Flowrox high performance pinch valves proved to be a perfect solution for a Power Generation Water Treatment Plant located in Mpumalanga, South Africa. Six years after the PVE installations no maintenance has been required.
In early 2012 Flowrox and Maduba Mining presented Flowrox pinch valve technology at the South African Power Generation Water Treatment Plant. The plant had outdated Saunders type diaphragm valves which had to be replaced. The old technology was costly to maintain and with regular unplanned maintenance intervals, resulting in high costs. It was time for a proven performance solution.
Identifying Causes of Problems to Offer Better Solutions
Flowrox and Maduba Mining experts visited the site to find out what was causing problems and gather necessary process requirements to offer the most suitable solution
. The main problem was not only highly corrosive application
. There was substantial crystallization which prematurely damaged diaphragms on Saunders type valves causing them to fail prematurely, creating excessive and expensive downtime.
“Flowrox PVE valves are 100% tight shut-off even if solids have built up on sleeve’s inner surface. When compressed, any crystallized particles flake off sleeve’s surface and are washed away by the process medium. The sleeve is the only part in contact with the medium, which is crucial in such corrosive applications. It is the only replaceable part as there is no contamination of bearings or seals which saves money on spare parts,” explains Neil Venter, Area Sales Manager, Flowrox South Africa.
Successful Test Period: We Choose Flowrox
After 3 months of successful testing of Flowrox PVE valve, Flowrox visited the Power Generation Water Treatment Plant to check its performance and get feedback from the plant personnel. It turned out the Flowrox valve was performing so well, requiring no maintenance
, that the plant personnel had forgotten about the valve as it presented no problem.
Excellent performance of Flowrox PVE valve led to plant’s decision in 2013 to standardise on Flowrox pinch valves. Since 2013 most of the old diaphragm valves were replaced by Flowrox PVE valves.