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Model 621
Sub-ANSI Centrifugal Pump
316 Stainless Steel
Sealed or Mag-Drive

Suction Port 1 1/4" NPT/FLG 1
Discharge Port 1" NPT/FLG 1
Impeller Diameter (Full Size) 5"
Impeller Trims (Standard) 4.5" 4" 3.5" 3"
Max Flow Rate 90 GPM
Max Total Head 100 ft.
Max Discharge Pressure 300 PSIG 2
Max Temperature 500 °F 3
Min Temperature -100 °F 3
Max Speed 3500 RPM
NPSHR @ 3500 RPM & BEP 15 FT
NPSHR @ 1750 RPM & BEP 3.7 FT
Weight (without motor)
 Sealed: Single Int. Mech.
 Mag-Drive
NPT
17 LBS
42 LBS
FLG
23 LBS
48 LBS

1 Standard Flanges are ANSI 150# RF.

2 Maximum Pressure Rating for 150# Flanges is 275
PSIG up to 100°F. Derating required above 100°F.

3 Temperature Limit given for Mag-drive pump with proper configuration; Temperature Limit for Sealed pump is dependent on Motor or Driver.

Liquiflo's Centry® Series are Sealed and Magnetically-Coupled (MC) Centrifugal pumps engineered and manufactured for the user with increased needs for equipment reliability. These pumps are specifically designed to handle the lower flow applications that create maintenance problems for standard ANSI pumps operating at less than BEP.
 
 

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Performance Curves
621 - 1750/3500 (pdf)
 
621 - 1450/2900 (pdf)
 
Dimensional Drawings
621 Sealed NPT CC (pdf)
 
621 Sealed FLG CC (pdf)
 
621 MC NPT CC (pdf)
 
621 MC FLG CC (pdf)
 
Product Manuals
621/622 Sealed (pdf)
 
621/622 Mag-Drive (pdf)
 
Model Coding
Centry-Series Sealed (pdf)
 
Centry-Series Mag-drive (pdf)
 
Bill of Materials
Centry-Series (pdf)

 

 

 
621 Performance Curves (Typical)  
 
 
 
 
621 Dimensional Drawings  
 
 
621 Sealed with NPT Ports, Close-Coupled
 
 
 
 
621 Mag-Drive with NPT Ports, Close-Coupled
 
 

 

 

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