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Dolphin LG 1910 / 2680 A

The Dolphin LG 1910 / 2680 A belongs to the Busch product family of proven Dolphin liquid ring vacuum pumps. You will find more information on advantages, technology, accessories and spare parts, applications as well as a complete product overview on our Dolphin LG series type page

Series Type Page Dolphin LG / LR
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Contact us directly (Busch United Kingdom):
Get in contact or +44 (0)1952 67 74 32

Dolphin LG – robust and high capacity. Ideal for demanding applications, including saturated vapour loads.

Dolphin LG – robust and high capacity. Ideal for demanding applications, including saturated vapour loads.


Technical Specifications

Dolphin LG 1910 / 2680 A

Dolphin LG is a series of single-stage liquid ring vacuum pumps. An eccentrically mounted impeller rotates in a housing partially filled with operating fluid. The impeller blades dip into the fluid, and the centrifugal force exerted by their rotation forms a so-called liquid ring within the housing.


The pumped medium is transported in the spaces between the blades and the liquid ring. The eccentric rotation of the impeller alters the volume of these spaces, causing gas to be drawn in, compressed and expelled.

Dimensional Drawing Dolphin LG 1910 / 2680 A
Dolphin LG 1910 / 2680 A

Pumping speed

Dry air at 20 °C. Tolerance: - 5%, in accordance with HEI and Pneurop 6612

50 Hz 60 Hz
Pumping speed
Technical data Dolphin LG 1910 A Dolphin LG 2680 A
Nominal pumping speed m³/h 11550 – 19100 16160 – 26800
Ultimate pressure hPa (mbar) 160 160
Nominal motor rating kW 220 / 280 / 315 / 355 / 450 / 500 355 / 355 / 400 / 500 / 560 / 650
Nominal motor speed min-1 236 / 266 / 298 / 330 / 372 / 398 197 / 210 / 236 / 266 / 298 / 330
Noise level (ISO 2151) dB(A) < 85 < 85
Weight approx. kg 8930 12750
Dimensions (L x W x H) mm 2732 x 1785 x 2560 3191 x 2065 x 2965
Gas inlet / outlet DN 400 PN 10 / DN 400 PN 10 DN 500 PN 10 / DN 500 PN 10

Accessories and Spare Parts

  • Motorized pumpsets with gearbox
  • Partial or total recirculation systems
  • Cavitation protection
  • Gas ejector
  • Non-return valves
  • Vacuum relief valves


Want to know more?
Contact us directly (Busch United Kingdom):
+44 (0)1952 67 74 32 Get in contact

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