Abstract: A filter for removing contaminants from compressed gas is disclosed. The filter features an inverse flow regime wherein gas entering the filter first flows downwardly and then reverses direction before encountering any filter media. The filter has a connection head with a gas inlet, a gas outlet and oppositely disposed openings separated by a central partition. The openings are sealingly enclosed by elongated tubular housings which releasably attach to the head. The gas inlet communicates with one side of the partition and the outlet communicates with the opposite side. A plurality of individual filter elements are arranged on either side of the partition and filter out aerosol, vapor and particulate contaminants from the compressed gas. The filter elements are releasably mounted to the central partition and can be removed and replaced independently of one another.

Abstract: A moisture removal device for compressed gas lines and the like includes a connection head having a gas inlet and a gas outlet. An elongated housing having an internal cavity is attached to the connection head with the use of a clamp ring. The elongated tube and head are sealed to each other with the aid of O-rings preventing the escape of the compressed gases. Internal of the housing is a cartridge containing desiccant media for the removal of water vapor from a compressed gas. The cartridge is sealed and supported to the connection head with the use of a centrally threaded rod and O-rings located between the cartridge and the connection head. The external body of the desiccant cartridge is impermeable to gas and forces compressed gas from the inlet of the connection head to the bottom of the elongated housing.

Abstract: A moisture removal device for compressed air lines and the like includes a connection head having a gas inlet and a gas outlet. An elongated housing having an internal cavity is threaded to the connection head and sealed thereto with O-rings such that a central distribution tube is coupled to one of the inlet and the outlet and an open end of the housing is coupled to the other. The housing contains desiccant material for removing moisture from the gas, held captive in the housing by a retention screen across the open end. The distribution tube is impermeable between its end coupled to the connection head and one or more openings at the opposite end of the housing. The gas thus flows from the gas inlet through the entire bed of desiccant material and is discharged through the gas outlet in the connection head.

Abstract: An inverse flow depth filter assembly includes an elongated, generally elliptical housing with gas inlet and egress means, and a bottom drain. A filter cartridge is suspended from the housing top so that an annular channel is created between the housing and the cartridge. The cartridge has passages at the top, leading to the egress means and an open bottom. Air enters the housing and is channeled downward through the annular channel until it reaches the cartridge bottom, quiets the turns upwardly through the filter. Heat exchange apparatus cools the down-flowing air and promotes condensation of the water. The heat exchange apparatus can include a plurality of fins fixed to the exterior of the housing to promote heat exchange with the surrounding atmosphere. Heat exchange fins disposed internally at the annular channel promote heat exchange between the flowing air and the housing. The fins increase the contact surface area for better heat exchange with the outside air.

Abstract: An inverse flow depth filter assembly includes an elongated, generally elliptical housing with gas inlet and egress means and a bottom drain. A filter cartridge is suspended from the housing top so that an annular channel is created between the housing and the cartridge. The cartridge has a plugged top and an open bottom. Air enters the housing and is channeled downward through the annular channel until it reaches the cartridge bottom. Air then enters the cartridge bottom to flow in an upward vertical pattern through the filter element. The filtered air then passes through ports in the plug and exits the housing through the gas egress means.