IWAKI PUMPS MXM Series, Instruction Manual

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Installation
2. Pipework
■ Tightening torque between the pump and pipework
Connect the pump to pipework via inlet and outlet flanges according to the tightening torque below. Tighten
bolts diagonally at even tension.
Model Bolt size Tightening torque
MXM22/44/54 M16 79N•m
NOTE1: The table is based on use of metal pipe flanges with rubber gaskets.
NOTE2: Select the best bolt length so as not to come in contact with the pump.
■ Piping load and momentum
Try not to apply heavy load to the pump inlet and outlet flanges. Permissible piping weight and moment to
the pump are as below.
Permissible stress to inlet & outlet flanges
Load direction
Load kN
Discharge flange Suction flange
Fx 0.71 0.89
Fy (compression/tension) 0.89/0.44 0.58
Fz 0.58 0.71
Permissible moments to inlet & outlet flanges
Load direction
Moment kN•m
Discharge flange Suction flange
Mx 0.35 0.46
My 0.46 0.35
Mz 0.23 0.23