Grundfos NBG Series - Pump Type Key; Type Key Explanation and Codes; Type Key Components Explained

English (GB)
5
4.2 Type key
Model B
Example 1 (pump design according to EN 733) NB 32 -125 .1 /142 AE F 1 A E S BAQE
Example 2 (pump design according to ISO 2858) NBG 125 -100 -160 /160-142 A F 2 N K S DQQK
Type range
Nominal diameter of suction port (DN)
Nominal diameter of discharge port (DN)
Nominal impeller diameter [mm]
Reduced performance = .1
Actual impeller diameter [mm]
Code for pump version (the codes may be combined)
A Basic version
B Oversize motor
C Without motor
D Pump housing with feet
E
With ATEX approval, certificate or test report, the second character of the pump version
code is an E
F Version with base frame
S With support blocks
X Special version (in case of further customisation than already listed)
Pipe connection
E Table E flange
F DIN flange
G ANSI flange
J JIS flange
Flange pressure rating (PN - nominal pressure)
110 bar
216 bar
325 bar
440 bar
5 Other pressure rating
Materials
Pump
housing
Impeller Wear ring Shaft
A EN-GJL-250 EN-GJL-200 Bronze/brass 1.4301
BEN-GJL-250
Bronze
CuSn10
Bronze/brass 1.4301
C EN-GJL-250 EN-GJL-200 Bronze/brass 1.4401
DEN-GJL-250
Bronze
CuSn10
Bronze/brass 1.4401
E EN-GJL-250 EN-GJL-200 EN-GJL-250 1.4301
FEN-GJL-250
Bronze
CuSn10
EN-GJL-250 1.4301
G EN-GJL-250 EN-GJL-200 EN-GJL-250 1.4401
HEN-GJL-250
Bronze
CuSn10
EN-GJL-250 1.4401
I 1.4408 1.4408 1.4517 1.4462
J 1.4408 1.4408
Carbon-graphite-
filled PTFE
(Graflon
®
)
1.4462