×
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

What could a "NBSF" pressure fitting be?

What could a "NBSF" pressure fitting be?

What could a "NBSF" pressure fitting be?

(OP)
I'm designing a portable field standard that will measure fluid pressures up to 40,000 psi.  The Marketing guys have suggested a pressure fitting interface of 1/4" NBSF for the units that are rated between 15K psi and 40K psi.  I've never heard of this type fitting and have been unable to turn anything up in searches for it.

Is there an obscure pressure fitting type by that description?  Why would they want to use an obscure type (all our other high pressure instruments use HIP fittings for the interface of those pressures)?  Could they have incorrectly transposed some of the letters?

Thanks for any help you can give -

Tim

RE: What could a "NBSF" pressure fitting be?

tluxon, Go back to the marketing guys and have them define what it is and to find a manu'f to contact you. 1/4" NBSF?
Could it be a 1/4" Nominal Brand Specification Failure?

saxon;)

RE: What could a "NBSF" pressure fitting be?

NBSF = Never Buy Suspicious Fittings?  First mistake is using 'pressure fitting' and 'marketing guys' in the same sentence, haven't you ever read Dilbert?   

Only thing I've heard of even close is the National Building Specifications, some sorta setup in Britain where they have a central library of construction specs that can be used to build project specs from.

RE: What could a "NBSF" pressure fitting be?

tluxon-

I'll throw out a guess: Nominal Pipe Size, Female or NPSF. Easy for some marketing weenie to hear "NBSF". I imagine this would be a threaded connection - but for such high pressures???

jt

RE: What could a "NBSF" pressure fitting be?

jte,

"NPSF" actually may be a good guess, nevertheless this abbreviation typically stands for "National Pipe, Straight, Fuel".

RE: What could a "NBSF" pressure fitting be?

Unless the marketing guys can define a source they may be blowing smoke or have their acronyms mixed up. Look at the different interfaces that are used in the gauge industry for high pressure gauges. 40,000 psi is a dangerous pressure, it would be better to contact people who sell products that handle that pressure than to listen to marketing.
NTPF is a dry seal pipe thread, and will work at higher pressures, but I don’t think it would be the best choice at your pressure. Be sure to test what ever you chose.

RE: What could a "NBSF" pressure fitting be?

Check high pressure hydraulic piping/valve manufacturers like Autoclave & Butech. They are interchangable. Butech is cheaper but their product selection is limited. They have angle valve but not straight valve. Note the difference service classification between low, medium & high pressure & the special required threaded connection for each class.

RE: What could a "NBSF" pressure fitting be?

Let me also try to have a wild guess.

Will it mean '1/4" Nominal Bore size, Female', similar as jte suggested, or
'1/4" Nominal Bore, Single Flanged' for high pressure connection.

Please tell us the answer after you clarified with your Marketing guys

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