Can a liquid ring vacuum pump achieve a vacuum level of -0.098?
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Can a liquid ring vacuum pump achieve a vacuum level of -0.098?
We have ones around 0.98, and also some around 0.94; that should be the limit then
The limit is 0.1 MPa; 0.098 MPa is roughly the limit for vacuum pumps
In pump factories, the vacuum level is generally expressed as a negative value, which represents gauge pressure and is easy to understand
The negative gauge pressure measured by instruments is called vacuum level. Vacuum level = atmospheric pressure – absolute pressure. This parameter should be the limit for the liquid ring
It’s extremely difficult; the water temperature, the wear level of the components, and the lubrication conditions all need to be excellent. Generally, a value of 0.94–0.96 is considered quite good
The saturation pressure corresponding to the operating water temperature of the water ring vacuum pump must be taken into consideration
A two-stage air extractor should be installed before the water ring pump
Gauge pressure of 1000 Pa is acceptable