×
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

Natural Gas Pipe Sizing

Natural Gas Pipe Sizing

Natural Gas Pipe Sizing

(OP)
Hi,

Does anyone know whether the hybrid pressure method for gas pipe sizing as described in ANSI Z223.1-127, can be used for pressures above 2 psi upstream of the regulators?

Thanks a million.

RE: Natural Gas Pipe Sizing

I do not have a copy of the NFGC, but the International Fuel Gas Code describes the hybrid method as sizing the piping from point of delivery to the most remote regulator and then sizing the piping from the regulator to the most remote outlet. I would assume the methods would be the same

This method, which splits the system into distinct pressure regions, can be used regardless of the pressures in the piping, either upstream or downstream of the regulator.

If using tables, be careful to stay within the pressure drop constraints listed for the tables. But, be careful, even to do that.

I generally do not use the tables, since sometimes the above constraints list pressure drops in excess of 40% of the inlet pressures and the equations used to generate the tables are typically constrained to no more than 20%. So I would question any table that exceeded 20%.

RE: Natural Gas Pipe Sizing

(OP)
PEDARRIN2 thanks so much.
I use the equations rather than the tables which as you mentioned are limitting.

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