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Dolphin LX 0260 - 0430 B

Dolphin LX pumps are robust and proven liquid ring vacuum pumps from Busch in a compact block design. Their proven operating principle enables them to be used in all sectors of industry. This series encompasses the decades of experience in construction and use of liquid ring vacuum pumps. This means the Dolphin LX series offers extremely efficient and modern vacuum generation for the low vacuum range up to 33 hPa (mbar) of ultimate pressure.

Dolphin LX liquid ring vacuum pumps can be operated in simple circulating systems, in open or closed liquid cycles. Thanks to the precise grading between the sizes, the wide range of accessories and the versions of different materials, Dolphin LX pumps are perfectly suited to many industrial processes.

Even critical applications, such as the discharge of humid gases or vapours, can easily be carried out. Dolphin LX liquid ring vacuum pumps are also available in different ATEX versions.

A directly flange-mounted motor ensures an exceptionally compact construction, enabling Dolphin LX liquid ring vacuum pumps to be very well suited for integration into existing systems or machines.

Dolphin LX – Robust and compact. Ideal for difficult applications.

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Technical specifications
Dolphin LX pumps are one-stage liquid ring vacuum pumps. Normally water is being used as the operating fluid. An operation with other fluids is also possible, if required by the process conditions. An eccentrically mounted impeller wheel rotates within a housing. This housing is filled with water to the extent that the vanes of the impeller are immersed in the water. The rotary motion of the impeller wheel and the consequent centrifugal force cause the liquid in the housing to form the so-called liquid ring. The gas is conveyed in the spaces between the individual vanes and the liquid ring. Thanks to the eccentric arrangement of the impeller wheel, the volumes of these spaces change with the result that gas is sucked in, compressed and discharged again.

Accessories/technical options

  • Liquid separator
  • Cavitation protection
  • Heat exchanger
  • Gas ejector
  • Non-return valves
  • Drain valves
  • Vacuum relief valves

Dolphin LX 0260 - 0430 B
Dolphin LX 0260 - 0430 B
Pumping speed

Dry air at 20 °C. Tolerance: - 10%, in accordance with HEI and Pneurop 6612

60 Hz
Pumping speed
Technical data Dolphin LX 0260 B Dolphin LX 0330 B Dolphin LX 0430 B
Nominal pumping speed ACFM 60 Hz 155 191 268
Ultimate pressure Torr 60 Hz 25 25 25
Nominal motor rating kW (HP) 60 Hz 7.5 (10) 11 (15) 15 (20)
Nominal motor speed RPM 60 Hz 1800 1800 1800
Noise level (ISO 2151) dB(A) 72 72 72
Weight approx. Lbs. 60 Hz 256 291 437
Dimensions (L x W x H) inches 26 9/16 x 14 3/8 x 14 15/16 27 1/2 x 14 3/8 x 14 15/16 32 1/16 x 16 ¾ x 20 1/16
Gas inlet / outlet (ANSI) 60 Hz 2" / 2" 2" / 2" 2 ½" / 2 ½"


Dolphin LX 0260 - 0430 B

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