Importance

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Abstract

An in-line filter device including a double-walled tube filter assembly, and an upper cap and a lower cap which are held in communication with upper and lower open ends of the filter assembly. The filter assembly has an inner tube and an outer tube which are disposed in radially spaced, and coaxial relation with each other, so as to define an annular space therebetween. One of the inner tube and the annular space is filled with a first pad adapted to coalesce vapor in compressed air passing therethrough, into droplets, while the other of the inner tube and the annular space is filled with a second pad adapted to vaporize residual liquid particles remaining in the compressed air which has passed the first pad. The upper cap has an inlet connected to the upstream side of a compressed air conduit and communicating with the first pad incorporated within the double-walled tube filter assembly. The upper cap further has an outlet connected to the downstream side of the conduit and communicating with the second pad. The lower cap has an enclosed space accommodating a porous trapping structure for trapping the droplets from the first pad, and further has a drain for discharging a mass of the trapped droplets.

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First Claim