Importance

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Abstract

In-line filter device including a first and a second filter disposed parallel with each other on a trap structure such that the filters communicate with a trap chamber defined in the trap structure, so that water and/or oil vapor contained in compressed air flowing through the first filter are coalesced into droplets, which are captured in the trap chamber, while any remaining liquid particles in the air are vaporized during passage through the second filter. The device has a reduced-pressure sump in the bottom portion of the trap structure, and inlet holes through which the captured liquid flows from the trap chamber into the sump such that an upper open end of the tube is positioned in a flow path of the air between the trap chamber and the second filter, for sucking the atmosphere in the sump toward the second filter. A draining device is provided in the bottom portion of the sump, for discharging the liquid out of the sump.

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First Claim