6.6 Flange forces and torques
If not all loads reach the maximum permissible value stated in the
tables below, one of these values may exceed the normal limit.
Contact Grundfos for further information.
Fig. 14 Flange forces and torques
Y-direction: Inlet/outlet
Z-direction: Direction of chamber stack
X-direction: 90 ° from inlet/outlet
Forces
The following tables represent values that applies according to
the material quality.
Force limits for CR cast-iron pump housing
25/32
1s-5
40
10
50
15 and 20
65
32
80
45
100
64 and 90
1256
125/150
120 and 150
1256
Torque limits to CR cast-iron pump housing
25/32
1s-5
40
10
50
15 and 20
65
32
80
45
100
64 and 90
125/150
120 and 150
338
394
319
413
469
375
563
581
506
694
788
638
938
769
844
1013
1125
1013
1125
300
175
125
400
275
200
450
325
250
500
350
300
325
400
550
375
475
625
375
475
625
Force limits for CRI, CRN stainless-steel pumps housing
25/32
1s-5
675
40
10
825
50
15 and 20
1125
65
32
1388
80
45
1875
100
64 and 90
2513
125/150
120 and 150
2513
Torque limits to CRI, CRN stainless steel pump housing
25/32
1s-5
600
40
10
800
50
15 and 20
900
65
32
1000
80
45
650
100
64 and 90
750
125/150
120 and 150
750
788
638
938
750
1163
1013
1575
1275
1538
1688
2025
2250
2025
2250
350
250
550
400
650
500
700
600
800
1100
950
1250
950
1250
11