Choke Valve erosion index

[cam72]

Hi

What is meant by erosion index with relation to Choke Valve? I am doing evaluation for choke valves for oil and gas chokes. One of the vendors has indicated erosion index values for each choke valve. My question is

1.Is there a maximum limit of erosion index? Is it defined in any standards?
2.Erosion index value of 125 or 30, what dose it indicate actually? Dose it quantify erosion of trim / body etc over a period of time?
3.How erosion index is compared and with what?
4.Other vendors have not indicated these values; shall this parameter be taken into evaluation?

Thanks.

 

[hsbcn]

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http://www.eng-tips.com/viewthread.cfm?qid=213719

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