Price Pump: Basics of Magnetic Drive Pump Technology

01.08.2013

Magnetic drive pumps are a centrifugal pump in which the motor is coupled to the pump by magnetic technology rather than by a mechanical shaft. The pump consists of three main parts: the driving magnet, the driven magnet, and the magnet cup.

Price Pump: Basics of Magnetic Drive Pump Technology

Magnetic drive pump (Image: Price Pump)

The driving magnet is connected to the motor and is radially aligned with the driven magnet, the latter of which is connected to the pump. The magnets are separated by the magnet cup, which acts as a static barrier between the two and seals the pumped fluid from the atmosphere, resulting in a ‘seal-less’ (sans mechanical seal) design. This barrier is also referred to as a hermetic seal. The driving magnet rotates as power is applied to the motor and the driven magnet follows suit, compelled by magnetic attraction.

This pump type has been available for several years. Mag drive pumps have recently become more popular due to recent advancements in magnet technology combined with more stringent application requirements, the incompetence of mechanical seals, and new legislation regarding fugitive emissions.

Magnetic drive pumps provide several benefits:

  • Seal-less design: No mechanical seal is required
  • Zero leakage / 100% emissions free
  • High reliability/ lower maintenance
  • Safer operations pumping hazardous fluids

These advantages are the primary reason why more pump users are turning to mag drive pumps. Their increased reliability and lower total cost of ownership have also contributed to an increased demand for the pumps over more conventional options. Highly reliable and safe to operate, magnetic drive pumps are the best choice for handling hazardous and expensive fluids in a variety of applications.

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Hydraulic Institute Seeks Reviewers for ANSI Canvass Ballots

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The Hydraulic Institute (HI), under the approval of the American National Standards Institute (ANSI), is seeking qualified individuals in North America to participate in the review process for the draft of the following updated standards: ANSI/HI 9.1-9.5 Pumps – General Guidelines, ANSI/HI 9.6.2 Rotodynamic Pumps – Assessment of Applied Nozzle Loads, and ANSI/HI 9.6.8 Rotodynamic Pumps – Guideline for Dynamics of Pumping Machinery.

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