3. Piping
- 20 -
Tightening torque for piping flange of pump.
Recommended bolt size for piping flange is M16 and tightening torque is 78.4N
·
m.
(In the case of steel flange with rubber gasket.)
Load of piping and momentum of piping for MDE
The permissible stress and moment applicable to pump connection arrangement are as shown below.
The piping should be designed and worked so that stress and moment, higher than those values indicated in the table,
should not be applied to the pump.
Table 9 : Piping loadings
Forces of discharge piping
Forces of suction piping
Direction of load
Mx
My
Mz
Direction of load
Fx
Fy
Fz
kN·m
0.89
0.58
0.71
kN·m
1.33
0.89
1.07
Dia. of pipe (mm)
50
65, 80
Load
kN·m
0.46
0.35
0.23
kN·m
0.95
0.72
0.47
Dia. of pipe (mm)
50
65, 80
Load
Direction of load
Fx
Fy: compression
Fy: tension
Fz
kN·m
0.71
0.89
0.44
0.58
Dia. of pipe (mm)
32, 40, 50
Load
Mx
My
Mz
Direction of load
kN·m
0.35
0.46
0.23
Dia. of pipe (mm)
32, 40, 50
Load
Moments of suction piping
Moments of discharge piping
