Developments in bearings, containment shells, magnets and cooling techniques improve reliability
Fig. 1.
Three types of chemical pumps
standardized to ISO
2858
Sealless pumps are increasingly being used to pump
environmentally critical substances. Behind this trend lie
the drastic stiffening of environmental legislation and
increased environmental awareness of customers in industry.
Sealless pumps include canned motor and magnetic-drive pumps.
The latter are employed in almost all areas of chemical
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