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!

*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.

Jobs

Natural Gas Pressure Regulator Inlet Pressure vs Outlet Pressure

Natural Gas Pressure Regulator Inlet Pressure vs Outlet Pressure

Natural Gas Pressure Regulator Inlet Pressure vs Outlet Pressure

(OP)
When the inlet pressure falls close or equalizes with the outlet pressure what happens to the flow rate though the regulator?
At what differential (pressure inlet vs outlet) the valve will fully open?

RE: Natural Gas Pressure Regulator Inlet Pressure vs Outlet Pressure

It depends on the specific design of the regulator. In an ideal regulator, the flow and output pressure will stay constant as long as the inlet pressure is adequate. But most regulators have "droop" which is what you are asking about. "Instrument grade" regulators have pneumatic amplifiers, which consist of a very sensitive pilot valve that controls the position of the main valve.

If you study the linked data sheet you can learn a lot about regulators.
https://www.industry.usa.siemens.com/automation/us...

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


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