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

Valve Air Flow Test

Valve Air Flow Test

Valve Air Flow Test

I’m working on a concept for a development test to measure flow characteristics of a valve (delta-P vs. flow rate, discharge coefficient). I wanted to ask for some advice on test concept approach. This is just a proof-of-concept type test to help us determine if we're on the right path for the conceptual design.

The valve is a spring loaded dual-disc check valve that acts as a vent valve allowing air to vent to outside standard conditions from a compartment while preventing air flow from outside into the compartment. The expected max flow rate is about 2000 CFM and an estimated pressure drop of about 1 psi.

The test concept right now is to use a blower fan to push air into an enclosure where the valve is mounted and air escapes through the valve to ambient. This seems like it would work just fine, but I’m having trouble finding a blower that can provide the flow rate at these pressures. It seems that most are either not high enough pressure (inches of H2O levels), or are large scale industrial size blowers that are overkill and too expensive for what we're after right now.

Any advice on test concept for something like this, or lessons learned from anyone who has done this sort of testing before would be greatly appreciated.


RE: Valve Air Flow Test

1 psi * 2000 cfm => 144 lbf/sq-ft * 2000 cu-ft/min*(1min/60sec) => 4800 ft-lbf/sec or just under 9 Hp or 6.5 kWatts.

No doubts as to why there are industrial sized equipment involved.

That's just the work that goes into the air. Add in inefficiency and it's probably closer to 15 hp or 12 kW for the drive motor.

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


Research Report - How Engineers are Using Remote Access
Remote access enables engineers to work from anywhere provided they have an internet connection. We surveyed our audience of engineers, designers and product managers to learn how they use remote access within their organizations. We wanted to know which industries have adopted remote access, which software they are using, and what features matter most. Download Now
eBook - Managing the Context of Product Complexity Using the Digital Twin
Keeping track of changes to complex products is difficult—think Aerospace & Defense equipment, new generations of commercial aircraft, and software-based automobiles. A new way to managing the digital context of the physical product is required and the answer is the Digital Twin. This ebook explores the opportunity available for Operations and Maintenance for the Digital Twin. Download Now
White Paper - Trends in Industrial Filtration
Substantial progress has been made in filtration technologies in recent years. New filter media materials, designs and processes have led to filters that are more efficient, reliable, compact and longer lasting. This white paper will discuss the various trends that are impacting operational responsibilities of MROs today and the resources that are available for staying up-to-date on the latest filtration solutions. 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