×
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

Quick acting and high cycle valve

Quick acting and high cycle valve

Quick acting and high cycle valve

(OP)
A customer of ours has an application requiring quick acting and high cycle valves.

Valves will be 1", product is up to 6000cp viscosity, about 8.2 gal/min, cycling on/off 48 times/min (so quick on/off action is desirable also) for 24/7.  This is almost 1 million operations per week.  One of the products has calcium carbonate in it so we're also concerned with abrasiveness of the product.  

My first thought is a solenoid valve.  Any other ideas?  My experience is in process, not manufacturing, so I've never run across something like this.

______________________________________________________________________________
This is normally the space where people post something insightful.

RE: Quick acting and high cycle valve

You might consider using an air operated pinch valve.

http://www.redvalve.com

RE: Quick acting and high cycle valve

Yes, controlling the flow sounds like it would make more sense than ON/OFF in this case.

Barring that perhaps multiple valves in parallel to distribute the cycles across several valves.

BTW that's only 1/2million cycles a week.flush

Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com

RE: Quick acting and high cycle valve

sed2developer

Magnetic valve is a solenoid valve. The main problem here us the 24/7 the sealing face may not hold for long time.

controlnovice

One very impotant info is missing - the differential pressure across the valve orifice.

RE: Quick acting and high cycle valve

It pays to read the post properly! Thanks for picking that up israelkk.

RE: Quick acting and high cycle valve

Kaye & McDonald (Now part of Cashco) offer a dome-loaded valve with polyurethane (Poly-U tm) seals.  
The polyurethane is abrasion-resistant, and the valve is very quick-acting.  There is not much inside the valve to be abraded.  These are the valves that they us on the "dancing waters" fountains because they are so quick-acting.  

If you want to be a bit more conventional, you could look at a Worcester ball valve with a hardened ball and Ultra-High Molecular weight polyethylene seats.  The UHMWPE seats are very abrasion resistant and the Worcester actuator has been documented in low-load high-cycle applications to go as many as 14 million cycles.  

RE: Quick acting and high cycle valve

At a million cycles per week, even a 14 million cycle valve will only last a few months.

Parallel valves (maybe 2 or 3) would allow cycle distribution, and an easy way to replace valves.

Regardless of how good a valve is, after 14 million cycles, you will need to replace something.

"Do not worry about your problems with mathematics, I assure you mine are far greater."   
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

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