×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

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.

Students Click Here

Double Dump Valves

thread408-512178

Double Dump Valves

Double Dump Valves

(OP)
We are having reliability issues with our double dump valves. Currently they are Posiflate inflatable seal valves. The process is a somewhat abrasive powder. The valves are cycled every 8 seconds and have a sequence where the chamber between the valves is filled, then the top valve is closed and the chamber is pressurized, then the bottom valve is opened to shoot the product into a pneumatically conveyed line to the rest of the process. Does anyone have a recommendation for a good replacement for these Posiflate valves?

RE: Double Dump Valves

Good luck on that one! A dry, abrasive powder would have to be one of the most difficult services for a valve of any description. Certainly avoid any with a cavity where product can become trapped and compacted.
My initial thoughts were for a pinch valve, but with the frequency of operation I doubt that they would last any time at all. A bit more detail on the installation would assist. The size, the orientation, pressures, mass/density of slug of powder etc. etc. I would suggest that you really need to look for a bespoke solution.

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

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. 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