×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

flexitallic per crush by valve weight?
2

flexitallic per crush by valve weight?

flexitallic per crush by valve weight?

(OP)
I have a situation with main steam flange connection. The flexitallic gasket has beeen in place with a 1200+ lb valve on it for weeks with no torquing. Is this a problem when I later torque the joint.

RE: flexitallic per crush by valve weight?

Do a quick calculation of the compression or clamping load generated by the flange bolts when fully tightened. You will find that the bolts generate a clamping force that is significantly higher than the weight of the valve. To the point where the weight of the valve is negligible.

RE: flexitallic per crush by valve weight?

But .... The suspended weight of the valve, supported irregularly (not uniformly tightened and then star-tightened to full torque) by bolts irregularly around the flange for several weeks, probably - not not definitely - has distorted the flex gasket. May have torn it in places.

i'd change the gasket before tightening and torquing for final fitup.

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!


Resources