Abstract: An in-line air purifier (110) for removing contaminants from a compressed air line includes an enclosure (112) having a carrying handle (124), a side wall (116) hinged (118) to a base (114), clasps (120, 122) for releasably closing the side wall (116) onto the base (114), and air inlet (126) and outlet (154, 156) couplers carried on the base (114) for coupling the purifier (110) in a compressed air line. A two stage assembly including replaceable cartridges (40, 42, 90) for removing oil and water, a bed (60) of activated charcoal, and a catalytic bed (76) for carbon monoxide is provided within the base (114) and connected between the inlet (126) and outlet (154, 156) couplers for removing contaminants in compressed air passing therethrough. An air monitor (162) is also provided within the base (114) and connected (157, 158, 160) to the outlet coupler (154, 156) for continuously sampling air passing through the outlet coupler (154, 156).

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.