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Dolphin LT 0630 / 0750 A

The Dolphin LT 0630/0750 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 LM/LT series type page.

Series Type Page Dolphin LM / LT
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Contact us directly (Busch United States):
Get in contact or +1 757 463 7800

Technical Specifications

Dolphin LT 0630 / 0750 A

The Dolphin LT is a series of two-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. Operation as a compressor is possible up to 30 PSIG. Dolphin LT 0630/0750 A are the two largest vacuum pumps in a series that comes in a total of eight sizes.

Dimensional Drawing Dolphin LT 0630/0750 A
Dolphin LT 0630/0750 A

Pumping speed

Air at 70 ºF. Tolerance: - 10%, in accordance with HEI and Pneurop 6612

60 Hz
Pumping speed
Technical data LT 0630 A LT 0750 A
Max. pumping speed ACFM 60 Hz 340 418
Ultimate pressure (gas-ballast valve open) Torr 25 25
Nominal motor rating HP 60 Hz 30 40
Nominal motor speed RPM 60 Hz 1800 1800
Max. pressure PSIG 30 30
Sound level (ISO 2151) dB(A) 60 Hz 76 76
Approximate weight Lbs. 992 1170
Dimensions (L x W x H) inches 62 11/16 x 21 1/2 x 17 11/16 66 5/8 x 23 x 17 11/16
Gas inlet / Gas outlet DN 65 PN 10 / ANSI 2 1/2" 150 lbs / JIS 65 10K DN 65 PN 10 / ANSI 2 1/2" 150 lbs / JIS 65 10 K

Accessories and Spare Parts

  • Modular pumpsets, configured for partial or total recirculation of the operating fluid
  • Liquid separator
  • Cavitation protection
  • Heat exchanger
  • Gas ejector
  • Wide selection of motors
  • Non-return valves
  • Vacuum relief valves


Dolphin LT 0630 / 0750 A

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

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