Installation And Operation; Installing The Diaphragm Valve - Gemü 625 Original Einbau- Und Montageanleitung

10 Installation and operation

Prior to installation:
Ensure that valve body and diaphragm
G
material are appropriate and compatible
to handle the working medium.
Check the suitability prior to the
G
installation.
See chapter 5 "Technical data".
10.1 Installing the
diaphragm valve
WARNING
The equipment is subject to pressure!
® Risk of severe injury or death!
Only work on depressurized plant.
G
WARNING
Corrosive chemicals!
® Risk of caustic burns!
Wear appropriate protective
G
gear when installing.
CAUTION
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.
CAUTION
Do not exceed the maximum
permissible pressure!
® Take precautionary measures to
avoid possible pressure surges
(water hammer).
Installation work must only be performed
G
by trained personnel.
Use appropriate protective gear as
G
specifi ed in plant operator's guidelines.
Installation location:
Do not apply external force to the valve.
G
Choose the installation location so that
G
the valve cannot be used as a foothold
(climbing aid).
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
G
matching aligned pipes.
Direction of the working medium:

optional.
Mounting position of the diaphragm valve:

optional.
Installation:
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 plant or plant component.
3. Secure against recommissioning.
4. Depressurize the plant or plant
component.
5. 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.
Installation - Butt weld spigots:
1. Adhere to good welding practices!
2. Disassemble the actuator 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
actuator with diaphragm (see chapter
11.4).
27 / 40
CAUTION
625