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Liquid Ring

Vacuum pumps and compressors

Liquid Ring

OPERATING PRINCIPLE

How do liquid ring vacuum pumps and compressors work?

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. Thereby, the gas is drawn in, compressed and expelled.

In single-stage versions, compression is carried out once. In two-stage versions, the pumped medium is compressed again to allow higher vacuum levels to be achieved.

The operating fluid is usually water, but other liquids may be used if required by the process conditions.

Liquid ring vacuum pumps can be operated as a simple continuous flow system, or as a partial or total recirculation system. Operation as a compressor is also possible.

OPERATING PRINCIPLE

Our portfolio of liquid ring vacuum pumps and compressors

  • DOLPHIN LX

    DOLPHIN LX

    The compact solution for challenging environments

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  • DOLPHIN LA/LB

    DOLPHIN LA/LB

    Reliable vacuum for a variety of chemical processes

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  • DOLPHIN LM/LT

    DOLPHIN LM/LT

    Robust principle, modern design

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  • DOLPHIN LG/LR

    DOLPHIN LG/LR

    Our largest liquid ring vacuum pumps

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  • DOLPHIN VL

    DOLPHIN VL

    The complete solution

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  • DOLPHIN LN

    DOLPHIN LN

    The perfect solution for flare gas recovery

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