ASME B16.5 Pressure Ratings

[Mingus79]

Hello All,

A discussion with one my friends left me confused other day. I always assumed/studied the pressure units in ASME codes as bar(g).

For example when you check the table for a pressure rating on ASME B16.5 table, the value is indicated as 17,7 bar. As far as i know these are gauge values, not absolute.

Am i missing a point here?

Thanks for your kind answers.

 

[LittleInch]

Section 2.1 os ASME B 16.5 states

"Pressure–temperature ratings are maximum allowable
working gage pressures in bar units at the temperatures in degrees Celsius... [my underline and bold]

The key word here being "gage" - or "guage" for us non americans - thus the ratings are barg.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Mingus79]

Thanks for the quick and valuable reply.

I have searched the document with keyword "gauge", as you mentioned there was no match

Cheers.

 

[racookpe1978]

Be very careful with assumptions. 8<)
Just as soon as you think you know they are assuming you understand, "somebody" starts slipping in vacuum tests and pressures.