VERDER VERDERAIR VA 25 Manual page 31

Operating Temperature Range
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
Acetal (AC)
Buna-N (BN)
FKM Fluoroelastomer
(FK)*
®
Geolast (GE)
Polychloroprene over-
molded diaphragm
(CO) or Polychloro-
prene check balls
or CW)
Polypropylene (PP)
PTFE overmolded
diaphragm (PO)
PTFE check balls or
two-piece PTFE/EPDM
diaphragm (PT)
PVDF (PV)
®
Santoprene (SP)
TPE (TP)
* 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).
Aluminum or
Stainless Steel Pumps
Fahrenheit
10° to 180°F -12° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F
10° to 180°F -12° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F
-40° to 275°F -40° to 135°C 32° to 150°F 0° to 66°C 10° to 225°F -12° to 107°C
-40° to 150°F -40° to 66°C 32° to 150°F 0° to 66°C 10° to 150°F
0° to 180°F -18° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F
(CR
32° to 150°F 0° to 66°C
40° to 180°F 4° to 82°C
40° to 220°F 4° to 104°C
10° to 225°F -12° to 107°C 32° to 150°F 0° to 66°C 10° to 225°F -12° to 107°C
-40° to 180°F -40° to 82°C 32° to 150°F 0° to 66°C 10° to 180°F
-20° to 150°F -29° to 66°C 32° to 150°F 0° to 66°C 10° to 150°F
NOTICE
Fluid Temperature Range
Polypropylene or
Conductive
Polypropylene Pumps
Celsius Fahrenheit
32° to 150°F 0° to 66°C 32° to 150°F
40° to 150°F 4° to 66°C 40° to 180°F
40° to 150°F 4° to 66°C 40° to 220°F
PVDF Pumps
Celsius Fahrenheit Celsius
-12° to 82°C
-12° to 82°C
-12° to 66°C
-12° to 82°C
0° to 66°C
4.0° to 82°C
4° to 104°C
-12° to 82°C
-12° to 66°C
859.0089 31