859.0089
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Operating Temperature Range
* The maximum temperature listed is based on the ATEX standard for T4 temperature classification. If you are
operating in a non-explosive environment, FKM fluoroelastomer’s maximum operating temperature in aluminum or
stainless steel pumps is 320°F (160°C).
NOTICE
Temperature limits are based on mechanical stress only. Certain chemicals will further limit the maximum operating
temperature range. Stay within the temperature range of the most-restricted wetted component. Operating at a tem-
perature that is too high or too low for the components of your pump may cause equipment damage.
Diaphragm/Ball/Seat
Material
Fluid Temperature Range
Aluminum or
Stainless Steel Pumps
Polypropylene or
Conductive
Polypropylene Pumps
PVDF Pumps
Fahrenheit
Celsius
Fahrenheit
Celsius
Fahrenheit
Celsius
Acetal (
AC
)
10° to 180°F -12° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F -12° to 82°C
Buna-N (
BN
)
10° to 180°F -12° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F -12° to 82°C
FKM Fluoroelastomer
(
FK
)*
-40° to 275°F -40° to 135°C 32° to 150°F 0° to 66°C 10° to 225°F -12° to 107°C
Geolast
®
(
GE
)
-40° to 150°F -40° to 66°C 32° to 150°F 0° to 66°C 10° to 150°F -12° to 66°C
Polychloroprene over-
molded diaphragm
(
CO
) or Polychloro-
prene check balls (
CR
or
CW
)
0° to 180°F
-18° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F -12° to 82°C
Polypropylene (
PP
)
32° to 150°F
0° to 66°C
32° to 150°F 0° to 66°C 32° to 150°F
0° to 66°C
PTFE overmolded
diaphragm (
PO
)
40° to 180°F
4° to 82°C
40° to 150°F 4° to 66°C 40° to 180°F 4.0° to 82°C
PTFE check balls or
two-piece PTFE/EPDM
diaphragm (
PT
)
40° to 220°F
4° to 104°C 40° to 150°F 4° to 66°C 40° to 220°F
4° to 104°C
PVDF (
PV
)
10° to 225°F -12° to 107°C 32° to 150°F 0° to 66°C 10° to 225°F -12° to 107°C
Santoprene
®
(
SP
)
-40° to 180°F -40° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F -12° to 82°C
TPE (
TP
)
-20° to 150°F -29° to 66°C 32° to 150°F 0° to 66°C 10° to 150°F -12° to 66°C
