Sundyne/HMD Kontro Celebrates 70 Years of Sealless Magnetic Drive Pump Technology

With no seals to replace, the pumps eliminate the risk of emissions or leaks that can harm productivity, employees and the environment.

Sundyne, a global leader in the design and manufacture of pumps and compressors for use in oil, gas and petrochemical production, today celebrated the 70th anniversary of the first magnetic drive sealless pump, which was designed and developed in 1947 by its HMD brand.

Sealless magnetic drive pumps are now available for a wide variety of applications, from standard pumps used in the chemical, phar¬maceutical and biochemical sectors, to highly specialized pumps that are engineered for demanding services in the petro¬chemical and oil & gas industries. For situations that involve high temperatures, high viscosity, high pressures and volatile, toxic and aggressive liquids, sealless magnetic drive pumps have become a preferred alternative to traditional sealed pumps.

“In some industries there’s a perception that sealless centrifugal magnetic drive pump technology is new, so we’re leveraging HMD’s 70th anniversary to illustrate how thousands of sealless magnetic drive pumps have been deployed around the globe,” said David Clark, general manager, Sundyne HMD Kontro. “With no seals to replace, the pumps eliminate the risk of emissions or leaks that can harm productivity, employees and the environment – and with streamlined components that can be used across a wide product line, spare parts inventories can be kept at a minimum, which helps to reduce operating budgets.”

The latest sealless magnetic drive pump enhancements have been in the areas of secondary containment, reducing power consumption and eliminating risks of dry running.

Technology called VapourView leverages ultra-sonic signals to detect the presence of gas in a liquid stream. It provides early warnings for incorrect priming, venting, cavitation or entrained process gas, which can result in pump damage or failure.

Other enhancements such as the ZeroLoss containment shells address eddy current heating issues that can hinder rotating magnetically-coupled equipment. By removing this variable, higher efficiency ratings can be achieved by pumps, which can lead to operational cost savings.

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