×
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

Shut off valve for abrasive material

Shut off valve for abrasive material

Shut off valve for abrasive material

(OP)
Hi folks,

I am looking to source a shut-off valve for a highly abrasive material,(and I mean highly abrasive).

At this stage I want to look at designs etc.

Any comments appreciated.

Speedy


RE: Shut off valve for abrasive material

Let me suggest a diaphragm valve to "test the water" if this is anything close to what you require.

http://www.plastomatic.com/bsd.html

RE: Shut off valve for abrasive material

More information would be desirable to receive meaningful answers;
e.g.   dry; wet ( if so % solids)     temperature    size   any chemical / corrosive complications    quantity / volume    intermittent / contiuous   critical application /
etc
mac

RE: Shut off valve for abrasive material

speedy,

What macmil said.

RE: Shut off valve for abrasive material

A number of options.

Red valve make a series of rubber valves for slurry service. These are pinch valves.

Valve technologies have a ceramic coated ball valve designed for severe service. This has been used on slurries and boiler blown down.

The abrasion intensifies as the valve closes and the velocity increases for the last portion of closing.

RE: Shut off valve for abrasive material

Another possibility:

www.mogas.com

Cheers,
CanuckMiner

RE: Shut off valve for abrasive material

www.unicast.ab.ca
 Gerry Lesperance, he should be able to deliver an abrasion resitant valve as he builds a valve with abrasion resistant materials.(high chrome irons). Please remember to  refer my name to him.

RE: Shut off valve for abrasive material

I have designed ball valves for use in the Alberta oilpatch, Tar Sands Projects out of Fort McMurray.  The slurry is sand and can have trace sour gas with the tar bitumen.

You're talking metal seated, trunion with a boronized ball.  The ferric boron matrix is integral to the steel and therefore does not flake or chip off.  The only thing you need consider is sensitivity to shock impact, the ball tends to shatter like glass if hit with enough energy.

Ball geometry is also a factor since the boronizing process is run at elevated temperatures.  You risk loosing spherical diameter, so the ball must be packed in such a fashion as to minimize sag under it's own weight.

I found the Grove product line ball geometry to favor the boronizing process, well up to NPS 36.  Expect seat lifetime to be approximately 66% to 75% that of a clean environment.

Hope this helps.

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

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