English (GB)
20
* Antimony, not approved for potable water.
The example shown is an LS 125-100-305F/273.1 standard type
with standard coupling, DIN PN 16 flange, cast iron pump
housing with SS304 impeller, BBQE mechanical shaft seal and
clockwise direction of rotation.
7.2.1 Codes for mechanical shaft seal
Positions (1) - (4) cover four pieces of information about the
mechanical shaft seal:
The following table explains the positions (1), (2), (3) and (4).
For other mechanical shaft seal variants, please contact
Grundfos.
7.2.2 Codes for stuffing box
ABQV: O-ring seal, unbalanced, carbon/SiC, FKM
DBQE: O-ring seal, balanced, carbon/SiC, EPDM
DBQV: O-ring seal, balanced, carbon/SiC, FKM
SBQE: Rubber bellows seal, balanced, carbon/SiC, EPDM
SBQV: Rubber bellows seal, balanced, carbon/SiC, FKM
BQQE: Rubber bellows seal, unbalanced, SiC/SiC, EPDM
BQQV: Rubber bellows seal, unbalanced, SiC/SiC, FKM
AQQE: O-ring seal, unbalanced, SiC/SiC, EPDM
AQQV: O-ring seal, unbalanced, SiC/SiC, FKM
DQQE: O-ring seal, balanced, SiC/SiC, EPDM
DQQV: O-ring seal, balanced, SiC/SiC, FKM
SQQE: Rubber bellows seal, balanced, SiC/SiC, EPDM
SQQV: Rubber bellows seal, balanced, SiC/SiC, FKM
BBVP: Rubber bellows seal, carbon/aluminium oxide, nitrile rubber
SNEK: Stuffing box with synthetic polymer packing rings, uncooled, with internal barrier fluid
Direction of rotation
(Pump direction of rotation as seen from the motor end)
1:
Clockwise
2:
Counterclockwise
Code
Example
LS
125
-100
-305X /273.1 , (W)
1
F2
D
S BBQE 1
Example
(1)
(2)
(3)
(4)
Grundfos type designation
Material, rotating seal face
Material, stationary seat
Material, secondary seal and other rubber and composite parts
Pos.
Type
Short description of seal
(1)
A
O-ring seal, unbalanced
B
Rubber bellows seal, unbalanced
D
O-ring seal, balanced
S
Rubber bellows seal, balanced
H
Cartridge seal, balanced
Pos.
Type
Material
(2) and (3)
A
Carbon, metal-impregnated (antimony, not
approved for potable water)
B
Carbon, resin-impregnated (approved for
potable water)
Q
Silicon carbide
U
Tungsten carbide
V
Aluminium oxide
Pos.
Type
Material
(4)
E
EPDM
P
Nitrile rubber (NBR)
V
FKM (Viton
®
)
Pos. Code Short description of stuffing box
1
S
Stuffing box with packing rings
2
Cooling method
N Uncooled
stuffing
box
3
Barrier fluid
E
With internal barrier fluid
4
K
Synthetic polymer packing rings, graphite
impregnated. NBR O-ring in the pump
Summary of Contents for LS 100-80-241
Page 1: ...LS Service instructions GRUNDFOS INSTRUCTIONS ...
Page 2: ...2 ...
Page 22: ...English GB 22 9 Sectional drawings 9 1 LS with sleeve construction type 1 TM03 9952 4707 ...
Page 30: ...English GB 30 Fig 18 Construction type 3 LS 100 80 241 XE TM03 9951 4317 ...
Page 34: ...English GB 34 Fig 25 Construction type 4 LS 300 200 489 LS 350 250 508 TM03 9942 4317 ...
Page 44: ...44 ...
Page 45: ...45 ...
Page 46: ...46 ...
