Symbols Used; Definition Of Terms; Intended Area Of Use; Condition As Supplied To Customer - Gemü R690 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 valve to be
actuated and operated.
Control function
The possible actuation functions of the
diaphragm valve.
6

Technical data

Working medium
Corrosive, inert, gaseous and liquid media which have no
negative impact on the physical and chemical properties of
the body and diaphragm material.
Working medium temperature
Valve body PVC-U
Valve body ABS
Valve body PP / PP-H
Valve body PVDF
The permissible operating pressure depends on the working
medium temperature.
Ambient temperature
Valve body PVC-U
Valve body ABS
Valve body PP / PP-H
Valve body PVDF
R690
4
The GEMÜ R690 diaphragm valve

is designed for installation in piping
systems. It controls a fl owing 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 6
"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 specifi ed in the contract
documentation and in the installation,
operating and maintenance
instructions.
5
The GEMÜ diaphragm valve is supplied as a
separately packed component.
Control medium
Inert gases
Max. perm. temperature of control medium
Filling volume (control function 1):
Diaphragm size 20
Diaphragm size 25
10 to 60 °C
Diaphragm size 40
Diaphragm size 50
-20 to 60 °C
Diaphragm size 80
5 to 80 °C
Diaphragm size 100
-10 to 80 °C
Diaphragm material
10 to 50 °C
-10 to 50 °C
5 - to 50 °C
-5 - to 50 °C
Other combinations on request
22 / 40

Intended area of use

WARNING
Condition as supplied
to customer
O-ring material for
valve bodies with union ends
NBR
FPM
EPDM
PTFE
40 °C
0.10 dm³
0.20 dm³
0.55 dm³
1.10 dm³
2.50 dm³
2.50 dm³
O-ring material
EPDM
FPM
EPDM
FPM