7 Technical data
7.1 Medium
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.
For special oxygen version (code S):only gaseous oxygen
7.2 Temperature
Media temperature:
Diaphragm material
Standard
Special version
for oxygen
NBR (Code 2)
-10 — 100 °C
-
FKM (Code 4)
-10 — 90 °C
-
CR (Code 8)
-10 — 100 °C
-
EPDM (Code 13)
-10 — 100 °C
0 — 60 °C
EPDM (Code 17)
-10 — 100 °C
-
EPDM (Code 19)
-10 — 100 °C
-
EPDM (Code 29)
-10 — 100 °C
-
EPDM (Code 36)
-10 — 100 °C
-
PTFE/EPDM (Code 54)
-10 — 100 °C
-
PTFE/EPDM (Code 5M)
-10 — 100 °C
-
Sterilization temperature:
EPDM (Code 13)
max. 150 °C, max. 60 min per cycle
EPDM (Code 17)
max. 150 °C, max. 180 min per cycle
EPDM (Code 19)
max. 150 °C, max. 180 min per cycle
EPDM (Code 36)
max. 150 °C, max. 60 min per cycle
PTFE/EPDM (Code 54)
max. 150 °C, permanent temperature per cycle
PTFE/EPDM (Code 5M)
max. 150 °C, permanent temperature per cycle
The sterilization temperature is only valid for steam (saturated steam) or superheated water.
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 be adapted accord-
ingly.
PTFE diaphragms can also be used as moisture barriers; however, this will reduce their service life. This also ap-
plies to PTFE diaphragms exposed to high temperature fluctuations. 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
Steam distribution
Sterile process
Process pipe
Ambient temperature:
0 — 60 °C
GEMÜ 639 eSyStep
OPEN / CLOSE (Code AE)
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7 Technical data
