Symbols Used; Defi Nition Of Terms; Intended Area Of Use; Technical Data - Gemü 650 Original Einbau- Und Montageanleitung

2.3

Symbols used

Danger - hot surfaces!
Danger - corrosive materials!
Hand: indicates general information
and recommendations.
Bullet point: indicates the tasks to
G
be performed.
Arrow: indicates the response(s) to
®
tasks.
Enumeration sign

3 Definition of terms
Working medium
The medium that flows through the
diaphragm valve.
Control medium
The medium whose increasing or
decreasing pressure causes the diaphragm
valve to be actuated and operated.
Control function
The possible actuation functions of the
diaphragm valve.
5

Technical data

Operating, cleaning and sterilization media
Corrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body
and diaphragm material.
The compatibility of the operating, cleaning and disinfecting agents with the valve materials must be checked by the operator
before use in order to avoid damage to plant components.
The valve will seal in both flow directions up to full operating pressure (gauge pressure).
Temperatures
Media temperature
Sterilization temperature
EPDM (code 13/3A)
EPDM (code 17)
PTFE / EPDM (code 54)
PTFE/EPDM (code 5M, 5Q)
¹ The sterilization temperature is valid for steam (saturated steam) or superheated water.
² If the sterilization temperatures listed above are applied to the EPDM diaphragms for longer periods of time,
the service life of the diaphragms will be reduced. In these cases, maintenance cycles must the service life of the
diaphragms will be reducedbe adapted accordingly.
This also applies to PTFE diaphragms exposed to high temperature fluctuations.
PTFE diaphragms can also be used as moisture barriers; however, this will reduce their service life. The maintenance
cycles must be adapted accordingly. GEMÜ 555 and 505 globe valves are particularly suitable for use in the area of steam
generation and distribution. The following valve arrangement for interfaces between steam pipes and process pipes has
proven itself over time: A globe valve for shutting off steam pipes and a diaphragm valve as an interface to the process pipes.
Ambient temperature
(1)
4

Intended area of use

The GEMÜ 650 diaphragm valve is

designed for installation in piping
systems. It controls a flowing medium
by being closed or opened by a control
medium.
The valve may only be used providing

the product technical criteria are
complied with (see chapter 5
"Technical data").
Do not paint the bolts and plastic parts of

the diaphragm valve!
Use the diaphragm valve only for the
intended purpose!
Otherwise the manufacturer liability and
®
guarantee will be void.
Use the diaphragm valve only in
G
accordance with the operating
conditions specified in the contract
documentation and in the installation,
operating and maintenance
instructions.
The diaphragm valve may only be used
G
in potentially explosive zones confirmed
in the declaration of conformity (ATEX).
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WARNING
-10 to 100 °C
max. 150 °C , max. 60 min per cycle
(2)
max. 150 °C , max. 180 min per cycle
(2)
max. 150 °C , no time limit per cycle
(2)
max. 150 °C , no time limit per cycle
(2)
Steam input
Sterile process
Steam distribution
650
Process pipe
0 to 60 °C