3D Printed Valve Part Helps Prevent Cavitation | The Cool Parts Show #56

Water or other fluids moving at a high flow rate through a control valve can be subject to cavitation able to damage pipes downstream. The solution was known decades ago: Divide the flow into an array of many much smaller parallel streams. Unfortunately, the geometry required to realize this effect resulted in a part that was difficult to produce - to the point that an early anti-cavitation product for ball valves was discontinued. Now, additive manufacturing has overcome this challenge. The Emerson company produces its Fisher Cavitrol Hex anti-cavitation trim in an essentially unattended process through laser powder bed fusion, and so far about 600 of these components have been installed in industrial ball valve applications.
This episode of The Cool Parts Show brought to you by Carpenter Additive. www.carpenteradditive.com/
RELATED RESOURCES
More on the Fisher Cavitrol Hex trim: www.emerson.com/en-us/catalog...
Intro to laser powder bed fusion: www.additivemanufacturing.med...
3D printing for hydropower components: www.additivemanufacturing.med...
Fluid flow optimization in an air duct via 3D printing: www.additivemanufacturing.med...
More on valves in Valve Magazine (also from Gardner Business Media): www.valvemagazine.com/
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[@studioeffects]

The Cool Parts Show has become one of my favorite shows to watch, keep up the great work!

[@bunnypeople]

Would love to see a transparent operational version of this!

[@EmilDeadPro]

Cavitation is such a pain in the a** to workaround. Happy to See relatively simple solitions!

[@amitgupta25121993]

Looks so organic, alien & futuristic. I love the design.

[@thatyougoon1785]

Hexagonal discretization is always best😍 Love the design!

[@luistrejo7249]

What an incredible show and incredible video. I'm very amazed about the use of 3d printing in areas related to cavitation and industrial valves and the best of all, it's not just a prototype, it is a commercial and available solution to alleviate those issues. Great content, I'm now subscribed. Keep doing the good work.

[@aimlessweasel]

Wouldn't this be the exact opposite of the faucet aerator? (6:57) I'm surprised that there doesn't appear to be post- processing to improve the surface finish... I get that it's a restrictor, but they did mention using the honeycomb to maximize flow. Speaking of flow, who else expected Destin to pop up and talk about laminar flow at some point? This really seemed like the perfect opportunity for a collaboration. Thanks, as always, for bringing interesting examples of different industries making the most of 3D printing.

[@justaguycalledjosh]

i'm surprised noone put it on r/laminarflowporn yet.

[@MrHoodi1981]

Fisher for long was not in favour of having a anti cavitation trim on a rotary valve as these are not used in high pressure drop applications. Interesting to see that there has been a change in philosophy and Fisher has agreed to a anti cavitation trim design on a rotary valve.

[@BucketClinger]

What about turns? Wouldn't that help deflect in the corners?

[@napalmholocaust9093]

Bees could make tubes that long. All you have to do is gradually increase the space between frames but not so much they build a burr comb. I've seen double the normal from a novice going from 10 frames to 9 and leaving a gap. It was full of honey too, weighed near 20 pounds.

[@jogb9515]

The approximate cost would be interesting, otherwise great vid.

[@weeb3277]

what is it made out of? metal?

[@AdditiveManufacturing]

Yes, metal. Emerson produces the Cavitrol trim in stainless steel and cobalt chrome versions.

[@darisonvincent597]

Why not injection casting is not used ?

[@PB-kx4vv]

John Hart attributes his MS student Kailyn as using this part as a data point in her study of the economics of additive. (kzbin.info/www/bejne/e6fahXiGd86BlcU&feature=share at 32:17) 36 kg. 213 hours. 4 lasers