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Tools
▶ The tools required for installation and assembly are not
included in the scope of delivery.
Use appropriate, functional and safe tools.
●
1. Ensure the product is suitable for the relevant application.
2. Check the technical data of the product and the materials.
3. Keep appropriate tools ready.
4. Wear appropriate protective gear as specified in the plant
operator's guidelines.
5. Observe appropriate regulations for connections.
6. Have installation work carried out by trained personnel.
7. Shut off plant or plant component.
8. Secure the plant or plant component against recommis-
sioning.
9. Depressurize the plant or plant component.
10. Completely drain the plant or plant component and allow it
to cool down until the temperature is below the media va-
porization temperature and cannot cause scalding.
11. Correctly decontaminate, rinse and ventilate the plant or
plant component.
12. Lay piping so that the product is protected against trans-
verse and bending forces, and also from vibrations and
tension.
13. Only install the product between matching aligned pipes
(see chapters below).
14. Optional flow direction.
15. Please note the installation position (see chapter "Installa-
tion position").
10.2 Installation position
For the installation position of the product, observe the
chapter "Optimized draining of valves".
10.3 Installation with butt weld spigots
Fig. 2: Butt weld spigots
1. Carry out preparations for installation (see chapter "Pre-
paring for installation").
2. Adhere to good welding practices!
3. Disassemble the actuator with the diaphragm before weld-
ing in the valve body (see "Removing the actuator"
chapter).
4. Weld the body of the product in the piping.
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NOTICE
Angle of rotation
▶ Observe the angle of rotation (see "Optimized draining of
valves", page 17).
5. Allow butt weld spigots to cool down.
6. Reassemble the valve body and the actuator with dia-
phragm (see "Mounting the actuator" chapter).
7. Re-attach or reactivate all safety and protective devices.
8. Flush the system.
10.4 After the installation
● Re-attach or reactivate all safety and protective devices.
10.5 Optical position indicator
Pulsation damper open
10.6 Optimized draining of valves
In specialist literature and documents from valve manufactur-
ers and plant designers, the term "self-draining" is often used
in conjunction with valves and plants or plant sections. This
term is used to describe the residue-free and automatic drain-
ing of containers and piping with the valve opened. This drain-
ing depends on various factors. Even vertical piping with open
ends does not guarantee complete and residue-free draining.
Correctly rotating or positioning diaphragm valve 2/2-way
bodies results in the low points of the valve body internal con-
tour lying on one plane and therefore is a prerequisite for op-
timized draining in horizontal piping.
The residue-free drainability and draining of a system and its
components is nevertheless the responsibility of the plant de-
signer, constructor and operator and is essentially dependent
on the design and layout of the system.
17 / 26
10 Installation in piping
NOTICE
Pulsation damper closed
GEMÜ 652
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