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By certification 
Roots vacuum pump
NSR type roots vacuum pump has been developed from the most successful roots blowers & positive displacement blowers. Our pumps are excellent quality and good service for our customers all over the world.
Roots vacuum pump technical data:
The vacuum pressure from V 9.8kpa to V49kpa.
Air flow from 1.22m3/min ~60m3/min
Bore size:40mm~200mm
Our pump is compatible with all types of backing pump
Horizontal or vertical flow
220V~480V,50Hz or 60Hz operation
Compact design and sable performance
Low noise & No oil leakage
Applications:
Vacuum packaging
Paper issue industry
Drying
Metal casting
Solvent Recovery
Food and packing industry
