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Piping Design Centrifugal Pump

Piping Design Centrifugal Pump

Piping Design Centrifugal Pump

(OP)
Hi,

Why the suction and discharge lines have to be one or two sizes larger than the pump connection nozzles? What could happen if the suction or discharge lines are larger than the pump suction or pump discharge nozzles? I would appreciate if anyone can help me with an answer to this topic.

Regards,

One Point

RE: Piping Design Centrifugal Pump

This subject has been discussed at length please check the "Search" feature and see what you get.

RE: Piping Design Centrifugal Pump

(OP)
Hi Pennpiper,

I could not find any answer to my questions. If you know of a link where I can read about this topic, please send it to me.

Regards,

One Point

RE: Piping Design Centrifugal Pump

It's probably because you're not looking in the pump forum (forum407).  Here's a few to get you started:
thread407-251629: Low capacity Diaphragm pump - sizing suction and discharge
thread407-231947: Pump suction pipeline size less than pump suction nozzle
thread407-262097: Pumps suction and discharge lines
thread378-239699: Question about the piping at pumb suction line

Patricia Lougheed

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RE: Piping Design Centrifugal Pump

For the suction line, you need to look at the difference between NPSHA and NPSHR.  The following link should help:
http://www.mcnallyinstitute.com/11-html/11-12.html

For the discharge, you need to look at the pump curve and the system curve and their intersection to understand what you need.

RE: Piping Design Centrifugal Pump

Your questions sound like they are from a piping design training class.

I think you need to check your text book and your notes then ask your instructor.  

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