Installation; Installation Conditions; Before Installation - bar agturn PKT Series Operating Manual

5. Installation

WARNING
Installation works
There is a risk of injury if this prod-
uct is not properly installed, disas-
sembled and
• Make sure the personnel has received
the appropriate training.
• Observe the safety instructions in
„Chapter 2. Safety" .
NOTE
Check the technical parameters, in par-
ticular pressure and temperature, and the
electrical voltage of the control valve be-
fore installing or commissioning the rotary
actuator.
The piping system and control system must
be installed properly.
Make sure the valve is moving in the cor-
rect direction of rotation. Always mount
the valves into the pipeline without tensing
them.
The valve is not designed to absorb addi-
tional pipe connection forces. In the case of
large valves, it is recommended to support
the pipeline.
5.1

Installation conditions

The minimum space requirement can be
found in the dimension drawing or dimen-
sion table ( „Chapter 1. Annex / Technical
data" ).
PKT-GD/GS-IM-DE-B-EN-09-19 Rev.0
put into operation.
5.2

Before installation

Observe the following points before instal-
lation:
•
The dew point of the control medium
must be min. 10 °C lower than the low-
est operating temperature! The max.
temperature of the control medium is
45 °C!
• The rotary actuator is not suitable for
accepting external lateral forces on the
pinion as well as for permanent torsional
vibrations in the end positions.
• When operating valves, considerable
kinetic energy can be generated which
is transmitted to the actuator. The
user must ensure that the rotary actu-
ator is adequately protected and that
the below-mentioned switching times
for soft-sealing flaps and standard ball
valves for pure 90° rotary movement are
not exceeded.
The following minimum switching times for
the rotary movement of 90° must be ob-
served:
Type (GD/GS)
032 till 063
075 till 125
140 till 210
240 till 400
Tab. 5-1 bar-agturn minimum times for the
rotary movement of 90°
The switching time can be reduced and ad-
justed by using silencers or throttle plates
from our range of accessories.
We recommend hydraulic damping for criti-
cal applications.
For other valve types, in particular large-vol-
ume valves with low torque requirement, the
Switching times
0,3 sec
0,7 sec
1,0 sec
2,0 sec
25