Abstract: A packoff for a wellhead includes a body configured to be positioned in an annulus between the wellhead and an inner tubular above a casing hanger supported in the wellhead, the body including a bore and a lower end, the bore and the lower end being configured to be positioned at least partially around the inner tubular. The lower end is configured to be spaced apart from the casing hanger. The packoff also includes a first load shoulder member configured to be removably connected to the lower end of the body and to engage a surface of the casing hanger so as to form a seal therewith.

Abstract: A lens module includes a lens holder and a lens. The lens holder comprises a through-hole. The lens holder comprises an inner wall surrounding to define the through-hole. A first thread is formed on the inner wall. A second thread is formed on an outer sidewall of the lens. The first thread cooperates with the second thread to fix the lens on the lens holder. At least one first slot is defined on the outer sidewall of the lens and around a periphery of the lens, and a seal ring is received in each first slot. At least one second slot is defined on the outer sidewall of the lens along a direction of an optic axis of the lens. Each second slot passes through each first slot to form a receiving space. The disclosure also provides an electronic device having the lens module.

Abstract: A novel hose nozzle has a cup shaped capture nozzle housing with a curved shape similar to the mating O-ring. The cup shaped ends of the nozzle create a 45 degree angle. The novel shape of the ends of the nozzle traps the O-ring at the same radius of the O-ring. Rounding off the end of the nozzle permit the ends to have a radius equivalent to the O-ring. The O-ring is aligned with the nozzle, because there is no longer a round item trying to fit onto a flat surface. This design stabilizes the end of the nozzle, and keeps the nozzle from becoming crooked. The mating surfaces between the nozzle cup and the O-ring are the same. The O-ring mating surface has a complementary shape to the nozzle mating surface and the radius at the end of the nozzle preferably matches the radius of the O-ring.

Abstract: The invention relates to an ATAAC having a header, a plurality of slots defined in the header, a plurality of core tubes coupled to the header, and a plurality of joint assemblies to couple the header with the plurality of core tubes. Each of the plurality of joint assemblies includes an adapter, a sleeve, and a nut. The adapter further includes a first section threadedly engaged with one of the plurality of slots. The adapter further includes a tapered section inserted inside a flared end portion of one of the plurality of core tubes. Furthermore, the adapter includes a second section defined between the tapered section and the first section. The sleeve disposed around the one of the plurality of core tubes, the sleeve is engaged with the flared end portion of the one of the plurality of core tubes. The nut is engaged with the sleeve and the second section of the adapter.

Abstract: A well tool device includes a housing with a through bore having a first end and a second end. A frangible obstruction device is provided inside the longitudinal bore, where fluid flow between the first end and the second end is prevented due to the frangible obstruction device. The frangible obstruction device includes a through opening. The well tool device further includes an actuation device extending fluid-tight at least into the through opening. The actuation device includes an actuation tool connection interface and a disintegration device. The disintegration device is configured to be at least partially moved into the frangible obstruction device and thereby provide disintegration of the frangible obstruction device, hence allowing fluid flow between the first end and the second end of the through bore.

Abstract: A fluidic plug unit for liquid-conducting components, in particular for high-performance liquid chromatography, includes a plug housing that has a plug region with a front plug region and a rear plug region which is adjoined thereto in an axial direction. The plug unit is designed for connection to a bushing unit. In a connected state of the plug unit and bushing unit, an annular space, which is substantially closed on all sides, is formed for a sealing element of the plug unit, the annular space being bounded by an outer wall of the front plug region and an inner wall of the receiving recess of the bushing unit.

Abstract: A hydraulic fluid line coupling system is disclosed. The coupling may include a female fitting, a male fitting, first and second elastomeric seals between the female fitting and male fitting, and a clamp surrounding the female fitting, male fitting, and first and second elastomeric seals.

Abstract: A compressor system is disclosed with a base structure configured to support a compressor. A removable oil reservoir is connectable with the base structure. An oil drain tube is configured to be in fluid communication with portions of the compressor system and the oil reservoir. The oil reservoir is configured to slidingly move relative to the base structure and engage with the oil drain tube in a fluid sealing arrangement.

Abstract: A connecting arrangement for a fitting unit with a fitting housing (13). In the housing there is at least one bore (17, 18) for mounting a medium pipe (24, 36) by means of a threaded fitting 31, 34). The fitting may optionally be chosen as a nut (31) for squeezing a cutting sleeve 30) or as a soldering bushing (34) for mounting the medium pipe by soldering. Irrespectively whether there is a bore (17, 18) in the fitting housing or a bore in the soldering bushing 34), several parts with varying diameters would be provided so that medium pipes with different diameters can be fastened.

Abstract: A capping stack having a first capping stack component and a second capping stack component, and a method for transporting the same are disclosed. The capping stack components are mounted onto standard skids and loaded onto an aircraft. Upon arrival at a location, the skids are mated, and the capping stack components are aligned and coupled. A clamp assembly may be used to create pressure integrity between two capping stack components.

Abstract: The present invention relates to a fluid connection system for a pump or other fluid handling device that includes adapters for connecting fluid lines and fittings of different diameters to a fluid port. The system includes a sliding quick disconnect element with an adapter inserting internally of the quick disconnect element into a bore of the port. The adapter includes a cylindrical body with an outer annular groove that receives an O-ring for sealing against the bore of the port. The adapter body includes a first portion having a first inner diameter and a second portion having a second portion having a second diameter for receiving the fitting from the fluid line. The quick disconnect element receives the adapter internally of the quick disconnect to retain the adapter. The adapters having different diameter internal cavities and may be interchanged for using the same port for fluid lines of different sizes and diameters.

Abstract: A threaded adaptor has a first end and an opposite second end of a generally hollow cylinder. At least one end has threading for connection to a hose or fitting and the ends form the male half of the connection. Centered upon the adaptor, a collar provides at least two faces for gripping of the adaptor by a tool. Within the adaptor, the two ends open into a smooth chamber that allows for uninterrupted fluid flow. To further seal the adaptor, at least one O-ring and at least one gasket are provided as alternate embodiments. In another alternate embodiment, the adaptor has one threaded end, an opposite barbed end with a clamp, and a collar with six faces. These two ends open into a chamber with a stepped diameter. The adaptor provides for flow of fluid with little turbulence.

Abstract: A battery module is provided. The battery module includes a battery cell and a heat exchanger disposed adjacent to the battery cell. The battery module further includes a cooling manifold having a tubular wall, a first fluid port, and a ring shaped member. The tubular wall defines an interior region and having first and second end portions. The first fluid port extends outwardly from an outer surface of the tubular wall and fluidly communicates with the interior region of the tubular wall. The ring shaped member is disposed on an outer surface of the first fluid port a predetermined distance from the outer surface of the tubular wall.

Abstract: A coupling feature for double-walled pipes. A double-walled vent pipe section has an outer wall with corresponding male and female coupling features formed on opposite ends thereof. The inner wall of the double-walled pipe section has a small ridge formed around the circumference of one end. When pipe sections are coupled together, the male and female coupling features on the outer walls engage, and the ridge on the inner wall of one pipe section engages with the bare inner wall of the other pipe section.

Abstract: The invention relates to the simple and safe construction of a high-pressure connection (1) for transferring gaseous and/or liquid media, in particular for the refuelling of vehicles with hydrogen. According to the invention, the high-pressure connection (1) comprises a housing (2) with a media passage (P) and a leaktight piston (3) of which the front end is disposed in a sealing manner with respect to an annular seal. The seal (4) has a seal support (4a) in which is inserted a sealing insert (4b), the sealing support (4a) consisting of a harder plastics and the sealing insert (4b) consisting of a softer plastics.

Abstract: An inflating hose connector includes a plug defining a plug body for insertion into one end of an inflating hose and a head at one end of the plug body, a locknut rotatably capped on the plug head, a connection member defining an outer thread on each of two opposing ends thereof for selectively fastening to the locknut, a Schrader (American) valve connection hole in one end thereof and a Schrader (American) valve connection hole in the other end thereof. Thus, the user can freely select a Schrader (American) valve or a Presta (French) valve, and fasten up the inflating hose connector with the selected Schrader (American) or Presta (French) valve conveniently by means of a screw joint, preventing loosening and facilitating application.

Abstract: A threaded adaptor has a first end and an opposite second end of a generally hollow cylinder. At least one end has threading for connection to a hose or fitting and the ends form the male half of the connection. Centered upon the adaptor, a collar provides at least two faces for gripping of the adaptor by a tool. Within the adaptor, the two ends open into a smooth chamber that allows for uninterrupted fluid flow. To further seal the adaptor, at least one O-ring and at least one gasket are provided as alternate embodiments. In another alternate embodiment, the adaptor has one threaded end, an opposite barbed end with a clamp, and a collar with six faces. These two ends open into a chamber with a stepped diameter. The adaptor provides for flow of fluid with little turbulence.

Abstract: A sealing ring and a method of preventing or stopping a joint leak between a pipe and a pipe fitting to minimize property damage as well as clean up costs occurring from property damage due to joint leaks by securing a sealing ring to the pipe and the pipe fitting to form a secondary joint that inhibits or prevent leakage between the primary joint between the pipe and the pipe fitting.

Abstract: A device for connecting a plastic tube (1) to a connection nipple (2) is described, the connection end (4) of the plastic tube (1), which is provided with a frontal chamfer (8) at least in the area of the internal diameter, being axially fixed between the connection nipple (2) and a clamping sleeve (3) with at least one sealing ring (5) held interposed in the profiled connection nipple (2). In order to provide advantageous connection conditions, it is proposed that connection nipple (2) have at least one radially outwardly protruding stop (14), which is displaceable radially inward by means of the frontal chamfer (8) in the area of the internal diameter of the connection end (4), the stop (14) being situated in front of the sealing ring (5) viewed in the insertion direction.

Abstract: A docking system for docking a liquid stream carrying line to a docking body, includes a line end having a first form that is conically tapered in the direction of flow and a docking interface which is situated on the docking body and has a second form that is conically tapered in the direction of flow. The first conically tapered form and the second conically tapered form are adapted to one another in such a way that, in the docked state, they are mutually set apart in one coupling region by an interspace defined by a sealing ring, concentrically opposing one another. The first conically tapered form is equipped on its periphery with at least one cleaning element, which extends from the first conically tapered form toward the second conically tapered form in order to capture liquid that may accumulate in the interspace.

Abstract: A male coupling for attaching to a female coupling in which rotation of the male coupling with respect to the female coupling is limited. In one embodiment, the male coupling has one or more tabs extending from a flange, the tabs limiting rotation when the male coupling is mated to a female coupling assembly for fluid conductors.

Abstract: The invention relates to a joining arrangement for connecting a pipe to a system, especially a hydraulic clutch disengagement system. The joining arrangement comprises a joining member which can be fixed to a final section of the pipe and is to be connected to an opposite piece that is fastened to the system. The joining member positively embraces at least one radially prominent protrusion of the pipe for fastening purposes.

Abstract: A seal material and a washer are fitted on a piping main body of a first piping, a bead portion is inserted into a bead portion insertion hole and the seal material and the washer are inserted into a seal material insertion hole. In this state, a female screw is threaded onto a male screw until a piping side stopper and a nut side stopper are abutted, and the nut member is joined to a piping side tube portion. In a state where the piping side stopper and the nut side stopper are abutted, the seal material is compressed in an axial direction via the washer by the small diameter tube portion and the seal material pressure-contact surface. The seal material is elastically joined to an outer circumferential surface of the piping main body and an inner circumferential surface of the bead portion insertion hole in a radial direction.

Abstract: A rotary joint and a housing for a rotary joint include an insertion hole for receiving a rotary shaft, a plurality of housing segments arranged along the shaft, and a housing communicating hole formed in at least one of the housing segments. An annular groove permits communication between the shaft communicating hole and the housing communicating hole. An annular leakage-preventing member between the shaft and the housing blocks fluid movement in an axial direction of the shaft. The shaft includes a cylindrical shaft portion and a small-diameter portion formed at one end. At least one pair of rotating supports support the shaft and the housing. One of the rotating supports is disposed on the small-diameter portion. An outside diameter of one of the rotating supports is smaller than an outside diameter of the shaft and also is smaller than inside diameters of the plurality of housing segments.

Abstract: A condensate draining pipe is provided for a heating system, a ventilating system, and/or an air conditioning (HVAC) system that includes, but is not limited to a condensate feed portion and a condensate drain portion. The condensate feed portion and the condensate drain portion are connectable to one another by a press-fit coupling assembly comprising an O-ring seal.

Abstract: A polymeric pipe fitting assembly for joinder with a polymeric pipe section without using adhesives or other chemicals comprises a polymeric fitting and an elastomeric gasket formed as a unit, preferably by molding. The fitting has a main body portion with a pipe-receiving socket portion at one end. The gasket has a first axial portion molded in intimate sealed surface engagement interiorly within the socket portion and a second integral axial portion projecting axially from the socket portion. The axial portions of the gasket form a continuous interior wall surface for receiving a polymeric pipe section in peripheral surface contact with an exterior surface of the pipe section. The second axial portion of the gasket is encircled by a mechanical clamping device for sealing the gasket against the exterior of the pipe section.

Abstract: A plug in fitting for direct connection into an aperture in a housing. The fitting includes an inner cylindrical member having a body with an external diameter, a first end, and an opposed, second end having an radially extending cam. An outer sleeve includes a body and an inner diameter slightly larger than the external diameter of the inner body. A first end of the outer sleeve terminates in a radially extending flange larger than the aperture. A second end of the outer sleeve is opposed to the first end.

Abstract: A fluid connection assembly (10) includes a metal tube (22) having a flared end and a plastic manifold (12) having a port (14). The port (14) includes an annular collar (16) and an annular recess (18) that receives a seal (20). The metal tube (22) is arranged over the port (14) and engages the seal (20). The flared end of the metal tube (22) abuts the annular collar (16) of the port (14) when the metal tube (22) is installed. A plastic retainer (28) is molded over the annular collar (16) of the port (14) and the flared end of the metal tube (22) to retain the metal tube (22) axially on the port (14) of the manifold (12).

Abstract: A plug-in part for a plug connector arrangement is provided. The plug-in part being in the form of a piece of tubing and having a sealing portion, comprising a sealing element enclosing the piece of tubing in a circumferential direction, and a locking portion with at least one undercut, and it being possible for the plug-in part to be plugged into the receptacle of a coupling part of the plug connector arrangement in order to produce a fluid-tight connection, and for at least one locking element of the coupling part to engage behind the plug-in part in the region of the undercut. In order to develop the plug-in part so as to reduce the risk of the sealing element being adversely affected, the undercut is formed by a protrusion which projects from the outside of the piece of tubing and extends circumferentially merely over a sub-region of the piece of tubing.

Abstract: A novel design for the connection of lengths of polyvinyl chloride (PVC) casing. Each length of casing has a male end and a female end. The female end has a narrowing interior diameter with its wider interior diameter at its outermost end sufficient to receive the male end of similar length of casing for connection. The diameter of the female end narrows to a diameter which is less than the outer diameter of the male end. The male end has a lip at its leading edge and is slotted and compressible when forced through the narrowed diameter of the female end. A groove in the interior surface of the female end is sufficient to receive the lip at the leading edge of the male end. When the lip at the leading edge of the male end reaches the groove, it allows the compressed male end to expand with the groove receiving the lip therein. The connected lengths of casing are locked together in this manner.

Abstract: A pipe fitting is made of plastic, such as polysulphone PSU or polyphenylsulphone PPSU. At least one end of the pipe fitting (1) comprises an external thread (2) for connecting the pipe fitting (1) to a mounting element, such as a pipe or a mounting piece, e.g. a tap. The thread (2) comprises a ridge (3). Between the ridges (3) there is a continuous helical groove (4). On the bottom of the groove (4) between the ridges (3) of the thread (2) there are protrusions (5).

Abstract: The diameter of a front end opening section (20-1) extending rearward over a predetermined length from a front end opening of a male member reception hole (20) is larger than a diameter of a male member reception section (20-2) of the male member reception hole that follows the front end opening section. The backup ring (18) is allowed to engage an inner wall surface (20-3) of a front end opening section (20-1) as a backup ring (18) is pressed radially outward from an annular groove (24) by a seal ring (16) that is deformed by engagement with the inner wall surface of the male member reception hole (20) when a male coupling member (12) begins to be inserted into the male member reception hole (20), which prevents the backup ring (18) from coming out, in a radially outward manner, from the annular groove (24).

Abstract: A quick connect coupling having a clip, a port having an interior annular groove adapted to support the clip, a forward cylinder, a rear cylinder, and a first transition ramp, and defines a port peak distance. The coupling also has a sealing element. Additionally, the coupling also has a stem having a male connection portion including a forward annular seal groove adapted to receive the sealing element, an annular lead-in surface, a leading support cylindrical surface, a following support cylindrical surface, a camming ramp, and defines a stem peak distance. The port has an intermediate cylinder between the forward cylinder and the rear cylinder and has a second transition ramp between the forward cylinder and the intermediate cylinder and the male connection portion has a centering ramp and an intermediate support cylindrical surface between the leading support cylindrical surface and the following support cylindrical surface.

Abstract: A sealing arrangement for a hydraulic plug-in connection for use in particular in the motor vehicle industry for hydraulic clutch and brake systems is fitted on a hydraulic plug-in connection and has a socket and a plug-in fitting which can be connected thereto. The plug-in fitting is attached to a hydraulic tube. The plug-in fitting has a sleeve and a sealing element fixed thereto, which seals off the plug-in connection both from the hydraulic tube and from the exterior of the socket. The sealing element and the end of the sleeve which receives the sealing element are designed so as to be able to install the sealing arrangement without it being possible for the sealing element to be separated axially from the sleeve when the plug-in connection is released.

Abstract: A pipe connecting structure which can prevent electrical charge of a plastic coated metal pipe using a simple structure. The structure includes beads 5a, 5b, 5c protruding from the outer surface of the end of a plastic coated metal tube 3, which is obtained by coating the outside of a bare metal pipe 1 with a nonconductive plastic film 2. The plastic film 2 is removed from the tip of the bead 5a to expose the circumferential surface of the bare metal pipe 1, the exposed portion is made to contact the inner surface of a conductive tube 4, and the plastic coated metal tube 3 and the conductive tube 4 are connected together.

Abstract: The front end portion of a fitting projection from the portion on which a backup ring is mounted to the front end, has a diameter smaller than the inner diameter of the backup ring. The backup ring is endless in the circumferential direction thereof. The backup ring functions as a sealing member.

Abstract: A quick connect coupling having a clip, a port having an interior annular groove adapted to support the clip, a forward cylinder, a rear cylinder, and a first transition ramp, and defines a port peak distance. The coupling also has a sealing element. Additionally, the coupling also has a stem having a male connection portion including a forward annular seal groove adapted to receive the sealing element, an annular lead-in surface, a leading support cylindrical surface, a following support cylindrical surface, a camming ramp, and defines a stein peak distance. The port has an intermediate cylinder between the forward cylinder and the rear cylinder and has a second transition ramp between the forward cylinder and the intermediate cylinder and the male connection portion has a centering ramp and an intermediate support cylindrical surface between the leading support cylindrical surface and the following support cylindrical surface.

Abstract: An improved tubular system for transporting a fluid at high temperature and high pressure is described wherein the improved tubular system includes a first rigid tubular segment having an axial bore including a male connector end fitting portion terminating at a proximal end thereof, the male connector end fitting portion comprising a radial shoulder surface having an outer circumferential rim, the radial shoulder surface being perpendicular to the longitudinal axis of the first rigid tubular segment, the male connector end fitting portion further comprises an end fitting body section exhibiting a frusto conical configuration slpingly extending a specified length from the circumferential rim toward the proximal end of the tubular segment; a seal member fixed on a tubular surface of the first tubular member at the terminus of the end fitting body section, with the proviso that the seal member is fixed on the tubular surface in the absence of a groove in the first tubular surface; and a second rigid tubular seg

Abstract: A novel design for the connection of polyvinyl chloride (PVC) casing. Each length of casing has a male end and a female end. The female end has a narrowing interior diameter with its wider interior diameter at its outermost end sufficient to receive the male end of similar length of casing for connection. The diameter of the female end narrows to a diameter which is less than the outer diameter of the male end. The male end has a lip at its leading edge and is slotted and compressible when forced through the narrowed diameter of the female end. A groove in the interior surface of the female end is sufficient to receive the lip at the leading edge of the male end. When the lip at the leading edge of the male end reaches the groove, it allows the compressed male end to expand with the groove receiving the lip therein. The connected lengths of casing are locked together in this manner.

Abstract: A hose connector adapted to have a polymeric hose fitted on the outer periphery of the hose connector. The hose connector comprises a metal tubing and a sealing element. The sealing element includes a ring portion and a resilient member portion attached to the ring portion.

Abstract: A connecting element for connecting a fuel line to a fuel injector having a first connecting sleeve, which may be inserted into a receiver opening in the fuel line, and a first sealing element positioned on the first connecting sleeve. The connecting element may have a second connecting sleeve, on the end diametrically opposed to the first connecting sleeve, which may be inserted into a recess in the fuel injector and on which a second sealing element is positioned. A radially expanded region may be formed between the first and second connecting sleeves, whose transition to at least one of the two connecting sleeves may be formed as a first contact surface, which, when the connecting element is mounted, may be in contact with a corresponding surface on one of the adjoining components.

Abstract: An externally threaded male hydraulic coupling member adapted for threaded and sealed attachment to a port body with a female port. The male coupling member having a tubular member with a threaded end, a bore extending through the member, a first cylindrical peripheral undercut portion longitudinally adjacent the threaded end, a series of intermediate external threads, and a second cylindrical undercut portion. The coupling member having a seal member and an annular ring member located in peripheral sealing contact with the first undercut portion. Wherein upon attachment, the seal member is encapsulated by the annular ring, the female port and the first undercut portion forming an annular chamber having a longitudinal extent greater than the seal member thickness. The coupling member also having a lock nut threadedly attached to the intermediate threads with a longitudinal end located between the annular ring and the intermediate threads.

Abstract: A quick connect hose coupling for connecting a hose to a fixture of the type having a hose stem portion including a hose insert portion, having a fixture portion including a fixture connection portion, and having a joinder portion is disclosed. The joinder portion includes a male connection portion and a female connection portion. Each of male connection and female connection portions are adapted to join in a sealing and locking manner upon being pushed together. The coupling further includes threads and wrench mating flats adapted to disconnect the hose from the fixture. It is improved by the male connection portion being a unitary structure having a leading support cylindrical surface, a following support cylindrical surface, and a transition surface intermediate therein between. The leading support cylindrical surface has a leading radius. The following support cylindrical surface has a following radius. The following radius is larger than the leading radius.

Abstract: A pipe formed from a concrete cylinder has an end ring with a ferrule which can be snuggly mounted on one end of the pipe and a skirt axially adjacent to the ferrule for receiving a mail endpiece of another pipe. The ferrule is expanded as it is mounted on the cylinder and exerts a compressive force against the outer peripheral face of the cylinder for forming a secure seal. A rib may be disposed on an inner annular surface of the ferrule and an adhesive may be applied for enhancing the seal between the cylinder and the ferrule.

Abstract: A thermal expansion connection for rigid pipes in low-pressure applications subject to thermal expansion and shrinkage. The connection is formed between the distal end of a first rigid pipe received within the proximal end of a second rigid pipe. At least one seal is disposed between the first and second rigid pipes to prevent fluid communication through the connection. The second rigid pipe defines a collar at the proximal end thereof for receiving the distal end of the first rigid pipe and the seals. The first rigid pipe distal end defines a radial recess for receiving and maintaining the position of each seal. A gap is defined between the first rigid pipe distal end and the second rigid pipe collar to allow for thermal expansion and contraction of the first and second rigid pipes.

Abstract: The pipe coupling device includes a sleeve having an end adapted for receiving a pipe. The end has a sealing cavity defined between the outer surface of the pipe and the interior surface of the sleeve. A sealing gasket is adapted for arrangement within the sealing cavity of the sleeve for compression into sealing engagement with the pipe. A gripper ring is adapted for encircling the pipe and has a radial inner surface having a plurality of gripping members for gripping the pipe upon coaxial compression of the gripper ring. An intermediate ring is adapted for encircling the pipe between the sealing gasket and the gripper ring, and has a restraining member adapted for restraining the gripper ring to prevent the gripping members from gripping the pipe until after the sealing gasket is compressed into sealing engagement with the pipe.

Abstract: A molded plastic tubular coupling including a plastic sleeve having an integral head at one end. The sleeve provides a cylindrical outer surface to engage in a corresponding bore of another component. The cylindrical outer surface has an encircling annular recess and an integral radially extending flexible annular diaphragm formed in the recess. The diaphragm has an outer periphery extending outwardly from the cylindrical surface to engage and grip the corresponding surface of another component.

Abstract: A hammer union comprises a thread end, a nut end and a hammer nut which, when cinched up, compresses a composite seal assembly thereby preventing leakage. The seal assembly comprises a metal insert of a size to pass into the seal groove of conventional hammer unions and a small seal acting between the insert, the thread end and the nut end. The small seal is conveniently an O-ring and is of a size that is compressed when the seal assembly is inserted into the thread end of the hammer union, thereby preventing the seal assembly from falling out of the threaded end when it is inverted.

Abstract: The present invention relates to a tube coupler which can easily perform a manufacturing process by omitting a direct process for a socket by connecting a easily-processed cocking ring to the socket.

Abstract: A copper pipe has a circumferential groove formed in an outer wall to receiver an O-ring seal. The groove is formed a pre-set distance from a free end of the pipe. Two pipe lengths are jointed together by a coupling having a housing with pipe seal-receiving seats at each end for receiving the O-ring seal fitted to the pipe. Caps screw threadingly engage the housing to clamp the pipe lengths in the housing. The fitting can be pre-assembled and used as a push-in fitting with a subsequent tightening by hand.