Grundfos NBG Series - Pump Type Key - Continued; Shaft Seal and Rubber Part Codes

English (GB)
6
Example 1 shows an NB 32-125.1 pump with these
characteristics:
Example 2 shows an NBG 125-100-160 pump with
these characteristics:
K 1.4408 1.4408 1.4517 1.4401
L 1.4517 1.4517 1.4517 1.4462
M 1.4408 1.4517 1.4517 1.4401
N 1.4408 1.4408
Carbon-graphite-
filled PTFE
(Graflon
®
)
1.4401
P 1.4408 1.4517
Carbon-graphite-
filled PTFE
(Graflon
®
)
1.4401
R 1.4517 1.4517
Carbon-graphite-
filled PTFE
(Graflon
®
)
1.4462
S EN-GJL-250 1.4408 Bronze/brass 1.4401
T EN-GJL-250 1.4517 Bronze/brass 1.4462
U 1.4408 1.4517 1.4517 1.4462
W 1.4408 1.4517
Carbon-graphite-
filled PTFE
(Graflon
®
)
1.4462
X Special version
Rubber parts in pump
Material of O-ring for pump cover
EEPDM
F FXM (Fluoraz
®
)
K FFKM (Kalrez
®
)
M FEPS (PTFE-sheathed silicone O-ring)
X HNBR
VFKM (Viton
®
)
Shaft seal arrangement
S Single seal
Code for mechanical shaft seal and shaft seal rubber parts
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
• reduced performance
• 142 mm impeller
• basic version
• ATEX approval, certificate or test report
• DIN flange to EN 1092-2 pipework connection
• 10 bar flange pressure rating
• cast iron pump housing, EN-GJL-250
• cast iron impeller, EN-GJL-200
• bronze/brass wear ring
• stainless steel shaft, EN 1.4301
• EPDM O-ring for pump cover
• single shaft seal arrangement
• BAQE shaft seal.
• 160-142 mm conical impeller
• basic version
• DIN flange to EN 1092-2 pipework connection
• 16 bar flange pressure rating
• stainless steel pump housing, EN 1.4408
• stainless steel impeller, EN 1.4408
• carbon-graphite-filled PTFE (Graflon
®
) wear
ring
• stainless steel shaft, EN 1.4401
• FFKM O-ring for pump cover
• single shaft seal arrangement
• DQQK shaft seal.