Quick acting and high cycle valve 1

[controlnovice]

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.

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This is normally the space where people post something insightful.

 

[sreid]

You might consider using an air operated pinch valve.

http://www.redvalve.com

 

[itsmoked]

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

 

[ozmosis]

Or possibly a magnetic valve. Expensive but very fast operating and very precise modulation:

http://www.us.sbt.siemens.com/hvp/components/products/valves/magneticvalveactuator.asp

 

[israelkk]

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.

 

[ozmosis]

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

 

[JimCasey]

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.

 

[Ashereng]

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
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