Contact US

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

Diaphragm Pump Problems

Diaphragm Pump Problems

Diaphragm Pump Problems

My question is regarding the pumping of dregs from a green liquor clarifier.  We currently use ODS pumps (plunger type diaphragm pump from Dorr-Oliver, now GL&V).  We constantly have leaks, diaphragm failures, and solenoid failures with these pumps.  Does anyone have a suggestion for a better type of dregs pump (discflo, pitbull, other?)?  Or, does anyone have any best practices as far as preventative maintenance for ODS pumps?  Thanks in advance!


RE: Diaphragm Pump Problems

I can't tell you much about whether we like the pump or not since I don't work the area but we use a  Allis-Chalmers - F4H1+731 - 6" X 4" X 8.5" for our Dregs transfer from green liquor clarifier.  Checking maintenance history it appears / semi / yearly PMs the odd change out etc so I would guess not a bad pump.

RE: Diaphragm Pump Problems

Hi There,

Without knowing your actual pump duty it is difficult to comment.

The Pitbull is something a little special as it has no diaphragms to fail & is a very simple yet effective design.

They have an excellent website: http://www.pitbullpumps.com which shows just what the pumps are capable of:

I have seen one in action & it is very impressive.



RE: Diaphragm Pump Problems

PD pumps were used to minimize the shear to the dregs which would minimize particle size reduction. Now that dregs wshers have been replaced by precoat filters, most mills now use a standard centrifugal pump in this application.

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


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