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2. Piping
1. Tightening of pipe flange
Table below shows the bolt size and tightening torque for the connection of pipe flange to pump flange. Tightening
torque is the figure when metallic flange and rubber gasket are used.
2. Pipe load and moment
Pipe load and moment put on the pump should not exceed the figures shown below.
Pump model
MDF-L401, 422, 423, 425
Tightening torque
79 N
⋅
m
Z
X
Y
X
Z
Y
Allowable pipe load on pump flange
Direction of load
Suction flange
Fx
Fy (Pression/Tension)
0.58
Fz
0.71
Load kN
Discharge flange
0.71
0.89
0.58
0.89/0.44
Allowable moment on pump flange
Direction of load
Suction flange
Mx
My
0.35
Mz
0.23
Moment kN
⋅
m
Discharge flange
0.35
0.46
0.23
0.46
MDF-L250
42 N
⋅
m
Bolt size
M12
M16