Hi-vac
LIQUID RING VACUUM PUMPS

LIQUID RING VACUUM PUMPS are constantly becoming more important in modern plant production processes.
Their design and principles of operation offers many advantages over other types of rotary gas pumps. Liquid
Ring Vacuum Pumps can be used on a very large scale for widely divergent applications.
 

 Hi-Vac - LIQUID RING VACUUM PUMPS
Design Features

Liquid Ring Vacuum Pumps offer the following advantages:

1. High Vacuum. Up to 25mm Hg absolute, and higher (with other service liquid).

2. Long Life and Low Maintenance Cost. The impellers and shaft are the only moving parts. The impellers have no contact with the casing. There are no sliding vanes or valves.

3. Vibration-free and Noiseless Operation. Rugged construction and absence reciprocating parts ensure vibration-free and noiseless operation.

4. Non-pulsation Gas Flow.

5. No Internal Lubrication.

6. Liquid and Vapour Handling. Liquid Ring Vacuum Pumps are capable of handling large quantities of vapour. Small amounts of liquid drawn in from the system will pass through the pump without causing damage.

7. Low Starting Torque.

8. Different Service liquids may be used.

9. Materials of Construction. Pumps can be constructed from a wide range of materials to suit corrosive conditions.

10. Delivery of Absolutely Oil-free Air. When unit is used as a compressor.

 

Maximum Vacuum

Maximum vacuum and capacity obtainable by Liquid Ring Vacuum Pumps depends directly on the vapour pressure or the service liquid.. Higher vacuum and capacities than indicated in the capacity tables may be achieved by using the following methods.

  1. Using a special oil as the service liquid instead of water. The low vapour pressure of the oil allows maximum vacuums down to 12mm Hg absolute. In addition the capacity in the higher vacuum range will increase.
  2. By placing one or more gas ejectors in the series with the pump.
  3. By operating a Liquid Ring Vacuum Pump in series with a mechanical booster , ultimate power vacuums down to 1mm Hg absolute and capacities up to 8000 m3/h are obtainable with this combination.

     

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