GEM 651 - Order Data GEMÜ 651

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651
5 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.
The valve will seal in both flow directions up to full operating pressure (gauge pressure).
Materials
Actuator housing Cover: PP
Base: 1.4408
Control medium
Quality classes to DIN ISO 8573-1
Actuator size 0/1
Dust content Class 3 (max. particle size 5 μm), (max. particle density 5 mg/m³)
Pressure dew point Class 3 (max. pressure dew point -20 °C)
Oil concentration Class 3 (max. oil concentration 1 mg/m³)
Actuator size 2
Dust content Class 3 (max. particle size 5 μm), (max. particle density 5 mg/m³)
Pressure dew point Class 4 (max. pressure dew point 3 °C)
Oil concentration Class 5 (max. oil concentration 25 mg/m³)
Filling volume
Actuator size 0: 0.028 dm³
Actuator size 1: 0.071 dm³
Actuator size 2: 0.239 dm³
Temperatures
Media temperature -10 to 100 °C
Ambient temperature
Actuator size 0/1
Actuator size 2
0 to +60 °C
0 to +50 °C
Max. permissible temperature of control medium
Actuator size 0/1
Actuator size 2
60 °C
50 °C
Flow rate of pilot valve (at 6 bar)
Actuator size 0/1
Actuator size 2
15 l/min
100 l/min
Sterilisation temperature
(1)
EPDM (code 13/3A)
max. 150 °C
(2)
, max. 60 min per cycle
EPDM (code 17)
max. 150 °C
(2)
, max. 180 min per cycle
PTFE (TFM) (code 52/5A)
max. 150 °C
(2)
, no time limit per cycle
PTFE (TFM) (code 5E)
max. 150 °C
(2)
, no time limit per cycle
¹ The sterilisation temperature is valid for steam (saturated steam) or superheated water.
² If the sterilisation 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 be adapted
accordingly. This also applies to PTFE(TFM) diaphragms exposed to high temperature fluctuations.
PTFE (TFM) 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.
Steam input
Process pipe
Steam distribution Sterile process