SQFlex Service Instructions

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Type key
The type key is common for helical rotor pump and centrifugal pump.
Centrifugal pumps come in two main types: with splined pump shaft and with cylindrical pump shaft.
25 SQF-3 and 25 SQF-6 have a splined pump shaft. 40 SQF-3 and 60 SQF-3 have a cylindrical shaft.
XSQF-X
Rated flow rate in US GPM at 3000 min
-1
(approximate value)
• 3 = helical rotor pump
• 6 = helical rotor pump
• 11 = helical rotor pump
• 25 = centrifugal pump
• 40 = centrifugal pump
• 60 = centrifugal pump
Type range
Number of stages
sqflex_SI_US_WG.book Page 6 Thursday, October 1, 2009 3:27 PM