Abstract: A wall-penetrating sleeve of air conditioner comprises external pipe and internal pipe. The cross section of the external pipe is “sports ground” shape, and an inner circular wall of the external pipe is tangential to an outer circular wall of the internal pipe. An end of the internal pipe is connected to an air outlet port of the air conditioner, and an end of the external pipe is connected to an air inlet port. This invention prevents an air outlet pipe of a mobile air conditioner from sliding off the wall body.

Abstract: A wireline coupler, for use in oil wells and gas wells to connect a perforating gun to the wireline from which the perforating gun is suspended, is designed to eliminate jamming of the wireline between the casing and the perforating gun when the perforating gun is propelled upward by the gases from the explosion of the perforating gun or by the natural gas, oil, or other fluids released through the new perforations.

Abstract: The invention relates to a connection unit having a multi-channel heat exchanger with high-pressure channels and low-pressure channels and a connection element with a high-pressure reservoir and a low-pressure reservoir, both with a connection for connection. The axial end of the multi-channel heat exchanger is limited by a termination element that has axial passage holes for the high-pressure flow to the high-pressure reservoir. At the axial end of the multi-channel heat exchanger, in the region of the low-pressure reservoir, longitudinal slots are formed through which the low-pressure flow flows from the low-pressure channel to the low-pressure reservoir.

Abstract: A connection between an uncooled pipe and a cooled double-wall pipe with between the walls a hollow space run through by cooling fluid let into the hollow space and taken from the hollow space through side passages connected to cooling fluid inlet and outlet ducts and including a connection zone with longitudinal cross section generally in fork form to have single tubular end connected to the uncooled pipe and an opposite double-wall tubular end to which are connected the corresponding walls of the cooled double-wall pipe so that the fork bottom constitutes a terminal closing of the hollow space and a side passage is made opposite the connection and a portion thereof nearest the uncooled pipe is almost at the height of the fork bottom. A double-pipe heat exchanger includes such a connection.

Abstract: A jacketed pipe flange (10) for connection to an end of an inner pipe (12) and to an end of a jacketed outer pipe (14) surrounding the inner pipe includes a central throughport (16) for mating with the inner pipe. The first annular sealing surface (18) surrounds a central throughport for sealing fluid within the inner pipe, a second annular sealing surface (20) surrounds the first sealing surface, and a third annular sealing surface (22) surrounds the second annular sealing surface for sealing fluid in the jacketed outer pipe from the exterior of the flange. An annular gap (24) separates the first and second sealing surfaces, and a test port (26) fluidly connects the annular gap with an exterior port in the flange. A plurality of axially extending throughports (34) in the flange between the second and third sealing surfaces pass fluid through the jacketed outer pipe and the flange to downstream components.

Abstract: A bulkhead assembly for a pipe-in-pipe system includes coxially inner and outer components which are screwed together along a first threaded portion and a locking device which includes a locking element screwed onto a threaded portion on one of the components having threads running opposite to the threads on the first threaded portion. One of the components further includes a radially extending abutment shoulder at an end of the first threaded portion away from the second threaded portion which abuts against the other component.

Abstract: A coupler for making a detachable bayonet connection between two sections of a flow path. The coupler includes male and female bayonet hub members that detachably connect the flow path sections. In one aspect of the invention, the coupler includes an internal vapor shielding flow path defined within the coupler by the interconnection of the hub members that operates to intercept and remove heat entering the coupler from the external environment. In this regard, the internal vapor shielding flow path may include at least one valve to vent at least a portion of the vapor shielding material external to the coupler from the vapor shielding flow path.

Abstract: A joint for joining a double pipe, which is provided with an outer pipe for transfer of a first fluid, and an inner pipe for transfer of a second fluid. The joint is provided with a flange including a first through bore and a second through bore, a branch portion and a connection pipe having a first end and a second end, the first end being brazed with the inner pipe of the double pipe and the second connection portion being inserted into the second through bore and defining a second portion for connection of the second circuit pipe, whereby the connection pipe transfers second fluid between the second circuit pipe and the outer pipe of the double pipe. The branch portion is provided with a first connection portion for connection of the first circuit pipe, the first connection portion being inserted into the first through bore.

Abstract: The present invention relates to a fluid line member for a modular fluid line system for passing therethrough a crystallizing, heat-sensitive working fluid, such as a synthetic polymer, a cellulose derivative or a solution consisting of cellulose, water and amine oxide. Such working fluids have a temperature-dependent viscosity and are subject to spontaneous decomposition phenomena under strong exothermic reaction. A temperature control of the working fluid is to be made possible by the fluid line member. This is achieved in that the fluid line member has a circular cross-section with a temperature control device instead of the core flow. According to the invention the temperature of the working fluid can thereby be controlled from the inside.

Abstract: A coupling assembly for fuel transfer includes a first inner conduit attached to a first ferrule adapter and a second inner conduit attached to a second ferrule adapter. An inner conduit coupling engages the first inner conduit sealing mechanism and the second inner conduit sealing mechanism, thereby connecting the first inner conduit to the second inner conduit. A first outer conduit surrounds the first inner conduit. The first outer conduit is attached to the first ferrule adapter and the second outer conduit is attached to the second ferrule adapter. An outer conduit coupling engages the first and second outer conduit sealing mechanism thereby connecting the first outer conduit to the second outer conduit.

Abstract: A pre-formed insulation module is disclosed having a part cylinder body. The body includes an unstriated insulation layer formed of a rigid insulating material substantially uniform in composition and density over its cross section. The insulation layer has an inner surface adjacent to a surface of a component to be insulated, and an outer surface generally concentric to the inner surface. A substantially non-fibrous resilient cladding layer shaped to the body is directly adhered to the insulation layer at the outer surface. Connection means are disposed along the length of the body for connecting with a further insulation module, wherein the insulation and cladding layers of each module are brought into relative contact along the contacting surfaces of the modules to insulate a portion of the component.

Abstract: A hose-in-hose coupler having a primary or inner hose assembly and a surrounding secondary or outer hose assembly. The secondary hose assembly is connected by opposing retractable sleeves which when disconnected may by retracted or separated to expose the primary hose assembly.

Abstract: A slurpie hose connection, for attachment between the coaxial hose and the back end of a fuel dispensing nozzle, including two parts, a connector part that fits within the back end of the nozzle, a hose part that secures with the leading edge of the hose, such that when these two parts are brought together, and pushed into sealed engagement, a nut is fastened within the back end of the nozzle, to tightly and snuggly secure the hose connection together, available for prompt usage. A slurpie tube may fasten to tube fittings and extend forwardly in the nozzle, as known, and extend to the bottom of the coaxial hose, to act as a slurpie to remove any accumulated or condensed fuel, from this location, and to prevent its blockage of the return of vapors to the dispenser and for underground storage.

Abstract: A shrouded fluid-conducting apparatus is provided that includes at least one outer conduit and at least one inner conduit disposed within the outer conduit. Preferably, the shrouded fluid-conducting apparatus further includes at least one shrouded end fitting disposed at an end of the shrouded fluid-conducting apparatus and at least one support member engaged with the inner and outer conduits. The shrouded end fitting allows the shrouded fluid-conducting apparatus to be engaged with an additional shrouded fluid-conducting apparatus. The support member allows for the transfer of loads from the inner and/or outer conduits to one or more components external to the shrouded fluid-conducting apparatus. Accordingly, the shrouded-fluid conducting apparatus may be used to transport fuel through an aircraft “ignition zone” in an FAA-compliant manner.

Abstract: A bulkhead assembly for a pipe-in-pipe system is disclosed, the assembly comprising an outer piece (26) and an inner piece (20) which can be screwed together along a first threaded portion (32), and further comprising a locking device (38), characterised in that the locking device (38) comprises a locking element screwed on a second threaded portion (34) having screw threads in a direction opposite to that of the first threaded portion.

Abstract: A coupling assembly for fuel transfer includes a first inner conduit attached to a first ferrule adapter. The first ferrule adapter includes a first inner conduit sealing mechanism, and a second inner conduit attached to a second ferrule adapter. The second ferrule adapter includes a second inner conduit sealing mechanism. An inner conduit coupling engages the first inner conduit sealing mechanism and the second inner conduit sealing mechanism, thereby connecting the first inner conduit to the second inner conduit. A first outer conduit surrounds the first inner conduit. The first outer conduit is attached to the first ferrule adapter. The first ferrule adapter includes a first outer conduit sealing mechanism, and a second outer conduit surrounding the second inner conduit. The second outer conduit is attached to the second ferrule adapter. The second ferrule adapter includes a second outer conduit sealing mechanism.

Abstract: A device for arresting the propagation of a buckle appearing on an outer tube of a double-walled rigid pipe intended to transport hydrocarbons and consisting of two coaxial tubes. The double-walled pipe is of the reelable type and intended for very great depths and consists of a thick and rigid annular transverse partition fastened to the inner tube and to the outer tube. The partition is joined to the outer tube and to the inner tube by way of an outer and inner sleeve having the same diameter as the outer and inner tubes and fastened to the latter.

Abstract: The invention relates to an air-conditioning duct system comprising ducts (1) which comprise a first inner casing (3) and a first outer casing (4) and a first insulator (5) between them, and connecting pieces (2) joining the ducts (1), the connecting pieces comprising a second inner casing (6) and a second outer casing (7) and a second insulator (8) between them. The first insulator (5) in the ducts (1) is an insulating material, and the second insulator (8) in the connecting piece (2) is insulating air.

Abstract: A shrouded fluid-conducting apparatus is provided that includes at least one outer conduit and at least one inner conduit disposed within the outer conduit. Preferably, the shrouded fluid-conducting apparatus further includes at least one shrouded end fitting disposed at an end of the shrouded fluid-conducting apparatus and at least one support member engaged with the inner and outer conduits. The shrouded end fitting allows the shrouded fluid-conducting apparatus to be engaged with an additional shrouded fluid-conducting apparatus. The support member allows for the transfer of loads from the inner and/or outer conduits to one or more components external to the shrouded fluid-conducting apparatus. Accordingly, the shrouded-fluid conducting apparatus may be used to transport fuel through an aircraft “ignition zone” in an FAA-compliant manner.

Abstract: A Hose-In-Hose coupler having a primary or inner hose assembly and a surrounding secondary or outer hose assembly. The secondary hose assembly is connected by slideable sleeves which when disconnected may by extended or separated to expose the primary hose assembly.

Abstract: In the flow path to atmosphere venting hot exhaust gases of a clothes dryer, a fluid-tight seal between a flow-diverting elbow telescoped about a clothes dryer exiting conduit consisting of a rubber sleeve in increasing thicknesses in width in the direction of flow effective in providing an establish sealing contact into the sleeve at a location of its thickness which obviates leakage of gas through the telescoping connection.

Abstract: An inlet/outlet, rotomolded, flexible containment fitting for polyolefin double wall vessels attachable externally to a vessel's outer, sidewall. The molded flexible containment fitting having a corrugated wall portion and circular flanges at each end, one of which is attached to the outside of the containment vessel with the opposite flange having a pipe member extending internally through the fitting a pipe flange attached externally to the inner vessel wall thereby providing compensation for deflection, alignment, expansion and contraction of the inner vessel relative to the external containment vessel while still maintaining a secure fluid conduit through both the inner and outer vessel walls.

Abstract: A venting system for a direct vent fireplace or other direct vent appliance to direct combustion gases to an exterior area. The direct venting vent pipe facilitates unrestricted lengths of pipe installations. The vent pipe has a double wall construction forming an interior axial passageway and a coaxial outer passageway. The double walls are spaced apart by an insert to maintain coaxial spacing. Sections of the vent pipe are lockingly connected to prevent separation and ensure sealing connection between the pipe sections. Elastic seal members are utilized between the matingly connected sections and a mechanical lock assembly prevents separation.

Abstract: A method and apparatus for preventing leakage from a fitting coupling a first and second fluid supply line to an environment surrounding the fitting is generally provided. In one embodiment, a containment apparatus includes a body having a first, second and third aperture formed therethrough. The body defines interior volume that is adapted to substantially enclose the fitting. The interior volume is adapted to be maintained at a pressure less than the surrounding environment to prevent fluid that may leak from the fitting from being released into the surrounding environment. In another aspect of the invention, a method for preventing fluid leakage from a fitting coupling a first and second conduit from entering an environment surrounding the fitting includes enclosing the fitting in a volume defined between a first shell and a second shell, evacuating the volume, and drawing air into the volume from between the shells.

Abstract: A fitting assembly for joining a double containment pipe (DCP), including primary and secondary pipes, to a double containment fitting, including primary and secondary fittings, wherein the secondary fitting has a larger diameter than the secondary pipe. A sealing reducer has a larger diameter end for fitting over the secondary fitting and a smaller diameter end for fitting over the secondary pipe. The sealing reducer is fit over the secondary pipe, the primaries of the DCP and double containment fitting are joined, and then the sealing reducer is positioned over the primary joint and its smaller and larger diameter ends sealed, either by adhesive or a combination of interlocking threaded fitting components and O-rings, to the ends of the secondary pipe and secondary fitting, respectively.

Abstract: A pipe-in assembly comprising an inner pipe unit (7) fixedly mounted within an outer pipe unit (6), each end of the inner pipe unit having a coupling means (3,4) for engagement with a complementary coupling means on an adjacent pipe-in-pipe assembly and arranged such that abutment of in end of the outer pipe unit with an end of the outer pipe unit of aid adjacent pipe-in-pipe assembly brings the inner pipe coupling means of the adjacent assemblies into sealed engagement.

Abstract: A double containment pipe system includes a carrier pipe section having a plurality of radially spaced members fixably connected to and longitudinally extending along an outer surface thereof, a containment pipe section having an inner surface of a diameter to contain said carrier pipe and readily permit movement therein, wherein an annulus is formed between the carrier pipe section and containment pipe section. Further, a plurality of carrier pipe sections as defined and are fixably interconnected and which are operably disposed within a plurality of the containment pipe sections which are removably interconnected. The containment pipe sections are removably interconnected by a quick connect coupling having a clamp configured to sealably enclose and connect adjacent ends of the connecting containment pipes.

Abstract: The present invention relates to a pipe connection configuration which is particularly used for furnace exhaust pipe connection or the like. A sheet metal pipe with an open end thereof is mounted to a sheet metal T-shaped three-way pipe joint. The pipe joint has a first pipe section and a second pipe section extending perpendicularly from the first pipe section. The pipe joint includes a pair of diametrically opposed bayonet slots extending from an open end of the second pipe section for receiving and engaging a pair of diametrically opposed pins projecting radially and outwardly from the pipe when the open end of the pipe slides into the open end of the second pipe section, in order to ensure a secure connection between the pipe and the pipe joint. Such a pipe connection configuration provides a self-locking connection of the pipe to the T-shaped three-way pipe joint in a very simple manner which reduces the amount of labour required on site.

Abstract: A transmission has a hydraulic control device (200) to pressurize actuating members arranged on a rotary shaft (280) through a fluid connection between the stationary hydraulic device and the rotary shaft. The fluid connection consists of coaxial tubular elements (220, 240) with a tubular passage channel between the inner and outer tubular elements. The tubular elements have sealed connections (221, 223, 243, 244) with the rotary shaft and the hydraulic device.

Abstract: A pipe coupling assembly for double-wall pipe having an interstice between an inner pipe and an outer pipe, which joins the terminal ends of adjacent sections of the double-wall pipe to a fitting element, as a tee or elbow fitting, as well as to a connector tube bypass assembly. The coupling assembly provides fluid communication between the interstices of the adjacent sections of the double-wall pipe and the connector tube bypass assembly but does not permit fluid from the interstices of the pipes to pass through the pipe fitting.

Abstract: A group or assembly includes a conduit for transporting a working fluid and a connection along the same fluid path. The connection is mounted freely inside the conduit. At each conduit end, a joining piece provides for the connection at the transition between inside and outside parts of the fluid path. The connection passes right through the joining piece without a break. An advantage of this invention is its usefulness for groups used for connecting mobile elements in industrial robots.

Abstract: In the joint 40 for duplex pipes, a clearance between the first outer pipe seal unit 110 and the second outer pipe seal unit 210 is defined larger than a clearance existing between the first inner seal portion 120 and the second inner pipe seal unit 220. Furthermore, the wire diameter of the O-ring 301 which functions as the sealing member for the outer pipe is defined larger than the wire diameter of the O-ring 401 which functions as the sealing member for the inner pipe.

Abstract: A double-walled pipe connection for an aircraft fuel line includes a first outer pipe surrounding a first inner pipe, a second outer pipe surrounding a second inner pipe, a pipe coupling joining the inner pipes together, a securing fixture on the first inner pipe, a sleeve-shaped outer pipe bushing bolted to the securing fixture by bolts oriented parallel to a radial direction, and an outer pipe sleeve that is axially slidable over the second outer pipe and onto the outer pipe bushing. The first outer pipe is plugged into the outer pipe bushing, which is plugged into the outer pipe sleeve, which seals onto the second outer pipe. The inner pipe coupling is covered or exposed by axially moving the outer pipe sleeve, while the outer pipe bushing remains bolted to the first inner pipe, and mechanically secured and electrically grounded to a metal structure.

Abstract: A pipe coupling assembly for double-wall pipe having an interstice between an inner pipe and an outer pipe, which joins the terminal ends of adjacent sections of the double-wall pipe to a fitting element, as a tee or elbow fitting, as well as to a connector tube bypass assembly. The coupling assembly provides fluid communication between the interstices of the adjacent sections of the double-wall pipe and the connector tube bypass assembly but does not permit fluid from the interstices of the pipes to pass through the pipe fitting.

Abstract: A coupling for interconnecting two double-walled pipes, e.g. production filter pipes (10, 12). The coupling may have the shape of a connector (10A, 12A) divided into two parts, each part (10A, 12A) being attachable on the end portion of a double pipe (10, 12), the parts (10A, 12A) of the connector being interconnectable, preferably mutually screwable. Such double pipes (10, 12) have two concentric liquid passages, one through the inner pipe (14) and one through the annulus-like, concentric liquid passage 920) between inner pipe (14) and outer pipe (16). In order not to block the outer concentric liquid passage (20) at the joint place (10A, 12A) so that liquid flowing therewithin must be transferred to said smaller pipe through a valve, longitudinally extending, through-going flowing channels (18) have been formed in the joint area; said channels (18) may be distributed circumferentially, thus allowing continuous flow of liquid past the coupling area (10A, 12A).

Abstract: A connector is provided to connect a medical/dental instrument to a supply hose carrying air, water, and light from a control unit. The connector includes a first portion which is rotatably received in a second portion. The first portion includes a body and a nose extending from the body. The connector includes air and water passages and a light tube passage which are operably connectable to the sources of air, water, and light through a supply hose. The nose has a generally smooth uninterrupted surface. The operating air and water passages exit on the side of the nose, and the light tube passage and chip air passage exit at the end of the nose. The connector first portion can be used by itself to support an instrument which, for example, need only the light, or in association with the second portion.

Abstract: A union for tubes having a first external wall and a second internal wall coaxial with the first to define a chamber around a central duct. The union includes at least two seats for reception each of one end of a tube to be connected. Each seat includes a first surface designed to adhere to an end segment of the first wall of a tube inserted in the seat and a second surface coaxial with the first and designed to adhere to an end segment of the second wall of the tube. Between the first and second surfaces of the union there is a connection surface. The union includes in it first ducts which lead into the connection surfaces to provide connection between the chambers of tubes inserted in the seats and second ducts which lead into spaces circumscribed by the second surfaces to provide connection between the central ducts of the tubes.

Abstract: A double-walled pipe connection for an aircraft fuel line includes a first outer pipe surrounding a first inner pipe, a second outer pipe surrounding a second inner pipe, a pipe coupling joining the inner pipes together, a securing fixture on the first inner pipe, a sleeve-shaped outer pipe bushing bolted to the securing fixture by bolts oriented parallel to a radial direction, and an outer pipe sleeve that is axially slidable over the second outer pipe and onto the outer pipe bushing. The first outer pipe is plugged into the outer pipe bushing, which is plugged into the outer pipe sleeve, which seals onto the second outer pipe. The inner pipe coupling is covered or exposed by axially moving the outer pipe sleeve, while the outer pipe bushing remains bolted to the first inner pipe, and mechanically secured and electrically grounded to a metal structure.

Abstract: A coupling assembly includes a first coupling member, a second coupling member, and a coupling nut disposed over a portion of the second coupling member and threadingly engaging the first coupling member to retain the first and second coupling members together. An insulation blanket encloses the coupling nut, and a retention strip having a first end attached to an inner surface of the insulation blanket and a second end attached to the coupling nut is provided to prevent loosening of the coupling nut.

Abstract: A riser assembly to transmit gas from a buried fluid line to a manifold. Inner (50) and outer (90) casings are received in a first end of an adapter (54). The other end of the adapter (60) is secured to the manifold. A gripping assembly (70) holds the inner casing in the adapter and prevents a pullout while also providing a sealed inner face between the inner casing and the adapter. A mounting assembly is provided to secure the outer casing in the adapter. It, too, prevents pullout of the outer casing and also allows the outer casing to freely rotate relative to the adapter. In selected embodiments the outer casing is formed of a non-corrosive material such as a PVC or polyethelene to address corrosion resistant properties.

Abstract: A coupling for two pipe sections having integral buoyancy cans, wherein the coupling includes two coupling flanges, each having an inner flange portion configured to couple the pipe stems of the pipe sections and an outer flange portion configured to brace or secure the buoyancy cans of the pipe sections against each other and thereby stabilize the pipe sections. In one embodiment, the inner and outer flange portions of each coupling flange are connected by a plurality of connecting plates. Each coupling flange also includes a plurality of reinforcing plates between the inner and outer flange portions. Each of the inner flange portions is configured as a female box flange. In one embodiment, a pin flange is positioned between the inner flange portions in the assembled coupling to form pin-and-box connections with the inner flange portions. The outer flange portions are bolted together to secure the coupling.

Abstract: A secondary tubing containment system (10) is provided for a discharge tube (18) of a chemical metering pump (14) in a chemical addition system (12). One end of the discharge tube (18) is engaged in a fitting (20) on the metering pump (14), and the other end of the discharge tube (18) is engaged in a fitting (22). The containment system (10) includes a pair of coupling nuts (30, 32), a connector in the form of a Tee (34), two cylindrical tubes (36, 38), a pair of unions (40, 42), and a drain tube (44). The inside and outside diameters of the tubes (36, 38) are sized to allow the tube (38) to be slid or telescoped into the tube (36) to allow the length of the containment system (10) to be adjusted. The union (40) is configured to sealingly engage the tube (38) along the length of the tube (38) to accommodate the adjustment.

Abstract: The invention relates to a coupling unit for coupling two tubular membrane elements of the kind used in membrane filter technology, forming extensions of one another. The coupling unit comprises a jacket piece which is provided at both its ends with sealing surfaces intended to engage the facing ends of the membrane elements to be coupled thereto. The sealing surfaces may be formed on the interior peripheral wall of the jacket piece to engage the exterior peripheral wall of the ends of the membrane elements. However, the sealing surfaces may also be formed on the cross-cut end surfaces of the jacket piece, and engage the cross cut end walls of the membrane elements. The interior of the jacket piece may comprise an axially extending conduit portion to communicate with corresponding flow conduits in the membrane elements.

Abstract: A service riser 10 comprises a steel jacket 11 around a polyethylene pipe 12 which terminates in the riser at a transition zone 20. The transition zone 20 comprises a retainer sleeve 30 inserted in the end of the pipe 12 and sealed thereto by an O-ring 38. The retainer sleeve 30 extends out of the pipe 12 and is provided with grooves 46 separated by lands 48 on which an elastomeric sealing band 52 is received. The tube 11 is swaged down forming a swage groove 56 around the retainer sleeve 30 compressing the gasket 52 to a large extent over the lands 48 and a lesser extent over the grooves 46, the ideal compression for the gasket 52 being arranged somewhere between such degrees of compression. By this means the ideal degree of compression at some regions of the gasket 52, forming an annulus around the retainer sleeve 30, is guaranteed, despite tolerances in the dimensions of the tube 11 (especially) as well as the band 52 and sleeve 30.

Abstract: The invention is directed to a double-wall steel pipe joint. Each section of double-wall steel pipe has a steel outer casing and a steel inner carrier pipe. The completed joint comprises a steel joint ring fitted within the annular space at the end of each double-wall steel pipe section. The combination of locking serration and epoxy bonding join and seal the inner steel pipe to the bore of the joint ring, without welding. Welding joins the ends of the sections of outer casing.

Abstract: A catalyst dumping device (10) for unloading a catalyst (50) inside a reactor (1), in which smashed used catalyst is thrown into a dumping pipe (11) formed of a plurality of pipe member (12) provided to the reactor (1) to unload to outside of the reactor (1) by fall by dead weight. Accordingly, the catalyst can be unloaded only by throwing the catalyst into the dumping pipe (11), thereby improving work efficiency. Furthermore, no special apparatus such as a vacuum apparatus is unnecessary, thereby reducing cost for the special apparatus.

Abstract: A quick connect/disconnect coaxial hose assembly comprises male and female half hose assemblies wherein the half hose assemblies respectively comprise a male and female connector, an outer tube member for conducting a first fluid therethrough, an inner tube member for conducting a second fluid therethrough, a joint retainer nut member for securing the male and female connectors together, and a sleeve member mechanically and fluidically connecting axially inner ends of the inner tube members together. Threaded disengagement of the joint retainer nut member releases the male and female connectors from each other, whereby the half hose assemblies may be readily pulled apart in opposite axial directions disengaging the axially inner end of one of the inner tube members from the sleeve member so as to achieve quick disconnection of the hose assembly.

Abstract: A pass-through dual containment fitting that protectively seals a portion of pass-through tubing has a fitting body that incorporates a first end, a second end and a collar, each having a longitudinal bore for receiving the pass-through tubing. The second end having an extending nose portion. A radially compressive sealing device is engagable with the first end of the fitting body. When the radially compressive sealing device is fully engaged with the first end a fluid-tight seal is formed between the device and the fitting body. A dual containment sealing device incorporates containment tubing having a flared end and a flared end fitting. The extending nose portion of the fitting body is inserted into the flared end. The flared end fitting engages the second end of the fitting body to compress the flared end to the extending nose portion to form a fluid-tight seal between the dual containment sealing device and the fitting body.