User Guide

Table Of Contents
Appendix
196
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.
Fig. 1 Forces and moments from the pipe connections acting on the pump flanges or threaded connections
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:
TM05 5639 4012
Force
[N]
Moment
[Nm]
Diameter DN Fy Fz Fx ΣFb My Mz Mx ΣMb
40 500 625 550 975 450 525 650 950
50 675 825 750 1300 500 575 700 1025
65 850 1050 925 1650 550 600 750 1100
80 1025 1250 1125 1975 575 650 800 1175
100 1350 1675 1500 2625 625 725 875 1300
Bolt dimension Torque
M12
20 ft lb
(27 Nm)
M16
48 ft lb
(66 Nm)