Abstract: A steel ring includes a locking component. The locking component is provided on an inner surface of a ring body in a protruding manner. The locking component includes locking teeth, and the locking tooth is sheet-like and includes a fixed part and a contact part. Multiple locking teeth constitute a first locking tooth group, and with regard to the locking teeth in the first locking tooth group, the distance between the fixed parts is smaller than the distance between the contact parts. Multiple locking teeth constitute a second locking tooth group, and with regard to the locking teeth in the second locking tooth group, the distance between the fixed parts is greater than the distance between the contact parts. The ring body has a first state and a second state. When the ring body is in the first state, the ring body is in an unclosed annular shape, and when the ring body is in the second state, the ring body is in a closed annular shape.

Abstract: A fitting for a pipe has a cylindrical sleeve and a spigot fitted concentrically within the sleeve. The sleeve is slidable along the spigot in a proximal direction. The sleeve has a gripper ring cavity with a conical bearing surface with a diameter that is smaller at the distal end and a larger at the proximal end. One or more gripper rings fit within the cavity and slidingly engage the bearing surface. The spigot has an outer surface sized to fit within a proximal end of the pipe. The inner surface of the gripper rings and the outer surface of the spigot define an annular space with a first radial width sized to accept insertion of the proximal end of the pipe. When the sleeve is moved with respect to the spigot in the proximal direction toward a sealed position, the rings are inwardly compressed by the bearing surface to grip an outer surface of the pipe. The end of the pipe is drawn into a space between the sleeve and the spigot with radial width smaller than the first radial width.

Abstract: A system includes an upper connection having a ring shape with an external surface, where upper splines are formed on the external surface and the upper connection is fixed to the upper section. The system also includes a lower connection having a ring shape with an internal surface, where lower splines are formed on the internal surface and the lower splines are configured to mate with the upper splines of the upper connection. Further, the system includes a fishing sub having a first lateral end and a second lateral end, where the first lateral end is fixed to the lower connection by shear pins configured to shear when a pre-determined tension is applied to the system, and the second lateral end is fixed to the lower section. The upper connection is inserted into the lower connection to form an engagement between the upper section and the lower section.

Abstract: A load bearing flexible conduit system for use in a body of water and adapted for deployment from a reel located on a water going vessel into the body of water is disclosed. The system comprises a number of lengths of load bearing flexible conduit, each length of load bearing flexible conduit provided with an inner layer having a throughbore and a load bearing outer layer. A joint for connecting the lengths together has a body having a longitudinal axis and a throughbore and at least one flexible coupling to permit at least one of the ends of the respective first and second lengths of load bearing flexible conduit to move relative to the longitudinal axis of the joint.

Abstract: A conduit coupling assembly having first and second sleeve members configured to be tightened to a fluid conduit, an arcuate radial split gasket configured to be positioned between the first and second sleeve members and the fluid conduit, the first sleeve member having an inwardly-facing arcuate radial surface with first and second arcuate portions and a third arcuate portion between the first and second arcuate portions that has a radius from the longitudinal axis of the pipe that is less than the radius of the first and second arcuate portions, and the second sleeve member having an inwardly-facing arcuate radial surface with first and second arcuate portions and a third arcuate portion between the first and second arcuate portions that has a radius from the longitudinal axis of the pipe that is less than the radius of the first and second arcuate portions.

Abstract: An example medical device is disclosed. The example medical device includes an elongate member having proximal end region and a distal end region. The medical device also includes an end effector having a proximal end region and a distal end region. Additionally, the medical device includes a connection member coupled to the distal end region of the elongate member and the proximal end region of the end effector, the connection member having a first outer surface and a first outer diameter. The medical device also includes a first bushing positioned adjacent to the connection member, the first bushing having a second outer surface and a second outer diameter larger than the first outer diameter.

Abstract: Spigot device including a spigot formed with exterior gripping teeth and sleeve device to telescope over the spigot. The sleeve device is formed with a radially inwardly opening, distally contracting conical bearing surface which mounts a radially inwardly contractible gripper ring device captive therein, and constructed to be driven radially inwardly by the bearing surface as the sleeve is drawn proximally on the spigot to grip a plastic pipe trapped in the annulus between the sleeve and spigot.

Abstract: An underground storage tank for the containment of liquids such as gasoline or water is comprised of a cylindrical body with ribs provided about the circumference of the body. The ribs have a cross-section in the nature of a rectangular sine wave. By providing lower ribs, no greater than one half-inch in height above the surface of the cylindrical body, and as much as five or six inches in breath, strength is maintained with a reduction in the amount of material used. The rib may be strengthened against crushing forces by providing linear material of high modulus, such as graphite or carbon fiber, in the upper portion of the rib. The resulting tank can be built to take advantage or recent changes in transportation regulations and may extend up to eight and one half feet, providing for more economical tank manufacture from source to installation.

Abstract: A pipe coupler having a function of covering a pipe. The pipe coupler includes a coupler main body having a hollow, a grip ring provided in the hollow and configured to fix the pipe so as to allow the pipe to be inserted thereinto and prevent the inserted pipe from coming out, and a packing member provided in the hollow, and configured to seal a gap between the coupler main body and the pipe when the pipe is inserted into the packing member. The packing member includes a pipe locking protrusion protruding inward from an inner surface of a lower end portion thereof so that a front end portion of the pipe inserted into the packing member is surrounded and covered. The pipe coupler can prevent a coating layer of a pipe from being peeled from a tip of the pipe.

Abstract: A pipe connector or coupling for providing a coupling to a pipe, the pipe coupling comprising: at least one gripper ring which receives a pipe therewithin, wherein the at least one gripper ring comprises a gripper which includes a plurality of blade elements which are displaceable between a first, pipe-receiving configuration in which the pipe is receivable within the at least one gripper ring and a second, inwardly-displaced inserted configuration in which the blade elements are inserted into an external wall of the pipe; and a clamp for applying a radially-inward compressive load on the at least one gripper ring to displace the blade elements thereof from the pipe-receiving configuration to the inserted configuration.

Abstract: A brake cable includes joining member including a hollow body having external threads, an externally extended rim at an end, and a channel through the body; a fastening member including an internal space having internal threads, a hollow extension extending out of a first end, a tunnel through the extension to communicate with the space, and an annular surface on a first end of the space adjacent to the extension; a sealing assembly urged against the annular surface; a cable assembly including a flexible sleeve having an outer annular flange; and an oil tube having a first end secured to the extension. The cable assembly is through the oil tube. Both the joining member and the fastening member are configured to compress the sealing assembly so as to urge the sealing assembly against the annular surface for preventing lubricant from leaking.

Abstract: A coupling has first and second segments attached to one another end to end surrounding a central space for receiving pipe elements. A spring assembly attaches the segments at one end and an adjustable attachment assembly attaches the segments at the opposite end. The spring assembly biases the segments away from one another sufficient to permit insertion of the pipe elements into the central space while the segments are attached to one another. The coupling may include a split ring toothed retainer for coupling plain end pipe elements, or it may have arcuate keys which engage grooved or shouldered pipe elements.

Abstract: A coupling has first and second segments attached to one another end to end surrounding a central space for receiving pipe elements. A spring assembly attaches the segments to one another at a first end and an adjustable attachment assembly attaches the segments to one another at a second end opposite to the first end. The spring assembly cooperates with the attachment assembly to bias the second ends of the segments away from one another sufficient to permit insertion of the pipe elements into the central space while the segments are attached to one another.

Abstract: A pipe coupling for plain end pipe is formed of segments joined end to end surrounding a central space. The segments are connected end to end by lugs on each segment with fasteners extending between them. Each segment has channels on opposite sides that face the central space with floors at different radii. Retainers are received within the channels. The retainers have teeth and one or more offset tabs that cooperate with the channels to prevent improper assembly. A ring seal is received within a channel positioned in each segment between the retainer channels.

Abstract: A restraint system for use in securing temporary flow lines that include multiple pipe sections, each pair of pipe sections connected together with a fitting or coupling such as a hammer joint coupling. The system includes multiple pluralities of endless loop slings connected end to end with a cow hitch or girth hitch knot. Disconnectable fittings (e.g., shackles) are placed every three or more slings so that easy disassembly is afforded in case of leakage or other failure.

Abstract: The disclosure relates to an end fitting (40) for connecting a flexible pipe for transporting a cryogenic fluid, comprising thermal insulation means (65) interposed between the cold part (41) of the connecting end fitting and the rear part (51) for crimping the end of a leak proof sealed external sheath (9) of said flexible pipe.

Abstract: A pipe joint structure may include a joint body, an O-ring seal piece, an auxiliary retaining ring, a nut lock, and a connecting base, wherein the joint body has a first opening and a second opening connecting and transmitting through with each other, a cam ring is configured in the first opening, a first thread section is configured on the outer margin of the joint body corresponding to the first opening, the auxiliary retaining ring has a first end, a second end, an inner ring portion, and an outer ring portion, a function inclined plane is formed by cone shape expansion in the middle part of the inner ring portion toward the first end, a second thread section and a stepped blocking portion are configured in the inner margin of the lock nut.

Abstract: A boot assembly that reliably seals the secondary containment area utilizing a split boot device that can be installed without disconnecting the primary piping is disclosed. The seal includes first and second containment housings, each supporting a pair of partial ring shaped seals. The containment housings can be positioned about the primary and secondary pipes from opposing sides thereof so that disconnection of the primary pipe is not required to secure the seal in place.

Abstract: A pipe coupling for connecting together the ends of two pipes including a tubular casing for fitting around a pipe; tensioning means for tightening the casing around the outer surface of the pipe; and a dynamic axial restraint system comprising at least one resilient gripping ring mounted within the casing for gripping the outer surface of the pipe. The gripping ring includes an outer surface engaging with an inner surface of the casing and adapted to roll against the inner surface of the casing upon axial loading of the pipe; and an inner gripping surface for engaging the outer surface of the pipe. The gripping surface of the resilient gripping ring is adapted such that upon rolling of the outer surface against the inner surface of the tubular casing, the area of the gripping surface in contact with the pipe increases.

Abstract: A parking brake actuator for a disc brake caliper. The parking brake actuator includes a tapered collet having an axial bore, the tapered collet slidably positionable within a bore of the disc brake caliper; an actuator rod having a first end and a second end, the actuator rod slidably positionable within the axial bore of the collet; means for receiving a force for placing the parking brake actuator in a non-actuated condition; and a first biasing means structured and arranged to apply a force sufficient to place the parking brake actuator in an actuated condition when the force for placing the parking brake in a non-actuated condition is reduced or eliminated.

Abstract: A plumbing fitting includes a housing defining a socket with an internal annular shoulder for sealably receiving a cartridge. A two-piece cylindrical cartridge has semi-cylindrical interlocking halves that lockably engage a grab ring positioned between the interlocking halves of the cartridge. The grab ring has inwardly projecting annularly spaced tines for gripping and holding a fluid conduit inserted into the housing and cartridge past the grab ring. The cartridge includes a ring seal positioned against the annular shoulder and internal wall of the socket for sealably coupling the cartridge to the socket and sealably coupling a fluid conduit to the cartridge. The cartridge may be held within the housing socket by a crimped-over end. Also, an integral release ring may be coupled to the cartridge, such that a separate tool is unnecessary to disconnect a fluid conduit from the fitting.

Abstract: A device and method of use for a fill pipe anti-siphon device are described. The device and method of use are designed to provide a simple, reliable, cost-effective means to prevent theft of fuel or other liquids from holding tanks, such as a fuel tank on a semi-tractor trailer diesel truck, by siphoning. The device is a barrier which prevents insertion of a siphon hose or tube of suitable diameter to efficiently siphon fuel of other liquid from a tank. The barrier device allows for the simultaneous filling of a tank through a fill pipe neck while venting an from the tank at a sufficient rate to prevent or minimize backflow of fuel or other liquid during fueling or tank filling from the tank when using a high-flow fill nozzle.

Abstract: An apparatus for unsealing a pipe in a pipe assembly is disclosed. The apparatus has a seal for minimizing leakage from the pipe and a spring attaching to both the seal and the pipe assembly. If the seal is to be removed, a spring force of the spring acts against and moves the seal for removal of the seal.

Abstract: A retaining ring for a constant velocity joint includes an annular, C-shaped retainer body that tapers inwardly toward the longitudinal axis from a first end opening and a first end to a second end opening and a second end, the retainer body comprising a first retainer leg and an opposed second retainer leg, the first retainer leg and the second retainer leg joined together on a proximal end and separated on respective distal ends by a gap. It also includes an axially extending annular rib disposed on the first end of the retainer body. It further includes a relief feature formed on the second end of the first retainer leg and a relief feature formed on the second end of the second leg, the relief feature on the first retainer leg and the relief feature on the second retainer leg disposed closer to the proximal end than the distal ends.

Abstract: A coupling for joining plan end pipe having a housing made from a casting with a pocket disposed in the casting. The pockets holds an insert that engages the plain end pipe, and the insert is secured to the housing without the use of machined features on the housing or the use of additional components or adhesives to secure the insert to the housing. In a preferred embodiment, each insert is disposed in a pocket on the inner surface of the coupling assembly, with projections extending from the inner surface disposed within cavities on opposing sides of each insert to retain the insert within the pocket by obstructing the opening to the pocket. A preferred device and method of forming the projections is a press that deforms the projections to retain the inserts in the pockets.

Abstract: A splicing ring for tubular high-pressure fluid conduits includes an inner metal ring formed of two independent and identical band halves having side edges. The side edges are folded downwards at a right angle and are configured as positioning and retaining elements of an O-ring. The O-ring rests upon the ends of the two tubular conduits to be spliced.

Abstract: An apparatus for reinforcing a jet pump riser includes: an elbow upper clamp for covering a riser elbow coupled to a thermal sleeve from an upper side thereof; an elbow lower clamping member for clamping the riser elbow from a lower side thereof; an elbow vertical portion clamping member for covering a vertical portion of the riser elbow; and an elbow horizontal portion clamping member for covering a horizontal portion of the riser elbow. These members are disposed in different orientations with respect to the elbow upper clamp so as to fix the thermal sleeve, the riser elbow and the riser pipe.

Abstract: A wellhead coupling and method for coupling and sealing an annulus formed between overlapping ends of an outer pipe and an inner pipe. A clamp housing grips the inner pipe, forms a horizontal landing base for the outer pipe, and forms circumferential ports aligned with the annulus. A seal ring and upper metal ring are located in the annulus, the seal ring being formed with ports to align with ports of the clamp housing, and the upper metal ring being formed with threaded holes to align with ports of the seal ring and the clamp housing. Threaded seal engaging members extend through the aligned ports for threaded connection in the threaded holes of the upper metal ring. A seal energizing member located within or below the clamp housing pulls downwardly on the threaded seal engaging members to energize the seal ring into sealing relationship in the annulus.

Abstract: A conduit coupling system, sealing device, bell and method of use are disclosed herein. The system comprises at least two piping components, and a sealing device. A first component has a bell and a second component has a spigot, the spigot is adapted to mate with the bell. The bell comprises a first end and a second end, the first end coupled to the first component. The bell has a concave annular inner surface and a diameter of the annular inner surface adjacent to the first end of the bell is greater than a diameter of the annular inner surface adjacent to the second end of the bell. The sealing device comprises a locking segment comprising a convex outer surface and a K-type gasket coupled to a locking segment or a non-restraining anti-extrusion segment. The sealing device is adapted to fit between the bell and the spigot.

Abstract: A sleeve-shaped anchoring element for pipe couplings sealing pipes, with an essentially cylindrical housing and a sealing element of rubber-elastic material that is arranged in the housing. The anchoring element is arranged in the housing and has individual longitudinal supports connected to each other by means of deformable webs and having a C-shaped longitudinal section. Ends of the longitudinal supports are configured as limbs angled radially inwards. Free ends of the limbs can be brought into engagement with at least one of the pipes when the pipe coupling is clamped. Only one single web is provided between two adjacent longitudinal supports, and the two webs of a longitudinal support are arranged offset with respect to each other in the axial direction for connection to the adjacent longitudinal supports.

Abstract: A tube coupling system (1) for a pressurised fluid system comprising a coupling body (3) for receiving a tube (5) of a pressurized fluid system, a leakage seal (7) for preventing fluid supplied from the pressurized fluid system via the tube to enter the coupling body (3), a gripping member (9) for gripping the outer surface of the tube (5) received in the coupling body (3), and an environment seal (11) for preventing intrusion from outside of the coupling body (3), characterized in that said environment seal (11) is at least partially displaceable and arranged to be pressed at least partially off a sealing seat when there is internal fluid pressure in the coupling body (3) resulting in a fluid stream out of the coupling body (3) and said fluid stream to the outside of the coupling body (3) indicates a leakage from the pressurized fluid system.

Abstract: A connection device for the plug connection of at least one media line includes a housing part with at least one reception orifice for plugging in a plug portion connected or connectable to the at least one media line. The housing part includes a basic part and an insert part. The basic part is releasably connected with a form fit to the insert part via a latching connection. The latching connection holds the insert part releasably and is formed by a C-shaped spring clip which is seated on the outside of the basic part and engages with at least one latching extension radially through an orifice of the basic part into a circumferential latching groove of the insert part.

Abstract: A connector device having a housing part and a clamping ring arranged in the receiving hole and cooperating with an inner cone of the housing part to lock a plugged-in media conduit. An inner insertion piece is removably connected to a base piece and provided with the inner cone. The insertion piece has at least two radially elastic spring arms to enable removal of the conduit. Radially outward-protruding catching extensions of the spring arms engage catching holes for detaching purposes. A contamination seal is disposed in the region of free ends of the spring arms to circumferentially rest upon the media conduit. The catching extensions are disconnected from the sealing area via a deformation zone so that the radial detaching movement of the catching extensions is performed without being influenced by the contamination seal because the deformation zone is deformed.

Abstract: A pipe fixing system comprises a cylindrical body having a tapering part whose diameter is smaller as it goes towards the top of the body; an entry provided in the body and having a bolt hole and a projection; a fixing chip provided in the tapering part, having, in the center, a bolt hole extending from the top to the bottom of the chip and having teeth on the surface contacting a pipe; and a bolt passing through the bolt hole of the entry and that of the fixing chip. A a spring recess and a bolt end are provided on lower part of the bolt and a spring is provided in the spring recess to prevent unintentional movement of the bolt.

Abstract: A tube coupling including a body having a bore and an open end, a slidably movable jaw ring received in the bore, a bushing fitted into the body open end having a surface facing the movable jaw and defining a stationary jaw, and a resiliently expandable grab ring disposed in the bore between the movable and stationary jaw. With a tube end being inserted into the bore and through the grab ring, and with the tube being grabbed by the grab ring to retain the tube end in the bore, the movable jaw is responsive to fluid pressure received within the tube to slidably move towards the stationary jaw face such that a portion of the grab ring is clamped therebetween.

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 coupling device for a tube comprising a coupling piece with an insert end for the tube and a sealing organ which is suitable for realizing a seal around the tube inserted in the coupling piece, whereby the sealing organ comprises a series of elements which together form a ring enclosing the tube, and whereby the elements have been provided with at least one grip ring, extending over at least a part of the circumference of the tube, which at least one grip ring is embodied with inwardly and/or outwardly pressed out first projections and second projections extending away from the surface of the grip ring, whereby the first projections and the second projections are provided with, in the plane of these projections extending first anchor teeth and second anchor teeth.

Abstract: Coupling element and method for connecting a connection line to a pipe connection of a washing machine having an external thread. The coupling element includes a first end and a nut with an internal thread arranged in the region of a first end. The nut includes an inner ring, an outer ring, and a slip clutch arranged between the inner ring and the outer ring.

Abstract: A plug-type connector for pipelines, having a first and a second connection end, with a first connection end being in the form of a first support body, the first support body being provided with a closure ring, the closure ring and the first support body forming an annular space for accommodating a pipe end, and for securing the pipe end, which is inserted into the annular space in a clamping manner, against axially acting withdrawal forces. The plug-type connector is distinguished in that the closure ring has at least one latching projection or latching recess with which the clamping ring can be axially secured.

Abstract: A composite gland sealing for the interlocking coupling of a housing end piece (8) including an anchoring groove (82), a plastic ring (14) and several locking inserts (20). Each locking insert (20) includes a radially external head (30) provided with a first front projection (50, 52) applicable against the annular front surface (90) of the anchoring groove (82). The head (30) comprises includes a second frontal projection (52, 50) radially shifted from the first front projection (50, 52).

Abstract: A seal anchor for pipe couplings suited for frictional connection of smooth-ended pipes. The seal anchor has a housing, and at least one sealing element, for example of rubber-elastic material, arranged therein. The anchor may be of generally L-shaped cross-section and has a first limb extending in the axial direction and a second limb extending at an acute angle to the first limb. The anchoring element blank is provided with slots which run across its width in the longitudinal direction relative to the limbs and between the limbs. One or more webs span the slots to join adjacent limbs.

Abstract: This invention relates to a tube coupling system (1) for a pressurised fluid system comprising a coupling body (3) for receiving a tube (5) of a pressurised fluid system, a leakage sealing means (7) for preventing fluid supplied from the pressurised fluid system via the tube to enter the coupling body (3), a gripping means (9) for gripping the outer surface of the tube (5) received in the coupling body (3), and an environment sealing means (11) for preventing intrusion from outside of the coupling body (3), characterised in that said environment sealing means (11) is at least partially displaceable and arranged to be pressed at least partially off a sealing seat when there is internal fluid pressure in the coupling body (3) resulting in a fluid stream out of the coupling body (3) and said fluid stream to the outside of the coupling body (3) indicates a leakage from the pressurised fluid system.

Abstract: An invention generally relates to an adjustable connector that acts as a coupling device to connect an object (such as pipe or tubing) having a range of diameters and thread styles to an item (such as a piece of equipment or another length of pipe or tubing). The device is generally comprised of a casing member and an internal member, which is further comprised of tab members positioned in tab openings in a core member. Preferably, a semi-flexible sheath covers the internal member and seals it to the casing member and the object, so that a chamber is formed between the internal member and the casing member. Mechanical compression members may be placed in the chamber. As pressure increases within the object, the chamber pressure may also increase, forcing the sheath against the tab members, which are forced against the object, holding the object in place by friction.

Abstract: A device for connecting a duct (such as pipe or tubing) having a range of sizes and shapes to an object (such as equipment, a container, or another length of pipe or tubing). The device may comprise an internal seal member and an external seal member that change shape to fit adjacent to the exterior surface of the duct. The internal seal member and the external seal member may also be positioned within a casing member. To prevent them from collapsing under thrust loads tending to pull the duct from the device, the internal seal member and the external seal member may be held in place relative to the duct and the casing member by an internal support structure and an external support structure. The invention also includes certain kits and methods of using the device.

Abstract: A joint restraint is provided for a curved pipe joint having a curved pipe section joining two adjacent pipe sections. The pipes are joined using tubular sleeves held by hose clamps to form fluid tight seals, with two clamps on each end of the curved pipe sections and two clamps on each proximal end of the adjacent pipe sections. An inner strap extends between and fastens to one of the clamps on each adjacent pipe section forming a chord of an arc. An outer strap extends along an outer periphery of the joined pipes and fastens to the other clamps on each adjacent pipe section.

Abstract: A pipe coupling (1) includes a pipe-shaped sleeve (2) being provided with a protruding flange (4) at least in one end, said flange having a tapering end face (6). The pipe coupling further including an annular gripping ring (13) divided into ring segments (17), an annular resilient sealing ring (12) provided between the flange (4) and the gripping ring (13), a pressure ring (8) and tightening means of the bolt/nut type (26, 27). The pressure ring (8) is divided into a number of separate, mutually interspaced ring segments (10) each provided with an abutment face (9) adapted to displaceably abut the end face (6) of the flange (4). The bolts (26) extend through elongated, radially extending openings (30) in the flange (4) and through clearance holes (32) in the pressure ring segments (10).

Abstract: A housing for an exhaust gas purification component encloses an interior space in which at least one receptacle is formed by the housing at the outside. An exhaust system includes at least one first exhaust line section and the housing having the exhaust gas purification component. The first exhaust line section is in engagement with the receptacle, and the first exhaust line section and the receptacle are connected to one another in a materially integral manner. A motor vehicle having the exhaust system is also provided.

Abstract: A band coupling for straight line interconnection of flangeless pipes and a built in pipe grip mechanism to resist axial separation forces is provided. The band-clamp coupling comprises an outer housing of cross-section resembling a wide, low-wall channel, the walls thereof facing the center of the pipes, and a low-wall inner channel fitting into the outer channel. The inner channel being provided with spaced-apart inwardly-facing projection adjacent to each of the inner channel walls, each projection having a first sloping side axially facing the line of pipe abutment and a second sloping side axially facing away from the line of pipe abutment. A sloped internally-toothed grip washer is disposed along each of the projection second sides; and a seal member is disposed inside the inner channel and extending along the major portion of the width thereof to abut both the first sides axially facing the line of pipe abutment.

Abstract: A toothed pipe gripping die insert has textured surfaces on the die surface opposite the pipe gripping teeth to reduce the insert-to-insert carrier contact surface area to increase unit loading such that selected loads forcing the die insert against its carrier impresses the textured pattern into the carrier surface to reduce the tendency for the die insert to slide on the die carrier surface.

Abstract: A fitting includes a body having at least two portions coupled together to form a body having a passage through the body. The passage allows at least a portion of a conduit to be located at least substantially lengthwise within the body. First and second ports are located on the body and are in fluid communication with the passage. A first seal is located on the passage wall between a first end of the body and the first port. A second seal is located on the passage wall between the first port and the second port. A translatable ring is located on the passage wall between the first and second seals. The ring moves along the passage wall when the first seal is activated so that the second seal is activated. The ring includes an opening proximate the first port to provide access to the conduit from the first port. The first and second seals provide a seal in the passage.