Abstract: An apparatus and method for filtering compressed air has an inlet to admit a flow of compressed air, a filter where the compressed air is cooled and water vapor is coalesced therefrom, an area downstream of the filter where the compressed air is passively warmed when the temperature of the surroundings is higher than the compressed air passing therethrough, and an outlet for discharging the flow of compressed air. The compressed air is passively warmed in the area downstream of the filter in order to increase its moisture retaining capacity. This is done to inhibit or reduce condensation of water from the compressed air which would otherwise cause corrosion in airlines, valves, and pneumatically operated devices through which the compressed air travels.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby, and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby, and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid.

Abstract: A modular filter assembly for filtering compressed air includes a cartridge housing and a self-contained filter cartridge positionable in the housing. A manifold cap is attachable to the housing to conduct a compressed air stream between an air line and the filter cartridge in the housing. The filter cartridge includes a multistage filter and a quiet zone between filter elements therein.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby, and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid.

Abstract: An in-line air purifier for removing water, oil and carbon monoxide from a compressed air stream comprises a two-stage assembly in which the first stage includes replaceable cartridges for promoting coalescence of water and oil into droplets and removing such droplets from the air stream. The dried air is then routed to a second stage where it is passed through a replaceable cartridge containing a bed of activated charcoal for removal of odor-causing matter, and then through a further replaceable cartridge containing a bed of catalytic pellets which function at room temperature to remove carbon monoxide. The resulting purified air is routed through a manually adjustable pressure regulator to a purifier outlet.

Abstract: An inlet valve and filter arrangement for pneumatic equipment in which a disposable filter and liquid evaporator cartridge is removably received within a cylindrical bore at the equipment inlet. A check valve is constructed normally to prevent passage of air therethrough to the pneumatic equipment, and includes a valve element for engaging the cartridge and thereby opening the valve when the cartridge has been properly inserted into the equipment housing. Thus, passage of air to the equipment for operating the same is permitted only when a filter and evaporator cartridge has been properly inserted therewithin.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid. This drain features a continuously open annular orifice for continuous weep-drainage of liquid under pressure. The orifice surrounds a wire having an angulated head disposed within the sump which may be rotated by an operator so as to remove dirt and debris from surrounding and clogging the annular weep orifice.

Abstract: An in-line trap for removing water and/or oil vapor from a compressed airline which includes a manifold having spaced coaxial inlet and outlet openings and a hollow base suspended from the manifold. A first cartridge extends between the manifold inlet and the enclosed volume within the hollow base, and includes a wire fiber pad adapted to coalesce water and/or oil vapor in air passing therethrough into droplets which are then entrained by the air and carried into the base volume. Within the base, a plate having parallel louvers or vanes upwardly struck therefrom in a direction opposed to air travel is supported with respect to the base bottom wall by a honeycomb spacer which forms a dead air space beneath the louver plate. The louvers function to trap vapor droplets which fall by gravity from the air entering the base volume.

Abstract: An airline lubricator in which a diaphragm is disposed in a closed annular chamber surrounding an axial air passage to divide the chamber into an air pressure chamber and a lubricant reservoir. The air pressure chamber is coupled by an angulated pressure tube to the primary air passage adjacent the lubricator inlet. A metering tube and adjustable screw arrangement at the output of the reservoir control the amount of lubricant fed to the primary air passage as a function pressure drop across the primary air path. A ball-type check valve including an adjustable valve seat is disposed across the primary air path in opposition to the metering tube for preventing passage of lubricant in the absence of primary air flow.

Abstract: A pneumatic liquid evaporator and filter comprising a metallic case or housing adapted for connection in a compressed air line and a disposable cartridge assembly removably disposed within the case. The cartridge assembly includes a cylindrical shell having an apertured end wall and a separately formed end cap dimensioned to prevent reverse insertion of the cartridge assembly into the case. A plug of wire and fabric knitted mesh construction is disposed within the shell for performing the vaporization and filtration functions. The end cap includes an apertured bullet-shaped projection which holds the plug against the shell end wall and urges surrounding plug material radially against the shell side wall. An open cavity is thus formed around the projection between the plug and end cap.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid. This drain features a continuously open annular orifice for continuous weep-drainage of liquid under pressure. The orifice surrounds a wire having an angulated head disposed within the sump which may be rotated by an operator so as to remove dirt and debris from surrounding and clogging the annular weep orifice.