Sealless Magnetic Drive Pumps

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INTRODUCTION


In the case of pumps with a conventional drive, it is impossible to seal the rotating part against the static housing without any residual leakage
Even minor quantities of liquid can create safety problems if the media is hazardous.
The statutory regulations set stringent limits in many cases.
Excessive mechanical seal leakage or failures represent over 50% of pump repair incidents.



The Importance of Liquid Containment
Pumps are generally considered to be more expensive than the piping, valves, and related accessories surrounding them, pumps are higher profile when they leak.
To prevent the loss of money in case of costly pumpage.
To maintain the statutory regulations.
To prevent the pump from failure due to highly corrosive liquids.



Function of the sealing device
Seals are designed as controlled leakage devices
They must be permitted to leak in the order of 10 to 20 drops per minute to stay lubricated and to minimize shaft or sleeve wear and damage.



Energy consumption
It comes as no surprise that power is needed to make the seal rotate.

Noise
The choice of seal face materials is decisive for the function and the life of the mechanical shaft seal.
Noise is generated as a result of the poor lubricating conditions in seals handling low viscosity liquids.