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.
Forces and moments from the pipe connections acting on the pump flanges or threaded connections
Fig. 1
Diameter DN
Fy
40
500
50
675
65
850
80
1025
100
1350
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.
Tightening torques for bolts
We recommend the following tightening torques for bolts used in
flanged connections:
Bolt dimension
M12
M16
196
Force
[N]
ΣFb
Fz
Fx
625
550
975
825
750
1300
1050
925
1650
1250
1125
1975
1675
1500
2625
Torque
20 ft lb
(27 Nm)
48 ft lb
(66 Nm)
Moment
[Nm]
My
Mz
Mx
450
525
650
500
575
700
550
600
750
575
650
800
625
725
875
ΣMb
950
1025
1100
1175
1300