Samson EB 20b, Mounting And Operating Instructions

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5-3
EB 20b_EN
February 2022 edition
Subject to technical changes
Installation
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Carry out venting on the side that faces away from the work-
ing area of operating personnel.
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When installing peripheral devices, make sure that they can
be operated from the working area of operating personnel.
5.4.2 Installing the ball valve
The ball valve is lined with PFA.
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Handle the ball valve with particular care and observe the in-
structions for the
fl ange connection.
Protect the lined ball valve surfaces in particular prior to/during
installation.
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Transport the ball valve in its original packaging to the instal-
lation site and unpack it only there.
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Lift the ball valve with suitable lifting equipment at the instal-
lation site, see chapter “4.3 Transporting and lifting the ball
valve”.
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Close the ball valve in the pipe for the duration of the instal-
lation.
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Remove the protective caps on the ball valve openings prior
to installation.
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Observe the fl ow direction of the ball valve. An optional ar-
row on the ball valve shows the fl ow direction, otherwise it
can be used in both directions.
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Clean the sealing surfaces on the ball valve and pipe.
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Use correct fl ange seals.
The sealing surfaces on the ball valve body are lined with plastic.
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Flange seals made of PTFE are recommended.
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Counter fl anges have smooth sealing surfaces. Other fl ange
shapes must be agreed upon with PFEIFFER.
Deformation of the pipes damages the ball valve!
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Prevent or fi x the deformation of the pipes.
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Screw the pipe together with the ball valve without tension.
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After installing the ball valve, open it slowly in the pipe.
Damage to the ball valve due to a sudden pressure increase
and resulting high
fl ow speed!
Open the ball valve slowly in the pipe during commissioning.
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Check the correct function of the ball valve.
Info
Info
NOTE
NOTE
5.4.3 Installation instructions for lined gate
ball valves with heat pack
When installing the lined ball valves with heat packs in the pipe,
a corresponding straight outlet pipe section must be included.
− If the bolted joint of the body must be retightened, this outlet
section allows the heat pack to be moved away from the ball
valve.
− As a result, the heat line does not need to be shut off. We rec-
ommend
fl exible connections for connecting the heating jacket
to the heat line.
Figure | 5-1: Outlet section
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The values in the following table are intended as a guide to
dimension the outlet section (L).
Table | 5-1: Outlet section
DN 15 25 40 50 80 100
L 195 240 300 345 465 525
5.5 Checking the assembled ball valve
5.5.1 Functional test
Danger of injury due to pressurised components and escaping
medium!
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Do not loosen the screw of an optional test connection while
the ball valve is pressurised.
Danger of crushing due to moving actuator- and switching
shaft!
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Do not reach into the bracket as long as the pneumatic pow-
er is connected to the actuator.
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Before working on the ball valve, interrupt and lock pneumat-
ic energy and the control signal.
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Vent the actuator.
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Do not allow the jamming of objects in the bracket to hinder
the operation of the actuator- and switching shaft.
Info
WARNING