They are designed for pumping the air and gases which are non-aggressive to gray cast iron, structural steel, mineral oil, and explosion-proof in the conditions of the flow part and gear reducer. They are used ONLY with a fore-vacuum pump and are connected with the second stage of rarefaction.
They are used in the following processes:
The DVN pump consists of the pump which is mounted on the foundation frame and connected to it with help of the elastic finger coupling of the electric motor. The cooling of the 2DVN-500 pumps is provided by the air, of the 2DVN-1500 pumps – by the water.
|Speed of action, not less than, l/sec||500||1500|
|Pressure drop, not more than, kPa||1,0||1,0|
|ultimate residual total pressure, Pa||0,5||0,5|
|Capacity of electric motor, kV||7,5||11|
|Cooling water consumption, l/h||–||360|
|Overall dimensions, mm||1340х600х850||1840х580х850|
|Designation of the recommended foreline pump||НВЗ-90||НВЗ-180|