How does a magnetic coupled pump work?
Instead of a direct shaft (rigid or coupled) from the driver to the impeller, a virtual coupling created by the magnetic fields transmit the required torque. In this manner there is no DIRECT shaft or mechanical connection between the driver (motor) and the driven (impeller) elements. In order to contain the liquid in the pump and to eliminate any type of mechanical seal, therefore called seal-less, a barrier or cup is placed between the two rotating magnetic assemblies.