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3.2
Gas Ballast
The controllable gas (generally dry air at room temperature) is admitted into
the pump chamber. It is mixed with pumped vapor during the gas
compression process. This increases the percentage of non-condensable gas
such that the partial pressure of the vapor being pumped, is below its
saturated vapor pressure when the exhaust valve opens. The vapor is then
discharged from the pump without liquefaction. The more vapor contained
within the pumped gas means the more air is required (refer FIG.2 Gas
Ballast Valve).
3.3
Accessories
To ensure the stability of the pump it is recommended that genuine spare
parts and accessories provided by the manufacturer be used. Should further
information be required please contact serviceusa@hollandgreenscience.com
Version 1.0
Gas Ballast Valve - Figure 2.
User Manual
Opening Position
12
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