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The installation of Vesconite Hilube polymer wear rings can result in electricity savings that more than pay for the wear ring. This was the result of a study by a large pump original equipment manufacturer (OEM) that compared energy usage on a typical submersible pump when a Vesconite Hilube wear ring was in place and when a stainless steel wear ring had been installed. Vesconite Hilube is a low-friction wear-resistant polymer. Wear rings made from the material are designed to seal the pressure leakage of the liquid between the inlet and the impeller and the pump casing and should result in a higher pumping efficiency due to lower by-pass.


Quick payback on polymer wear rings

Vesconite Bearing technical pump consultant Phillip de Villiers was, therefore, pleased when the pump OEM’s results independently proved Vesconite Hilube’s ability to improve pumping efficiency and decrease electricity usage. The study showed a 0.11kW/h energy reduction when the operation of the pump with a large diameter stainless steel wear was compared with the operation of the same pump type with a dimensionally-identical Vesconite Hilube wear ring.

The Vesconite Hilube polymer wear rings

Assuming the Vesconite Hilube wear ring’s use on an industrial pump, operating 24 hours a day, 365 days a year, the electricity savings from installing a Vesconite Hilube wear ring add up, particularly when the pump is operated in jurisdictions in which electric charges are high.

generation - which reached 12Gt in 2010 - as well as an awareness that pumps account for 10% of global electrical energy consumption, technological interventions are valued by pump manufacturers and pump users.

In the specific pump that was studied by the OEM, the wear ring would have a three-month payback even where a low electricity cost was assumed, notes De Villiers.

They are also of interest to state and national governments that are interested in reducing carbon emissions to keep global warming under 1.5°C.

He adds that electricity savings for a five-to-ten stage submersible pump can be significant if the electricity savings of each stage are added together.

Vesconite, Phillip de Villiers, +27 (0) 11 616 1111, phillip@vesconite.com

With concerns about global CO2 emissions from electricity

Pipes, Pumps and Valves Africa - Mar/Apr 2020


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Pipes, Pumps & Valves Africa Mar-Apr 2020  

Pipes, Pumps & Valves Africa Mar-Apr 2020