Grundfos MAGNA3 Montage- Und Betriebsanleitung Seite 57

1. Flange forces and moments
Maximum permissible forces and moments from the pipe connections acting on the pump flanges or threaded connections are indicated
in fig. 37.
Abb. 8 Forces and moments from the pipe connections acting on the pump flanges or threaded connections
Diameter DN Fy
25* 350
32* 425
40 500
50 675
65 850
80 1025
100 1350
* The values also apply to pumps with threaded connection.
The above values apply to cast-iron versions. For stainless-steel versions, the values can be multiplied by two according to the
ISO 5199 standard.
2. Tightening torques for bolts
Recommended tightening torques for bolts used in flanged con-
nections:
Bolt dimension
M12
M16
Force
[N]
Fz Fx
425 375
525 450
625 550
825 750 1300
1050 925 1650
1250 1125 1975
1675 1500 2625
Torque
27 Nm
66 Nm
Fb My
650 300 350
825 375 425
975 450 525
500 575
550 600
575 650
625 725
Moment
[Nm]
Mz Mx
450 650
550 800
650 950
700 1025
750 1100
800 1175
875 1300
Mb
57