Characteristic:
1.Simple voice, simple structure, high efficient
2.Extreme high vacuum, pumping speed large
3.Use gas ballast valve, can be able to pump condensable gas, such as water vapor 4.Pressure oil circulating system
5.Automatic fuel oil returning check valve

Applications:

It is widely used in the electric vacuum device manufacturing industry, refrigeration industry, medical analysis device industry, solar energy industry, electric light source industry, vacuum furnace industry and scientific research unit.