The Seadraulics HPW90 is an incredibly high flow high flow / low pressure water jetter. The Dynaset pumps have proven reliability and impressive pumping capabilities. No other pumping system offers the same power density and reliability.
Most work class ROVs will run this water jetter on there auxiliary pumps, but smaller work class ROVs will have to utilize the smaller nozzles to ensure the fully 90 bar is achieved to maintain cavitation effectiveness.
The cavitation process creates Nano voids in the water that implode when they hit the cleanable surface. The voids create high energetic shockwaves when they implode, which removes dirt, fouling and deposits attached to the cleanable surface. A cavitation jet reaches further than conventional high-pressure cleaning and is most effective at a safe distance from the nozzle. Cavitation cleaning requires a lower water pressure and is therefore safer and more efficient for delicate surface treatments. Cavitation causes the jet to become more of a cone allowing for better all round cleaning than an otherwise needle jet would provide. Lower pressure cavitation water jetters loose effectives as the depth increases.
This model of pump utilizes a specially designed nozzle to induce cavitation at a point out from the nozzle end, and comes with several different nozzles that allow throttling of the pump to suit smaller ROVs hydraulic power.