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Liquid-Ring Vacuum Pump

A Liquid-Ring Vacuum Pump liquid band vacuum pump is simple to operate and can be used in several applications across various industries. A liquid ring pump works together with a sealant required in its operation. This liquid can be water, essential oil or any various other solvent which can be rotated by an impeller within the casing of the pump.

As the shaft turns, a liquid band is created by the centrifugal force generated by the rotating impeller. This pressure holds the liquid band against the inner wall structure of the pumping chamber. Because the impeller is located eccentric to the pumping chamber, the depth of access of the blades in to the liquid ring reduces and improves as the impeller rotates. This creates increasing cellular quantity on the inlet port side, creating vacuum.

On the discharge port side, the impeller cell volume decreases as the blades move further in to the liquid band. This increases the pressure until discharge occurs through the discharge port.

A continuing flow of fresh sealing liquid comes to the pump via the sealing-liquid inlet.

In the case of the two-stage liquid band pump, the discharge from the initial stage will not discharge to atmosphere. Instead, the initial stage discharges through the manifold leading to the second stage in addition to through a discharge port located in the intermediate plate between the first- and second-stage impellers.

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The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed replacement parts contained herein are not sponsored, approved, or manufactured by the OEM.