ANSI Class 125 Flanges

Good Morning from Oz,

I have a client who has advised that a filter separator on aviation jet fuel has a rating of "Class 125". I thought this unusua for the reasons below. I have gone back and asked for the pressure rating of these vessels.

My question relates to this classification. I thought that Class 125 was a flat face version of ANSI Class 150 and was generally used for cast iron valves in water service in the petrochem, mining or water industry. Can Class 125 be used in a facility designed to ASME B31.3 on hydrocarbon service? Please offer comments.

Also what is the rating of Class 125 at temperatures below 100F?

Regards

Geoff Stone

Design Detail and Development (a division of Blenray Pty Ltd)

Mail Address PO Box 1351 Castle Hill NSW 1765 Australia Tel Mob 0402 35 2313 Office 02 8850 2313 AH 02 8850 2324
We specialise in pipe network and waterhammer analysis, pipe stress analysis, the design of buried pipelines and thermoplastic pipe systems.

[Non-text portions of this message have been removed] Received on Mon Sep 19 18:15:00 2005