×
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

Bearing material

Bearing material

Bearing material

(OP)
Hi ,
I am looking for a bearing material , to be used in a vertical Pump , The water to be pumped is 140 degree f. The water has high level of sulfate (1087 mg/l) and chloride (879 mg/l) Total hardness is 1630 mg/l. I was looking into using PEEK or Thordon material. Anybody has used / or can comment on this application.
Thank you

RE: Bearing material

We use a Dupont material called Vespel in some similar services.  We use it in several multi-stage horizontal boiler feed water pumps, a dozen or more vertical volute pumps in oily water sewer service and a few vertical turbine pumps in cold condensate service.  We have had very good luck.  PEEK tends to be expensive and I have never tried the Thordon material.  I am not in my office and don't recall the exact grade of Vespel we use.  But anyone that sells the stuff could direct you to the best blend for your service.  

RE: Bearing material

www.graphalloy.com

I have had good experience with graphalloy material in similar vertical pump applications.

RE: Bearing material

While graphalloy has been around a while and has proven itself as a bearing material, my experience with Vespel in some boiler feed pump wear rings and interstage bushings has been excellent. None of the mentioned materials are cheap but the  Vespel cost is really high.  

RE: Bearing material

Get hold of your nearest Flowserve Seal Division Representative.  Greentweed provided material and design for a non gauling material that upgrades many vertical pumps. Flowserve Seal Division is the authorized distributor of this material.  

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