A pipe joint includes a conduit having two connection ends wherein each connection end comprises: a wall defining a receiving recess for receiving an end of a pipe length; one or more channels on the internal surface of the wall, each channel housing a sealing ring located within the channel; one or more grooves formed to a depth in an internal surface of the wall of the receiving recess; a channel communicating between the groove and an external surface of the connection end, and a connector formed from a length of material which is seatable within the groove via the channel and which is wider than the depth of the groove so that when seated within the groove the connector extends into the receiving recess; first and second pipe lengths to be connected together in the conduit, each pipe length being formed with a groove on its external surface corresponding to the or each groove in the internal surface of the wall of one of the connecting ends, such that the ends of the pipe lengths in the conduit abut each other.

A joint assembly includes a first end portion of a first hollow component, a second end portion of a second hollow component, and a first and second resilient connection member. First end portion interconnects with second end portion. First end portion includes a first and second location feature on an outwardly facing surface and axially distally facing surface respectively. Second end portion includes a third and fourth location feature on an inwardly facing surface and axially distally facing surface respectively. First end portion is slidably received inwardly of second end portion, with first location feature being aligned with third location feature to form a first annular cavity, and second location feature being aligned with fourth location feature to form a second annular cavity. First connection member is receivable within first annular cavity, and second connection member is receivable within second annular cavity, to interlock first component to second component.

A valve device (20) includes male and female housings (22, 24) that together define a fluid through-passage (28). The male and female housings have, respectively, exterior and interior annular channels (22a, 24a). The male housing is receivable into the female housing such that the exterior and interior annular channels together define a toroidal tube. First and second valve elements (30, 32) are disposed, respectively, in the male and female housings. Ball locks (36) are receivable into the toroidal tube and axially lock the male and female housings together. A lock (40) engageable when the first and second valve elements are in functional alignment and which when engaged rotationally locks the male and female housings.

A pipe system can include a coupling having an axis, axial ends and a bore. Each axial end can include a coupling spline groove formed in the bore, and a seal groove axially inboard of the coupling spline groove. The seal groove can be configured to house a seal. At least two pipes can be configured to be inserted into different axial ends of the coupling and be secured therein with retainers. Each pipe can include a pipe spline groove, a band groove axially adjacent to and radially shallower than the pipe spline groove, and a band mounted in the band groove.

A connection includes a first component, a second component, a cord member, a detent, and a catch assembly. The first component has an opening with an inner surface and a first annular groove disposed about the inner surface. The second component has a top end configured to fit in the opening. The top end has an outer surface with a second annular groove disposed about the outer surface. The first annular groove and the second annular groove are configured to form a channel in response to being disposed in cooperative alignment. The cord member is configured to be removably inserted into the channel to secure the first component to the second component. The detent is disposed on the cord member. The catch assembly is configured to engage the detent and provide resistance to movement of the cord member relative to the catch assembly.

A locking device for pipes, comprising an inner and an outer pipe provided with adjoining and corresponding circumferential grooves for releasable locking engagement via a locking ring fitted in the grooves and thus releasable locking between the inner and the outer pipe by alteration of the radius of the locking ring, wherein the locking ring has an open section or circle sector along the periphery thereof and is provided, at least at the two radial ends thereof, interrupted by the open section, with two respective guide members comprising respective guide surfaces that are slanted relative to the periphery, and wherein a first one of the guide members is provided with an end stop and a second one of the guide members is provided with a control mechanism protruding through an oblong opening provided through the outer pipe along a portion of its radial groove, wherein the radial displacement of the control mechanism along the oblong opening increases the open section or circle sector of the locking ring while simultaneously forcing the radius of the locking ring to increase for release of the locking engagement owing to the slanted guide surfaces.

A coupling can include a coupling body having an axis, an axial length, an axial center, axial ends and an inner surface comprising an inner diameter that is substantially constant over an entirety of the axial length. A single shoulder can protrude radially inward relative to the axis from the inner surface, such that the inner surface has no other shoulders. In a version, the single shoulder is not axially aligned with the axial center of the coupling body.

A fitting for connecting tubular assemblies includes a base member defining a first bore configured to receive a tube therein. A retaining band defines a second bore for receiving a portion of the base member. The retaining band defines an engagement feature on a radially outward surface configured to engage a locking mechanism of a fastening member.

A restrained pipe joining system for plastic pipe is shown comprising male and female ends each having aligned circumferential grooves which form a canal for passage of a locking keystrap. The keystrap can be formed of PEEK or PEEK reinforced with glass fiber. During manufacture, the female belled end is sequentially formed over a Rieber style gasket and then over a ring-shaped casing member. The casing member is also formed from polymeric composite materials. In some cases, the casing is reinforced with an internal metal band.

A joint assembly has first to third end portions of first to third components and an elongate resilient connection member. The first end portion interconnects with the second in a castellated arrangement. The first and second end portions have repeating arrays of first and second, and third and fourth connection portions. The first connection portion is received inward the third, and its first location feature being aligned with a third location feature of the third forming a first cavity portion, and the second connection portion axially distal surface abutting against that of the fourth, with a second location feature of the second connection portion being aligned with a fourth location feature of the fourth connection portion forming a second cavity portion. The first and second cavity portions are aligned forming an annular cavity, with the connection member being receivable within the annular cavity interlocking the first component to the second.