Hybrid shell

Magnetically driven, sealless pumps from M Pumps S.R.L (previously 3M Pumps) and available from Pump Engineering, are said to offer leakfree, low-maintenance and reliable pumping, especially when the process involves aggressive, corrosive fluids.

To counter eddy current losses, M Pumps has produced a hybrid rear shell design based on an inner shell made from Hastelloy C and an outer shell which consists of a carbon filament wrapped around the steel outer shell. The result is a composite rear shell construction with the properties of a non-metallic material.

Trials have shown its resistance to temperatures above 300°C, pressure resistance to 500 bar and a reduction in eddy current losses by up to 90%.