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New Series of Liquid Ring Vacuum Pumps

By Chemical Engineering |

This new series of pumps, based on proven liquid-ring vacuum technology, has been completely redesigned. Dolphin LM models are single-stage vacuum pumps for the vacuum range from atmospheric pressure to 100 Torr ultimate pressure. Dolphin LT models are available in two-stage versions and cover the vacuum range from atmospheric pressure to 25 Torr. A total of 13 sizes are available so that a precisely coordinated solution can be found for any process. Dolphin LM/LT vacuum pumps have a modular design and integrated flow channels. This makes them extremely compact, according to the manufacturer.  The optional motor pedestal eliminates the need for base frames, since the NEMA Premium efficiency motor is directly flange-mounted. The new seal concept with mechanical shaft seals ensures a long life cycle. The standard material for the impeller is stainless steel. A stainless steel version of the housing is available as an option.

Water or a fluid suitable for the process medium is used as the operating fluid. Ethylene glycol, mineral oils or organic solutions can also be used. Dolphin LM/LT liquid-ring vacuum pumps can be operated in once-through circulation systems, in open, or in closed liquid cycles. Their high vapor and particle tolerance makes them exceptionally well-suited for removal/extraction of wet gases or vapors, according to the manufacturer. They can be used for processing chemicals, pharmaceuticals, foodstuffs, oil and plastics, as well as wood impregnation and drying processes, and many other industrial processes. Dolphin LM/LT vacuum pumps are available in sizes with pumping speeds of 58 to 510 ACFM. Versions for operation in potentially explosive environments are available in different ATEX-compliant versions and temperature classes. — Busch LLC, Virginia Beach, Va. www.buschusa.com

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