11.1.8 Shaft seals
The operating range of the seals is described for two main
applications: pumping of water or pumping of coolants.
Seals with a temperature range of 32 °F (0 °C) and up are mainly
used for pumping water, while seals for temperatures below 32 °F
(0 °C) are mainly intended for coolants.
We do not recommend that you operate the pump at
maximum temperature and maximum pressure at the
same time, as it results in reduced seal life and the
occurrence of periodic noise.
Shaft seal diameter [mm]
28, 38
48
55
60
Shaft seal type
Seal faces
Rubber
Code
Temperature range Max. pressure [PSI] ([bar])
Bellows seal, type B,
unbalanced
AQ
1
EPDM
BAQE
32-248 °F
(0-120 °C)
232 (16)
232
(16)
232
(16)
232
(16)
BQ
1
FKM
BBQV
32-194 °F
(0-90 °C)
232 (16)
232
(16)
232
(16)
232
(16)
Q
7
Q
7
EPDM
BQQE
-13 to +248 °F
(-25 to +120 °C)
232 (16)
232
(16)
232
(16)
232
(16)
Q
7
Q
7
FKM
BQQV
14 to 194 °F
(-10 to +90 °C)
232 (16)
232
(16)
232
(16)
232
(16)
O-ring seal, type D,
balanced
AQ
1
FXM
DAQF
32-284 °F
(0-140 °C)
363 (25)
363
(25)
363
(25)
363
(25)
Q
6
Q
6
EPDM
DQQE
-4 to +248 °F
(-20 to +120 °C)
363 (25)
363
(25)
363
(25)
363
(25)
11.2 Electrical data
See the motor nameplate.
12. Disposing of the product
This product or parts of it must be disposed of in an environmentally
sound way.
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company or
service workshop.
The crossed-out wheelie bin symbol on a product
means that it must be disposed of separately from
household waste. When a product marked with this
symbol reaches its end of life, take it to a collection
point designated by the local waste disposal
authorities. The separate collection and recycling of
such products will help protect the environment and
human health.
See also end-of-life information at
.
22
English (US)
Summary of Contents for NBS 025-095/08.43AAEG6S3ESBQQETX2
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