Symbols Used; Defi Nition Of Terms; Intended Area Of Use; Condition As Supplied To Customer - Gemü 550 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 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

Versions 0K, 1K, 2K, 3L and 4L are only valid for connection code 80 in combination with
valve body material C2 (only DN 15, 20, 25, 40, 50 and 65).
Working medium
Corrosive, inert, gaseous and liquid media 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
Other versions for lower/higher temperatures and viscosities
on request.
Control medium
Inert gases
Max. control pressure:
Max. perm. temperature of control medium:
Maximum permissible seat leakage rate / Open-Closed-Valve
Seat seal
PTFE
see table
-10 °C to 180 °C
600 mm²/s (cSt)
8 bar
60 °C
Standard Test procedure
DIN EN 12266-1
4

Intended area of use

The GEMÜ 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.
Technical data / Actuator
Actuator
size
0G1, 0M1
1G1, 1K1, 1M1, 1L1
2G1, 2K1, 2M1, 2L1
3G1, 3K1, 3M1, 3L1
4G1, 4K1
5G1, 5K1
Ambient conditions
Max. ambient temperature
Leakage rate
P12
25 / 44
WARNING
Filling Piston
volume diameter
0.006 dm³ 28 mm
0.025 dm³ 42 mm
0.084 dm³ 60 mm
0.245 dm³ 80 mm
0.437 dm³ 100 mm
0.798 dm³ 130 mm
Test medium
A air
550
60 °C