Flange Bolt Torque Value

Dear friends,

Can somebody please help me with a correlation between gasket material and needed bolt torque value for given process? I was asked today to prepare a report on a torque value change when gasket in use, say klingerit type unknown to me, is replaced with 1/8" thick cured rubber on flange face. I am aware that the relation is fairly if not very complicated one, but I need something to start from.
Any help would be highly appreciated.

Best Regards,

TMN

Dear friend, please refere Pressure Vessel Design Manual by Dennis R. Moss. There you will find procedure for the same.

Thanks.

@ mukesh_enjoy

Thanks for your help.

Best Regards,

TMN

- See Procedure 2-10 "Bolt Torque Required for Sealing Flanges", Page 59 of book " Pressure Vessel Design Manual by Dennis M. Ross": [url]http://www.4shared.com/file/138032856/9504f44/Pressure_Vessel_Design_Manual_.html[/url]
- Also, see "Chapter 6. Mechanical" of book "LANL Process Piping Guide for ASME B31.3": [url]http://www.4shared.com/file/139844592/773f5d17/LANL_Engineering_Standard_Manu.html[/url]

Thanks again for all your great help.

Best Regards,

TMN

Nice contribution "Abdel Halim Galala"

There is a dedicated and clear chapter about bolt torque, bolt pretension load with or without bolt greasing , with wrench or controlled tightening in this standard
[B][COLOR="Blue"]API 6A[/COLOR][/B]

I believe it is a standard about Christmas trees for oil industry

Unfortunately I do not have a copy here , but I am wiling to talk in detail if I find it.

if someons has this standard please upload it , than we can talk further

I would recommend ASME PCC-1 Guidelines for Pressure Boundary Bolted Flange Joint Assembly:

[url]http://ifile.it/gr2kohm[/url]

And secondly for a brief synopsis - Appendix S of ASME Sec VIII-1

[QUOTE=FATHI;75018]There is a dedicated and clear chapter about bolt torque, bolt pretension load with or without bolt greasing , with wrench or controlled tightening in this standard
[B][COLOR="Blue"]API 6A[/COLOR][/B]

I believe it is a standard about Christmas trees for oil industry

Unfortunately I do not have a copy here , but I am wiling to talk in detail if I find it.

if someons has this standard please upload it , than we can talk further[/QUOTE]

API 6D Pipeline Valves - 2002: [url]http://www.4shared.com/file/159280376/c73a9885/API_6D_-_2002_Pipeline_Valves.html[/url]

Dear Abdelhalim
I am Looking for API 6A
repeat [B]A[/B] and not D

So Iif you have it

Chokran

Friends here is the link for API 6A

[url]http://ifile.it/ajy265z[/url]

Hope you will get your answer.

[QUOTE=FATHI;75128]Dear Abdelhalim
I am Looking for API 6A
repeat [B]A[/B] and not D

So Iif you have it

Chokran[/QUOTE]

The available is "API 6FA" Fire Test for Valves - 1994, please let me know if you need it.