SIHI Series

SIHI liquid ring vacuum pumps are displacement pumps of uncomplicted and robust construction with the following particular features:

　non-polluting due to nearly isothermal compression
　 oil-free, as no lubrication in the working chamber
　 handling of nearly all gases and vapours
　 small quantities of entrained liquid can be handled
　 easy maintenance and reliable operation
　 low noise and nearlt free from vibration
　 wide choice of material, therefore applicable nearly everywhere
　 shaft not in contact with the medium
　 protection against cavitation as standard
　 incorporated dirt drain
　 incorporated central drain
　 no merallic contact of the rotating parts

The SIHI liquid ring vacuum pumps LEM/LEL are single-stage ones.

Handling and exhausting of dry and humid gass; entrained liquid can be handled during normal duty. The pumps are applied in all fields where a pressure of 33 to 900 mbar must be created by robust vacuum pumps.

During operation the pump must continuoisly be supplied with service liquid, normally water, in order to eliminate the heat resulting from the gas compression and to replenish the liquid ring, because part of the liquid is leaving the pump together with the pas. This liquid can be separated from the gas in a liquid separator (see catalogue part A). It is possible to reuse the service liquid. The pumps are equipped with a device by which the contaminated service liquid can continuously be drained during operation (dirt drain), If necessary.

The direction of rotation is clockwise, when looking from the drive on the pump.

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