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Magnetic Drive Pumps


Magnetic Drive Pump Overview

The most common failure in standard pumps is the shaft seal. Magnetic drive pumps eliminate that issue by using a magnetic coupling between the driver (motor) and internal pump parts – this also reduces maintenance. The liquid in the pump is isolated on one side of the magnet, eliminating gasses or liquid leakage into the surrounding atmosphere, which is a huge safety advance over other pump technologies. The driving force to rotate the pump is via a strong magnetic field.

Experts in the industry divide pumps into two main categories:

  • Sealed pumps
  • Seal-less pumps

The first group has a mechanical seal that prevents any leakages. The magnetic drive pumps are an example of seal-less pumps that can perfectly operate without a seal. These magnetic drive pumps are ideal for applications where any sorts of leaks are intolerable. The magnetic drive pumps, also called the coupled magnetic pumps, are different from most traditional pumps, because their motor is connected magnetically instead of an electrical shaft. In addition, the pump has a small magnet that removes any shaft requirements in the pump, offering excellent flow.

That said, these magnetic drive pumps are not as versatile as other pumps and they also have a power generation limitation, impacting flow rates and efficiency. Let us take a look at these pumps in more detail.

Understanding Magnetic Drive Pumps

 Magnetic drive pumps work ideally when minor leakages can cause big problems. These can include aggressive liquids such as acids, corrosives, alkalis, etc. Most applications involve hard sealing liquids or pure-form liquids, which can start dripping as the seal loses its strength over time. Replacing the pump seals is expensive, which makes the magnetic drive pumps a better alternative for industrial applications.

Magnetic Drive Pumps Brands

DApplications of the Magnetic Drive Pumps

The magnetic pumps are best suited for industrial applications, including corrosive or abrasive liquids. Following are some typical applications of magnetic drive pumps.

  • Chemicals
  • Cryogenics
  • Crystallizing fluids
  • Dosing Food and beverage
  • Hazardous and corrosive liquids
  • Oil, fats
  • Lubricants, cooling liquids
  • Photo Processing
  • Pressure boosting
  • Surface Conditioning
  • Tank cleaning
  • Tank to tank transfer
  • Water Treatment
  • Drawbacks of Magnetic Drive Pumps

The magnetic drive pumps also have some drawbacks, which can include the following:

  • Limited handling abilities
  • Torque and power limitation
  • High-temperature fluid handling issues
  • No dry running options

Bottom Line

Magnetic drive pumps are an ideal option to avoid unnecessary leakage or liquid damage. These pumps have no contact with their components; thus, they do not require seals to keep the liquids in place. Using magnetic drive pumps for your industrial applications can help you get efficient liquid transfer irrespective of the liquid type.