Flange Thickness

Why are you asking this question?

Are you trying to make your own valves?

Are you trying to figure out the bolts to buy?

or something else?

Someone out here might be able to offer help or advice if they knew the reason behind the question.

No, i am working as engineer, while designing i found there are 3 different flange thicknesses in ASME B 16.5. i am confused which should be prefered for Valve Flanges?

Flange fitting thickness(from table 9) or flange thickness from table 8.

Refer to paragraph 6.2.2 of ASME B16.34

Ratnaker,

I am really trying to help you. But, you have not answered my question.

"Working as an Engineer" does not mean anything relative to your question.

Now based on the information you have given(ASME B16.5 and Valves) I can only deduce that you are working with a valve (or many valves) 3" (DN80) through 24"(DN600). We do not know the actual size you need or the Flange Rating.

I (we) don't know why you need this information. The Flange thickness is found in any Flange manufacturer's Catalog (http://www.texasflange.com/Texas%20Flange%20PDFs/Catalog.pdf) and is supposed to be in compliance with the ASME B16.5 Standard.

A Valve manufacturer who makes valves will be advised to comply with this ASME Standard. So is you are not making Valves and are only buying or specifying valves you could just look at the Valve Manufacturer's or a Flange Manufacturer's Catalog.

I will repeat:

Refer to paragraph 6.2.2 of ASME B16.34

6.2.2 Flanged Ends. Flanged ends shall be prepared
with flange facing, nut-bearing surfaces, outside diameter,
thickness, and drilling in accordance with ASME
B16.5 requirements for
(a) flanged fittings for Class 150 and 300 valves
(b) flanges for Class 600 and higher values

We can't know for sure at this point but. Maybe, just maybe if you had given this last, very good and very definitive answer first, the conversation would have stopped right there.

Remember not everyone has access to or a copy of these to Standards right in there possession.

My question remains, "Why is this person so interested in the thickness of a flange on a valve?" Just use the thickness given in the catalog I sent him (above).

Thanks,

i was looking for the same.

Thanks again.

Since OP stated he has access to the standard the answer was correct.

Off topic by itself is indeed just a tool for a popularity contest and nothing to worry about! So long!