Assembling The Diaphragm Valve - GEM 9612 10M 01TW Installation, Operating And Maintenance Instruction

10.1 Assembling the
diaphragm valve
WARNING
The equipment is subject to
pressure!
® Risk of severe injury or death!
Only work on depressurized
G
plant.
WARNING
Corrosive chemicals!
® Risk of caustic burns!
Wear appropriate protective
G
gear when assembling.
WARNING
Hot plant components!
® Risk of burns!
Only work on plant that has
G
cooled down.
CAUTION
Never use the valve as a step or an aid
for climbing!
® This entails the risk of slipping-off or
damaging the valve.
WARNING
Do not exceed the maximum
permissible pressure!
® Take precautionary measures to
avoid possible pressure surges (water
hammer).
Assembly work may only be performed
G
by trained specialised staff .
Use appropriate protective gear as
G
specifi ed in plant operator's guidelines.
Installation location:
CAUTION
Do not apply external force to the valve.
G
Choose the installation location so that
G
the valve cannot be used as a foothold.
Lay the pipeline so that the valve body
G
is protected against transverse and
bending forces, and also vibrations and
tension.
Only mount the valve between matching
G
aligned pipes.
Direction of the working medium: optional.

Mounting position of the diaphragm valve:

optional.
Assembly:
1. Ensure the suitability of the valve for
each respective use. The valve must
be appropriate for the piping system
operating conditions (medium, medium
concentration, temperature and
pressure) and the prevailing ambient
conditions. Check the technical data of
the valve and the materials.
2. Shut off pressure line or process
line
3. Secure against re-commissioning.
4. WARNING Depressurize the plant or
plant component.
5. WARNING Completely drain the plant
(or plant component) and let it cool down
until the temperature is below the media
vaporization temperature and scalding
can be ruled out.
6. Correctly decontaminate, rinse and
ventilate the plant or plant component.
Assembly - Butt weld spigots:
1. Adhere to technical welding norms!
2. Remove the bonnet with the diaphragm
before welding the valve body into the
pipeline (see chapter 11.1).
3. Allow butt weld spigots to cool down.
4. Reassemble the valve body and the
bonnet with diaphragm (see chapter
11.4).
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