Seal resistance for EPDM, FKM, HNBR, PTFE
Medium
Temperature
Sealing material (general operating temperature*)
EPDM
-40...+135 °C *
(-40...275 °F)
FKM
-10...+200 °C *
(+14...+392 °F)
HNBR
-25...+140 °C *
(-13...+284 °F)
PTFE
-200...+260 °C
(-328...+500°F)
Inorganic acids up
to 5%
up to 100 °C (212
°F)
–
+
–
+
Water
up to 80 °C (176 °F)
+
+
+
+
Steam
up to 135 °C (275°
F)
+
o
o
+
Steam, approx. 30
min
up to 150 °C (320
°F)
+
o
–
+
Fuels/hydrocarbons
–
+
+
+
Product with a fat
content of max. 35%
+
+
+
+
Product with a fat
content of more
than 35%
–
+
+
+
Oils
–
+
+
+
* Depending on the
installation
conditions
5.4
Pipe ends - General table of measurements
Hint!
Not every valve is available in every size. Particulars of available sizes
of valves see Section 5.2, Page 17.
Dimensions for tubes in DN
Metric DN
Outside
diameter
Wall
thickness
Inside
diameter
Outside
diameter acc.
to DIN 11850
25
29
1.5
26
x
40
41
1.5
38
x
50
53
1.5
50
x
65
70
2.0
66
x
80
85
2.0
81
x
100
104
2.0
100
x
125
129
2.0
125
x
150
154
2.0
150
x
Technical data
Pipe ends - General table of measurements
430BAL008583EN_1
12.08.2019
19
Summary of Contents for VARIVENT Series
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