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312877C 23
Fluid 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 fluid 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 fluid temperature range. Stay within the temperature range of the
most-restricted wetted component. Operating at a fluid temperature 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
Fahrenheit Celsius Fahrenheit Celsius
Acetal (AC)
10° to 180°F -12° to 82°C 32° to 180°F 0° to 82°C
Buna-N (BN)
10° to 180°F -12° to 82°C 32° to 180°F 0° to 82°C
FKM Fluoroelastomer (FK)*
-40° to 275°F -40° to 135°C 32° to 180°F 0° to 82°C
Geolast
®
(GE)
-40° to 150°F -40° to 66°C 32° to 150°F 0° to 66°C
Neoprene overmolded diaphragm (CO)
or Neoprene check balls (CR or CW)
0° to 180°F -18° to 82°C 32° to 180°F 0° to 82°C
Polypropylene (PP)
32° to 180°F 0° to 82°C 32° to 180°F 0° to 82°C
PTFE overmolded diaphragm (PO)
40° to 180°F 4.0° to 82°C 40° to 180°F 4° to 82°C
PTFE check balls or two-piece
PTFE/EPDM diaphragm (PT)
40° to 220°F 4° to 104°C 40° to 180°F 4° to 82°C
PVDF (PV)
10° to 225°F -12° to 107°C 32° to 180°F 0° to 82°C
Santoprene
®
(SP)
-40° to 180°F -40° to 82°C 32° to 180°F 0° to 82°C
TPE (TP)
-20° to 150°F -29° to 66°C 32° to 150°F 0° to 66°C