Mag-drive pump
Mag-drive pumps are seal-less pumps whose shaft torque is transmitted via a magnetic coupling drive (see Magnetic coupling) with permanent magnets by means of magnetic induction.
To prevent any leakage to atmosphere through a containment shroud failure during operation, mag-drive pumps are sometimes designed with double-walled containment shrouds and a leakage monitor. See Fig. 1 Mag-drive pump