6, has been pumping gas composition to understand.
With free gas can be steam condensate, with or without particles of dust, such as whether or not corrosion. Choice of vacuum pumps, the need to know the gas composition, was pumping gas for the pump selection. If the gas contains steam, particles and corrosive gases should be considered in the pump inlet tube on the road to install auxiliary equipment, such as condenser, collector and so on.
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