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ram

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Posts: 27
Reply with quote  #1 
This is a case with double suction centrifugal pump discharge piping vibration especially downstream of expansion bellow. Pump shows only 5 mm/sec vibration only.
Shurafa

Sr. Member / Supporter
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Posts: 310
Reply with quote  #2 
Can you provide more details (piping isometric, pump cross-sectional, vibration spectra etc)?

Have there been any changes in the pump, process or piping? Can I assume this an old pump but the problem is new?

Regards- Ali M. Al-Shurafa
ram

Member
Registered:
Posts: 27
Reply with quote  #3 
Exactly it is a old pump but the problem is new. I have no isometric but I can explain. In the discharge line there is a bellow fallowed by nrv and isolation valve(butterfly)
Pump flow 900 m3/hr
Services .sea water circulation
Line size. 300 nb
This problem is prominent after bellow replacement




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