Improving resistance against abrasion

Improving Wear Resistance in Rotary Valves - Improved Resistance, Improved Longevity

Industry: Mining & Minerals

The problem:

  • Our customer required Rotary Valves to handle 3.5t/hr of Nickel powder.
  • Due to the abrasive nature of the powder, the valves needed to withstand the wear that it causes.

The requirement:

  • To provide a pair of Rotary Valves that could handle the high throughput and better withstand the wear and tear caused by the product.

The solution:

  • We took our standard cast iron rotary valve and applied a tungsten carbide coating to the internal surfaces of the body and end covers. As well as superior wear resistance, Tungsten Carbide coatings provide excellent resistance to oxidation thanks to their incredibly strong bond strength and low porosity which seals off the base materials from its environment. In addition to this, we fabricated heavy duty rotors in stainless steel with thicker vanes and replaceable steel tips. Air purged seals and end cavity purge further help reduce wear to the valves.

The result:

  • The improved wear resistance, and valve longevity, reduced the frequency at which they were being replaced, saving maintenance time and cost.

Working in collaboration, creating tailored solutions, engineering process savings and efficiencies.

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What our customers say

"I wanted to congratulate the entire team at Rotolok on the initial sales consultation, after sales support, technical documentation and most importantly the quality and reliability of your finished product. Notably the two ATEX certified rotary valves we bought from you last year have been faultless!" Rob Rogers, Technical Director, Gough Engineering
"You delivered the first 2 rotary valves in around 3 weeks, which was not only 1 week sooner than you quoted me, but an impressive 17 weeks faster than I was quoted by a competitor of yours!!” Richard Stanton, RAS Extraction Ltd
“I would like to take this opportunity to express my thanks to every staff member at Rotolok for their sincere support throughout. I would definitely recommend Rotolok to be considered on our future projects where advice is sought” Mechanical Engineer, Multi-National Project Management Consultancy
"We have been working with Rotolok for many years, throughout we have been overwhelmed with the product quality and especially the communication." General Manager, Major OEM Supplier, Lithuania
“The RotoFlex Valves arrived today and I could not be happier with them!” James Saker, Maintenance Technician at DDW, The Color House
“You may not know this but I bought twenty 250 drop through seals from Dan McCauley when he first started up in the mid to late 70’s. I think I picked them up from his home near Gatwick- they are still running perfectly!!” Duncan Marston, Former Director at C Marston and Sons (Now known as Heygates, Icklingham)
"Thank you so much for the prompt response and great support as always!” Multinational Consumer Goods Manufacturer
"I was really happy about the service and the fast responses I received.” Mischa Ruf, Process Engineer, Ingelia
"The specification was exactly as ordered and the Rotolok valve worked very well in every moment of production. We appreciate the interest to deliver the perfect product for our application." Alessandro Gonzalez, Mechanical Designer, IRIS S.R.L, Italy