Unit 4, 24 Minerva Avenue, Lea Glen, Roodepoort.  P.O. Box 243 Maraisburg 1700 South Africa
Tel: +27 (011) 472-4480  Fax: +27 (011) 674-2202 Email: sales@bruquip.com
logo150cb.gif (6527 bytes)

TECHNICAL SPECIFICATIONS

LIQUID RING VACUUM PUMPS
 Bru-Vac Single Stage Liquid Ring Vacuum Pumps offer the following advantages:-

  • High and Low Vacuum

  • Long life and low maintenance cost

  • Vibration-free and noiseless operation

  • Non-pulsating gas flow

  • No internal lubrication

  • Liquid and vapour handling

  • Low starting torque

  • Different service liquids may be used

  • Materials of construction

  • Delivery of absolutely oil-free air

High and Low Vacuum
Up to 25mm Hg absolute, and higher (with other service liquids).  Pumps are designed to operate at low vacuums.

Long life and low maintenance cost
The impeller and shaft are the only moving parts.  The impellers have no contact with the casing.  There are no sliding vanes or valves.

Vibration-free and noiseless operation
Rugged construction and the absense of reciprocating parts ensure vibration-free and noiseless operation.

Non-pulsating gas flow

No internal lubrication

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 also pass through the pump without causing damage.

Low starting torque

Different service liquids may be used

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

Delivery of absolutely oil-free air
When unit is used as a compressor.

THE INFLUENCE OF TEMPERATURE ON PUMPING SPEED

The temperature of sealing water has a marked influence on the pumping speed of the pump.


VACUUM CLEANING UNIT

 

If the temperature is higher than 15 deg centigrade then the pumping speed of the pump is reduced, conversly this increases when the temperature is below 15 deg centigrade

Therefore, it is standard practice for capacity tables and curves to be based on water as the sealant at a temperature of 15 deg centigrade (sea level). 

The following graph shows the percentage increase or decrease of pumping speeds related to the water temperature.