22
PKI/EKI-IM-DE-B-EN-01-23 Rev.0
2.
First mark the position of the ball valve
middle section to a connection end.
3.
Loosen the hexagon nuts from the ball
valve screws crosswise and pull the ball
valve screws out of the housing.
4.
Now remove the ball valve middle sec-
tion. Attention! Make sure that the gas-
kets or the ball do not fall out of the
middle section of the housing. Carefully
place the middle section of the housing
incl. gaskets, ball and rotary actuator
aside and store them carefully.
5.
Carry out the steps – depending on the
type of ball valve – in Chap.
Chap.
5.3.2 Installation of ball valve with
welding ends
Weld connection ends
Fig. 5-2 Inserting the pipe section
1.
Now that you have removed the middle
section of the ball valve, mount a pipe
piece between the connection ends
which corresponds to the identical
length of the middle section of the hous-
ing. Then mount the connection ends to
the corresponding pipe piece by evenly
screwing the 4 hexagon housing screws
through the holes of the connection
ends with the hexagon nuts crosswise
(please observe the prescribed tighten-
ing torques).
2.
Weld the pipeline with the connection
ends in accordance with the applicable
requirements and guidelines.
Mounting the ball valve middle section
Fig. 5-3 Mounting the ball valve middle section
1.
Disassemble the previously inserted
pipe section.
2.
Now slide the ball valve middle section
between the connection ends. Make
sure that the ball valve middle section is
seated correctly and that the previously
made markings between the ball valve
middle section and the connection ends
match.
3.
Ensure that all gaskets are seated cor-
rectly and that there are no dirt or other
particles on the gaskets or the ball.
4.
Slide the 4 hexagonal housing screws
through the holes in the connection
ends. Tighten the hexagon nuts even-
ly and crosswise (please observe the
prescribed tightening torques, see
5-1).
5.
Check the valve for function and all con-
nections for leaks.
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