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jcsignature
Active Contributor

Join Date: Sep 2011
Posts: 10

Allowable Nozzle Forces and Moments For Vertical Pumps

10/07/2011 12:54 AM

In API 610 10th Ed 5.5.2 allowable nozzle forces and moments for vetical in-line pumps shall be twice the values in table 4 for side nozzles. I found out in vendor drawings they applied 2 times the values in table 4 for VS2 pumps and 1.5 times for VS4 pumps. What would be the reason why they apply different criteria for allowable nozzle? tnx...
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: Allowable Nozzle forces and moments for vertical pumps.

10/07/2011 2:21 AM

Maybe the VS4 pumps are a lighter weight construction that can withstand only lesser forces and moments?

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jcsignature
Active Contributor

Join Date: Sep 2011
Posts: 10
#2
In reply to #1

Re: Allowable Nozzle forces and moments for vertical pumps.

10/10/2011 9:29 PM

Thanks Tornado...I've noticed type of baseplate ( for VS2 is rounded and for VS4 is rectangular). Maybe it is also one of the limiting factors, (Is round design more rigid and can withdstand greater force than rectangular?) I guess you are right regarding weight contructions in withstanding a particular force. Many Thanks..Peace
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