Gemü 534 Original Einbau- Und Montageanleitung Seite 18

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 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
valve.
6 Technical data
Working medium
Corrosive, inert, gaseous and liquid media and steam which
have no negative impact on the physical and chemical
properties of the body and seal material.
Max. perm. pressure of working medium
Medium temperature
Max. permissible viscosity
Seat seal
PTFE
534
see table
-10° to 180 °C
600 mm²/s (cSt)
Maximum permissible seat leakage rate
Standard Test procedure
DIN EN 12266-1
4 Intended area of use
The GEMÜ 534 2/2-way 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 6
"Technical Data").
The valve is also available as a control

valve.
Use the valve only for the intended
purpose!
® Otherwise the manufacturer liability and
guarantee will be void.
Use the valve only in accordance with
G
the operating conditions specified in
the contract documentation and in the
installation, operating and maintenance
instructions.
The valve may only be used in
G
potentially explosive zones confirmed
in the declaration of conformity (ATEX).
5 Condition as supplied to
customer
The GEMÜ valve is supplied as a separately
packed component.
Control medium
Inert gases
Max. perm. temperature of control medium:
Filling volume:
Actuator size 0 and 3:
Actuator size 1 and 4:
Actuator size 2:
Ambient conditions
Max. ambient temperature
Leakage rate
P12
20 / 36
WARNING
Test medium
A air
60 °C
0.05 dm³
0.125 dm³
0.625 dm³
60 °C