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3.4 Requirements to be met before installation
Remove sealing caps and foils.
Check the meter and accessories for signs of transport damage.
Check that the turbine moves easily by generating a gentle air current.
Ensure that you have all the tools you require available.
Check that all the accessories are present (e.g. plug connectors, oil for
initial filling).
Seals which are suitable for your operating medium (see Table 4 for
examples). Please also check whether you must comply with other
standards, e.g. DIN EN 1591, Parts 1 – 4.
Table 4 | Suitable seals and gaskets
Hexagon screws and nuts for flanges to DIN EN 1092-1
Material / Strength class
Screw
5.6
8.8
CK 35
25CrMo4
Table 5 | Suitable screws
Stud bolts with continuous thread for flanges to ASME B 16.5
Material / Strength class
Screw
A193 B6
A193 B7
Table 6 | Suitable stud bolts
Other equivalent materials may also be used.
20
DN
d1 [mm]
50
80
100
150
Nut
5
8
CK 35
25CrMo4
Nut
A194 Gr. 6
A194 Gr. 2H
up to 100 bar / -25°C
73018696g
© Elster GmbH | All rights reserved. Subject to modification
The following seals and
gaskets, among others, are
62
suitable:
100
- flat seals
125
- spiral-wound gaskets
178
- grooved seals and gaskets
Operating limits
up to 40 bar
down to -10°C
up to 100 bar
down to -10°C
up to 100 bar
down to -25°C
Operating limits
up to 100 bar / 0°C
Standards
DIN ISO 4014
DIN ISO 4032
DIN 2510
EN 10269
Standards
ASME B 1.1
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