3.18.4 Shaft rotation

Shaft rotation determines which port of

the pump is suction and which is discharge.

Relation between shaft rotation and suction/discharge side is indicated by the rotation arrow plate attached at the relief valve or the top cover. The small arrows

2 and 3 indicate the flow direction of the pumped liquid. Always make sure that the pump rotates in the direction indicated by the rotation arrow plate.

3

1

2

1

Direction of rotation

 

 

 

 

 

 

 

of pump shaft

 

 

 

2

Suction side

 

 

 

3

Discharge side

For the specified direction of rotation, see the arrow plate on the pump.

Suction

Discharge

Suction

Suction

Discharge

Installation of safety relief valve

Suction

3.18.5 Suction and discharge pipes

3.18.5.1Forces and moments

Note! Excessive forces and moments on the connecting flanges derived from piping can cause mechanical damage to pump or pump unit.

Pipes should therefore be connected in line, limiting the forces on the pump connections. Support the pipes and make sure they remain stress-free during operation of the pump.

See table for maximum allowable forces (Fx, y, z) and moments (Mx, y, z) on the connecting flanges with pump on a solid foundation (e.g. grouted base plate or solid frame).

When pumping hot liquids attention should be given to forces and moments caused by thermal expansion in which case expansion joints should be installed.

TG MAG pump size

Fx, y, z (N)

Mx, y, z (Nm)

15-50

2600

675

 

 

 

23-65

2900

800

58-80

3550

1375

 

 

 

86-100

4100

1750

185-125

5900

3750

 

 

 

Check after connecting whether the shaft can move freely.

32

A.0500.551 – IM-TGMAG/02.00 EN (02/2008)

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SPX Cooling Technologies TG MAG58-80, TG MAG185-125 Shaft rotation, Suction and discharge pipes, Forces and moments

TG MAG86-100, TG MAG23-65, TG MAG58-80, TG MAG15-50, TG MAG185-125 specifications

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