Vanes made of the bearing polymer Hitemp 150 have lasted three times as long as traditional vanes in servicing company Septic Tanks (Pty) Ltd’s vacuum rotary pump, a Broom B35. The pump is used to create a pressure difference that sucks up the waste liquids from septic tanks. Pumps involved in such operations should not come into contact with sewage, ideally. However, where septic tank pumping is not monitored continuously, overflow from the transport truck can make its way to the pressure vessel and on to the vacuum rotary pump. The vanes in these pumps thus need to be cleaned. In addition, the vanes need to be able to operate at high temperatures, since the pumps can overheat due to operation for long periods. Armed with information about vane operating requirements, when the original laminate vanes in Septic Tanks (Pty) Ltd’s Broom B35 pump needed replacing as frequently as every six months, the waste-sector servicing company turned to Vesconite Bearings, the maker of various polymers, for a solution to this unique operating environment. Vesconite Bearings technical sales consultant Phillip de Villiers recommended Hitemp 150, an engineered polymer that is wear-resistant and c...