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


Plan 53B with continuous source of nitrogen not rechargeable

Plan 53B with continuous source of nitrogen not rechargeable

Plan 53B with continuous source of nitrogen not rechargeable

please can we use seal plan 53B bladder connected to available nitrogen tie in in plant.
instead of charging nitrogen by bottles

RE: Plan 53B with continuous source of nitrogen not rechargeable

No. The pre-charge pressure for the bladder is lower than the operating pressure once it is placed into service. It functions based on the fact that the bladder was compressed when the pressure was increased in service. As fluid is lost from the system, the bladder will expand to push more fluid into the system so that differential pressure is maintained across the seal faces. If you had a permanently connected supply of nitrogen pressure, the bladder would not be compressed and would not function properly to maintain the seal differential pressure. Why would you want to have a nitrogen supply connected to the bladder? If you have leaks and are losing pressure, you should find and fix the leaks.

Johnny Pellin

RE: Plan 53B with continuous source of nitrogen not rechargeable

I may have misunderstood the question. You could connect the bladder to your plant nitrogen system and pressurize it to the pre-charge pressure. Then, you would block in the nitrogen supply and pressurize the barrier fluid side of the system. You would need to isolate the nitrogen supply away from the bladder before you pressurize the barrier fluid or you would have the problem I described above. Any additional charge added to the bladder would need to be made with the pump shut down and the barrier fluid depressured.

Johnny Pellin

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


eBook - Rethink Your PLM
A lot has changed since the 90s. You don't surf the Web using dial-up anymore, so why are you still using a legacy PLM solution that's blocking your ability to innovate? To develop and launch products today, you need a flexible, cloud-based PLM, not a solution that's stuck in the past. Download Now
White Paper - Using Virtualization for IVI and AUTOSAR Consolidation on an ECU
Current approaches used to tackle the complexities of a vehicle’s electrical and electronics (E/E) architecture are both cost prohibitive and lacking in performance. Utilizing virtualization in automotive software architecture provides a better approach. This can be achieved by encapsulating different heterogeneous automotive platforms inside virtual machines running on the same hardware. Download Now

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