Flange Bolt Torque Value

[TMN]

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

[mbc.engg]

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

Thanks.

[TMN]

@ mukesh_enjoy

Thanks for your help.

Best Regards,

TMN

[Abdel Halim Galala]

- See Procedure 2-10 "Bolt Torque Required for Sealing Flanges", Page 59 of book " Pressure Vessel Design Manual by Dennis M. Ross":

[link Point to another website Only the registered members can access] - Also, see "Chapter 6. Mechanical" of book "LANL Process Piping Guide for ASME B31.3":

[link Point to another website Only the registered members can access]

[TMN]

Thanks again for all your great help.

Best Regards,

TMN

[tinku]

Nice contribution "Abdel Halim Galala"

[FATHI]

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
API 6A

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

[tony_black]

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

[link Point to another website Only the registered members can access]
And secondly for a brief synopsis - Appendix S of ASME Sec VIII-1

[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
API 6A

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

API 6D Pipeline Valves - 2002:

[link Point to another website Only the registered members can access]

[FATHI]

Dear Abdelhalim
I am Looking for API 6A
repeat A and not D

So Iif you have it

Chokran

[tinku]

Friends here is the link for API 6A

[link Point to another website Only the registered members can access]
Hope you will get your answer.

[Abdel Halim Galala]

Dear Abdelhalim
I am Looking for API 6A
repeat A and not D

So Iif you have it

Chokran

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