×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

(OP)
Dear all,

Can you please clarify, how to connect the ASME flanges (ASME B16.5 150#) & EN-1092-1 PN10

ASME B16.5 : PCD- 635mm whereas in EN-1092-1 PCD- 620mm
Bolt holes Dia: 26mm EN1092-1 PN10
Bolt holes Dia: 32mm ASME B16.5

Please resolve this matter.

RE: How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

Two different standards - They will not mate.

Anything else if defeating the objective of a standard.


*** Per ISO-4126, the generic term
'Safety Valve' is used regardless of application or design ***

*** 'Pressure-relief Valve' is the equivalent ASME/API term ***

RE: How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

(OP)
Is there any way to rectify these?

RE: How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

Cut one of them off and weld on a matching flange or just design the pipe spool this way. Not uncommon.

No other way other than a flange adaptor / small pup piece with an EN flange one end and an ASME class 150 flange the other end.

You CANNOT "adapt" one flange to meet the PCD or bolt size of the other. This is not allowed and is very poor practice.



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

RE: How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

I have seen a thick flange ring which was tapped with holes to allow the studs to go in between each other ( assuming the number of bolt hols is the same), but it looks horrible and is defiantly a last resort.

what size flanges are these?
How many bolts in each one?

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

RE: How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

(OP)
Thanks for your reply.

Its on the blower discharge end. (BS EN 1092-1 PN10) drilling & the ordered is 20" SS flange drilled to ASME B16.5 150#.
No. of holes are same.

Thank you.

RE: How to connect flanges drilled with EN-1092-1 & another with ASME B16.5 drilling (20")

So order a 20" SS flange drilled to BS-EN 1092-1 PN 10.

There is no other proper way to do this. You can only ask the supplier to give you a credit for the other flange when you swap it for the proper one. Maybe he says yes, maybe he says no. But that's life and why design checking is important, sometimes you make a guess and it turns out wrong.

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

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close