switched position
Piston
position
Position
indicator
Piston
position
Position
indicator
F
E
G
H
* MV = Mounting variants
Tab. 5-2 Mounting variants for rotary actuator
bar-agturn (see also type plate)
View from above
Left-turning mounting variants F/E
Left-turning means that the actuator rotates
counterclockwise when pneumatic port 2 is
pressurized.
Right-turning mounting variants H/G
Right-turning means that the actuator ro-
tates clockwise when pneumatic port 2 is
pressurized.
Left-turning opening - Right-turning
closing
In general, valves are opened by turning to
the left, i.e. counterclockwise, and closing
by turning to the right, i.e. clockwise.
With the appropriate selection of mounting
variant you can thus ensure with single-act-
ing rotary actuators that the valve is closed
(spring force closing: F/E) or opened (spring
force opening: H/G) in case of pressure fail-
ure.