GEM N082 Installation, Operating And Maintenance Instructions For The Installer And The User page 27

Installation - Butt weld spigots:
1. Adhere to good welding practices!
2. Weld valve into pipeline.
3. Allow butt weld spigots to cool down.
Installation - Union ends with insert:
CAUTION
Damage to the valve body!
For union ends with DIN insert (socket):
G
Adhere to good welding practices!
For union ends with DIN insert (for IR
G
butt welding):
Only use solvent cement suitable for
the valve body.
The solvent cement is not included
in the scope of delivery!
1. Screw the threaded connections into
the piping in accordance with valid
standards.
2. Unscrew union nut 1 from valve body 2.
3. Reinsert O-ring 3 if necessary.
2
4. Push the union nut 1 over the piping 4.
Connect the insert 5 with the piping 4 by
cementing / welding.
5. Screw the union nut 1 to the valve 2
again.
6. Connect the other side of the valve
body 2 to the piping 4, too.
2 1
3
3 5 1 4
Installation - Threaded connections:
Screw the threaded connections into the
G
piping in accordance with valid standards.
Screw the valve body into the piping, use
G
appropriate thread sealant.
The thread sealant is not
included in the scope of delivery.
Installation - Flanges:
1. Pay attention to clean, undamaged
sealing surfaces on the mating fl anges.
2. Align fl anges carefully before installing
them.
3. Centre the seals accurately.
4. Connect the valve fl ange and the piping
fl ange using appropriate sealing material
and matching bolting. Sealing material
and bolts are not included in the scope
of delivery.
5. Use all fl ange holes.
6. Only use connector elements made of
approved materials!
7. Tighten the bolts diagonally!
Observe appropriate regulations for
connections!
After the installation:
Important:
Diaphragms set in the course of
time. After valve installation and
commissioning you must retighten
the bolts 15 diagonally.
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N082, N182