Flow stream filtering method and system

A filter system operating under vacuum conditions, comprising:

• a flow stream input section, connected to a source of flow stream;
• a filter section connected to said flow stream input section;
• and
• a flow stream output section connected with said filter section;
• wherein said flow stream input section receives, at a flow stream inlet port thereof, from said source of flow stream, a flow stream comprising at least one of air, water, airborne droplets, moisture and gases, and directs the flow stream to said filter section, and from said filter section to said flow stream output section, the system delivering a filtered flow stream from said flow stream output section at a flow stream output thereof;
• wherein said filter section comprises filter elements, a number and a size of the filter elements being selected to optimize a flow stream volume within the filter section and a contact surface between the flow stream and surfaces of the filter elements, and to optimize flow of a liquid phase along the surfaces of the filter elements;
• the filter elements capture a liquid phase from the flow stream, and direct the liquid phase from the filter section to the flow stream input section, the flow stream input section directing the liquid phase out of the system at a liquid output thereof;
• the system further comprising a draining section and a reservoir, the draining section being sealed between the filter section and the flow stream input section by the filter elements resting on a bottom plate of the filter section and a bottom plate of the draining section;
• the draining section being connected to the filter section by a first tubing;
• the reservoir being connected to said draining section by a second tubing with a valve between an outlet drain port of the draining section and an inlet port of the reservoir, the reservoir comprising a reservoir outlet port valve, and wherein, when the valve between the outlet drain port of the draining section and the inlet port of the reservoir is closed, the draining section receives a liquid drained from inside of the filter elements;
• and when the reservoir outlet port valve is closed and the valve between the outlet drain port of the draining section and the inlet port of the reservoir is opened, the reservoir receives the liquid from the draining section, independently of liquid from outside surfaces of the filter elements.