Vaccum Pump

[MayankBhatia]

Hi everyone...i have little inquiry iN a vacuum pump with Gas ballast what is actually happening when we open that valve.Like air entered n reduced the compression n stop liquid condensing.But how?what actually going on.Please help me n also help me with this satemnt

"If the temperature in a system remains constant (an isothermal system), vapor at saturation pressure and temperature will begin to condense into its liquid phase as the system pressure is increased. Similarly, a liquid at saturation pressure and temperature will tend to flash into its vapor phase as system pressure is decreased."

if some one can explain in a better way that would be helpful

[stufus]

http://www.google.ie/url?sa=t&rct=j&...55534169,d.ZG4

[RANGER1]

http://www.google.ie/url?sa=t&rct=j&...55534169,d.ZG4

Thanks stufus, its interesting you can know things but not the exact details.

Here is a little more broad info on vac pumps see "knowledge bank"
www.coolvac.com.au