Proven technology, proven designs –
quality products you can trust.

Dolphin LR 0700 / 1190 A

The Dolphin LR 0700 / 1190 A belong 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 LR series type page.


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

Would you like to know more?
Contact us directly (Busch United States):
+1 757 463 7800 Get in contact

Dolphin LR 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.


Dolphin LR 0700 / 1190 A
Dolphin LR 0700 / 1190 A
Pumping speed

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

Pumping speed

Standard News

Latest News