Butterfly Valve Technical Data; Medium; Temperature; Pressure - GEM R488 Victoria Operating Instructions Manual

7 Butterfly valve technical data

7 Butterfly valve technical data

7.1 Medium

Working medium:

7.2 Temperature

Media temperature:
Ambient temperature:
Storage temperature:

7.3 Pressure

Operating pressure:
Vacuum:
GEMÜ R488 Victoria
Gaseous and liquid media which have no negative impact on the physical and chemical properties
of the disc and seat material.
-10 — 160 °C
Depending on the liner and disc material or the type of liner fixing
Liner material
J
NBR (code J)
F
SBR (AB/P) (code F)
(7)I
NR (AB/W) (code I)
M
EPDM, white (code M)
N
NBR (code N)
U
NBR, white (code U)
W
EPDM (code W)
E
EPDM (code E)
H
CSM (code H)
Z
EPDM HT (code Z)
V
FPM (code V)
EPDM SHT (code T)
T
O
FKM+ (code O)
-10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
FKM material not suitable for water/steam applications above 100 °C,
Observe Pressure/Temperature diagram.
-10 — 70 °C
-20 — 40 °C
DN 25–200: 0–16 bar
DN 250–600: 0–10 bar
Observe pressure/temperature diagram
Use as an end-of-line valve:
DN 25–200: 10 bar
DN 250–600: 6 bar
Can be used up to a vacuum of 800 mbar (abs) with replaceable liner or with bonded liner up to a
vacuum of 2 mbar (abs) through a leakage rate at 10
These values apply to room temperature and air. The values may deviate for other media and other
temperatures.
Disc material (code E)
Temperature [°C]
Not recommended for permanent temperature
-3 [mbar l/sec]
104 / 172
Disc material (code R)
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