- 16 -
■ Tightening torque between the pump and pipework
• Flush the inside of pipes before connection.
• Connect the pump to pipework via inlet and outlet flanges according to the table below.
(This table is based on use of metal pipe flanges with rubber gaskets.)
• Tighten bolts diagonally at even tension.
■ 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.
Z
Y
X
Z
Y
X
Permissible stress to outlet flange
Permissible stress to inlet flange
Load direction
Pipe dia. (mm)
25
Load
Permissible moment to outlet flange
Permissible moment to inlet flange
40
0.10
0.15
0.15
0.20
0.10
0.10
0.10
0.15
kN
Fx
Fy: compression
Fy: tension
Fz
Load direction
Pipe dia. (mm)
25
Load
40
0.10
0.10
0.10
0.15
0.10
0.15
kN
Fx
Fy
Fz
Load direction
Pipe dia. (mm)
25
Moment
40
0.05
0.10
0.02
0.05
0.05
0.10
kN·m
Mx
My
Mz
Load direction
Pipe dia. (mm)
25
Moment
40
0.02
0.05
0.05
0.10
0.05
0.10
kN·m
Mx
My
Mz
Bolt size
Tightening torque (N•m)
M16
20
Installation