Screw Vacuum Pump have an inherent disadvantage when it comes to draining and flushing. The exhaust port is small and is not at the lowest point in the Vacuum Pump so liquid will not drain out of the Vacuum Pump. But, the exhaust port of BDRY Vacuum Pump is big and is at the lowest point in the Vacuum Pump so liquid will drain out of the Vacuum Pump smoothly.
2
Gas ballast:
The basic principle of ballast is that Non-condensable gas (N2 or air) is admitted into a pump during the gas compression stages. This increases the percentage of non-condensable gas such that the partial pressure of the vapor being pumped is below its saturated vapor pressure.
3
Gear Oil Coolant Jacket:
The lubricant oil in the gear box is cooled by a cooling water jacket.
No Contamination of Process Stream
Deeper Vacuum
More Flexible Operation
No Effluent
No Pollution
No Waste Disposal Costs
Lower Maintenance Costs
Immediate Solvent Recovery at Pump Exhaust
Liquid Ring
Seal Fluid Supply
Effluent Disposal
Potential Cavitations
High Maintenance & Servicing Cost
Vapor Pressure Limiting Vacuum
Non Recoverable Condensate
Low Capital Cost
Traditional Equipment
Good Liquid/Solid Handling
Rotary Vane Pump
Seal Fluid Supply
Non Aqueous Effluent Disposal
High Maintenance & Servicing Cost
Non Recoverable Condensate
Vanes Prone to Chemical Attack
Intensive Operator Involvement
Lower Capital Cost
Improved Vacuum Levels
No internal lining