Universal Mag Drive

Universal Mag Drive

Glossary Right Side Image
Animation of magnetic coupling of a sealless mag drive pump.
Abbreviation / Acronym
UMD
Definition

Série de pompes à engrenages internes et à entraînement magnétique sans joint, nommée ainsi en raison de ses dimensions identiques aux modèles Viking Universal comparables.

Viking Pump’s Universal Mag Drive is a series of sealless mag drive internal gear pumps. They are named as such due to their shared dimensions with comparable sized Viking product series in the Universal product line.

Click here to view a video about Viking Pump’s Universal Mag Drive product series.

A sealless mag drive pump is comprised of two independent shafts. One shaft connects to the drive equipment (motor, reducer, etc.) and the second shaft connects to the pumping elements (rotor, gears, etc.). A magnetic coupling transmits the rotation of the drive shaft to the driven shaft inside the pump.

Sealless mag drive pumps can be any number of pump technologies including internal gear, external gear, vane, centrifugal and others.

Click here to view a video about how internal gear mag drive pumps work.

 

Image of the two shafts of an internal gear sealless mag drive pump.

At the core of Universal mag drive pumps is the magnetic coupling. There are two assemblies that contain an equal number of magnets with alternating poles. The first, inner magnet assembly, connects directly to the pump shaft while the second outer magnet assembly is driven by the motor. The attraction of opposing polarity magnets align the inner and outer magnet assemblies, which in turn enables the rotating outer magnet to transmit its rotation to the inner magnet and pump shaft assembly. This then rotates the pump internals, creating flow.

Animation of magnetic coupling of a sealless mag drive pump.

 

A containment shell - called a canister - fits around the inner magnet, keeping the liquid inside the pump without the use of a dynamic seal.

 

Image of the canister of a sealless mag drive pump.

Sealless mag drive pumps offer the highest level of liquid containment and are favored in applications that are difficult to seal, pose environmental or health risks, or where the longest possible seal life is desired.