Flange Forces And Torques - Grundfos NB Original Installation And Operating Instructions

8. Flange forces and torques

Fig. 23 Flange forces and torques
Diameter
Grey cast iron
DN
32
40
50
65
80
Horizontal pump,
z-axis, 100
discharge port
125
150
200
250
300
50
65
80
100
Horizontal pump,
125
x-axis,
150
suction port
200
250
300
350
Diameter
Stainless steel
DN
32
40
50
Horizontal pump,
65
z-axis,
80
discharge port
100
125
150
50
65
80
Horizontal pump,
x-axis, 100
suction port
125
150
200
* Σ F and Σ M are the vector sums of the forces and torques.
22
Force [N]
Fy Fz Fx
315 298 368
385 350 438
525 473 578
648 595 735
788 718 875
1050 945 1173
1243 1120 1383
1575 1418 1750
2095 2600 2100
2700 3340 2980
3220 4000 3580
578 525 473
735 648 595
875 788 718
1173 1050 945
1383 1243 1120
1750 1575 1418
2345 2100 1890
2980 2700 3340
3580 3220 4000
4180 3760 4660
Force [N]
Fy Fz Fx
630 595 735
770 700 875
1050 945 1155
1295 1190 1470
1575 1435 1750
2100 1890 2345
2485 2240 2765
3150 2835 3500
1155 1050 945
1470 1295 1190
1750 1575 1435
2345 2100 1890
2765 2485 2240
3500 3150 2835
4690 4200 3780
ΣF*
My
578 263
683 315
910 350
1155 385
1383 403
1838 438
2170 525
2748 613
4055 805
5220 1260
6260 1720
910 350
1155 385
1383 403
1838 438
2170 525
2748 613
3658 805
5220 1260
6260 1720
7300 2200
ΣF*
My
1155 525
1365 630
1820 700
2310 770
2765 805
3675 875
4340 1050
5495 1225
1820 700
2310 770
2765 805
3675 875
4340 1050
5495 1225
7315 1610
If not all loads reach the maximum permissible value, one of the
values is allowed to exceed the normal limit. Contact Grundfos for
further information.
Torque [Nm]
ΣM*
Mz Mx
298 385 560
368 455 665
403 490 718
420 525 770
455 560 823
508 613 910
665 735 1068
718 875 1278
928 1138 1680
1460 1780 2620
1980 2420 3560
403 490 718
420 525 770
455 560 823
508 613 910
665 735 1068
718 875 1278
928 1138 1680
1460 1780 2620
1980 2420 3560
2540 3100 4560
Torque [Nm]
ΣM*
Mz Mx
595 770 1120
735 910 1330
805 980 1435
840 1050 1540
910 1120 1645
1015 1225 1820
1330 1470 2135
1435 1750 2555
805 980 1435
840 1050 1540
910 1120 1645
1015 1225 1820
1330 1470 2135
1435 1750 2555
1855 2275 3360