×
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

pressure regulators

pressure regulators

pressure regulators

(OP)
Can water pressure regulators (as purchased) be used for nitrogen? I see references to other regulators valid for air, water, and hydraulic oil but the one we purchased stated just for deionized water and diesel fuel. Please help this old engineer, far removed from my school days, understand the flexibility of such devices.

Thanks,

John Paulk

RE: pressure regulators

It would probably leak a bit, and not work across the rated pressure/flow range quite as well as for its rated fluids. But the seals are not likely to be affected by nitrogen, if that is what you were asking.

RE: pressure regulators

What's the nitrogen source?

RE: pressure regulators

(OP)
I guess I'm wondering if the stated pressure range would be the same for nitrogen as it would be for water.

The nitrogen source is from a liquid nitrogen tank with evaporator giving a 30 - 35 psi header pressure.

RE: pressure regulators

If you mean design pressure, that is generally similar, however good operating pressure ranges may be very different. I'd say not a good idea. Effective operating pressure and flow ranges could vary widely. N2 is far less dense than water, thus the same valve open percentage would not result in similar flows or pressure drops. Same outlet pressure would require vastly different inlet pressures for those very different fluids. Verify the suitability of the valve with the manufacturer.

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