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Mbarry, Your brief explanation of the problem makes giving you an answer very difficult. Many factors come into play. Many production diffusers are simply cast (sand, investment, vacuum, etc). Precision equipment, custom, and one off projects often have the diffuser machined from billet or...

I think we need a little more information. What fluid are you refering to? Are you talking about the heat generated by the implosion itself? Please give us a little more info.

There is alot of good advise in the previous posts. I'm going to wirte this as a previous chief engineer for a couple of pump companies and currently as a design consultant. The manufacturer decides what the minimum flow for the pump is. Guidelines such as the Hydraulic Institute Standards...

I have briefly looked at the responses thus far, so apologize if I am repeating something previously stated. Buying a new motor for a centrifugal pump will probably not incraewse the discharge head 15 ft. Your motor unless it is severly undersized should be run not too far from the nominal...

Vanrdone, Several important topics have been addressed in the above emails. It is a fact that pump companies (generally marketing departments) embelish the truth to put themselves above a competitor. The Hydraulic Institute standards clearly define test methods and the reporting of test data...

I am looking for the calculations or a code/reference source for the calculations for the siesmic loads used to evaluate rotating equipment bases and bolt loading.