A pipe adapter includes a first tubular element, a second tubular element, and an annular securing member disposed around and fixed to a second portion of the first tubular element. The annular securing member has a flange portion that contacts and secures the second tubular element axially relative to the first tubular element while also allowing the second tubular element to rotate relative to the first tubular element and the annular securing member. An annular sealing member is located around the first portion of the second tubular element to provide an axial seal along the adapter.

A spoolable swivel, methods, and systems for coupling a first and second length of coiled tubing. The spoolable swivel can include an inner tubular element and an outer tubular element. The inner tubular element and the outer tubular element can both have dimpled distal ends and races on their proximal ends, defining one or more annular voids for swivel bearings.

A rotary coupling includes an annular outer section which has a female end, a threaded portion, and a Z-ring relief. A connector pipe has a connection end, a shoulder, and a seal end. A Z-ring is housed within the Z-ring relief and packing seals are housed within a packing chamber; and a retainer ring is threadably received into the threaded portion of the outer section. The retainer ring receives compression screws there-through, wherein in the engaged position the compression screws urge a packing end of the Z-ring longitudinally against packing seals thereby compressing the packing seals into the packing chamber creating a seal. The compression screws are movable between an engaged and disengaged position in order that in the disengaged position the compression pressure against the Z-ring and packing seals is released by backing off the compression screws without disassembly of the rotary coupling.

A hose connector has: a cap, a connecting pipe and an assembly pipe. The cap has an inner ring and an outer ring, and the inner ring is provided with an inner threaded hole. The cap further has a socket hole connected with the inner threaded hole, the outer ring is provided with an outer threaded section. The connecting pipe has an inserting portion at one end and a first threaded portion at another end. The inserting portion has a neck section and a stopping ring. The inserting portion is disposed in the socket hole of the cap. The stopping ring comprises at least one protrusion facing the groove. The assembly pipe has a through hole and a convex ring at one end and a second threaded portion at another end. The second threaded portion of the assembly pipe engages with the inner threaded hole of the cap.

A coupling assembly, to be flowed through by fluid, for coupling two components has a coupling element and a ball joint assembly with a female ball joint element, a male ball joint element, and a securing element. The female and male ball joint elements form a ball joint by form fit. The male ball joint element has a ball segment and the female ball joint element has an expandable ball segment. The ball segment of the male ball joint element engages the expandable ball segment so that the female ball joint element at least partially encloses the male ball joint element. The securing element contacts externally an outer contour of the female ball joint element. The coupling element forms one of the female and male ball joint elements. One of the two components forms the other one of the female and male ball joint elements.

The present disclosure provides an irrigation system for crop irrigation, and especially a centre-pivot irrigation system. The system comprises: a pivot assembly comprising a frame supporting an inlet pipe assembly for inlet of water from a water supply to the irrigation system, and a span assembly for connection to the pivot assembly to extend radially therefrom across a field. The inlet pipe assembly comprises an upper pipe segment and a lower pipe segment. The upper pipe segment is mounted in the frame for rotation about a pivot axis relative to the lower pipe segment. The span assembly comprises a distribution pipeline for fluid connection with the inlet pipe assembly to convey the water along the span assembly for distributing the water to a plurality of sprinkler heads located along the span assembly for applying the water to the field.

A dynamic sleeve seal fitting including a first sleeve having a tongue portion, a second sleeve having a groove configured to receive the tongue portion, and a first seal member coupled to at least one of the tongue portion or the groove. The first seal being configured to generate a seal between the first sleeve and the second sleeve in response to inserting the tongue portion into the groove.

A hose connector has a first connecting joint, a second connecting joint, and a connecting duct. The first connecting joint comprises an inner neck rim having an inner threaded aperture and a containment space connecting to the inner threaded aperture. The first connecting joint further comprises a threaded outer wall, and a bottom surface of the neck rim has a plurality of engaging grooves. The second connecting joint comprises a hollow base having a neck section connected to a lip, and the neck section is configured for insertion in the containment space of the first connecting joint. A top surface of the lip has a plurality of engaging protrusions pushing against the neck rim or engaging with the engaging groove. The connecting duct comprises an outer threaded section and an enlarged flange, and the connecting duct is mounted through the neck section and the lip.

A tubular joint having an outer part formed by a fitting end of a piping element, and defining a first axis, an inner part formed by a spigot end of another piping element, the spigot end received in the fitting end. The fitting end and the spigot end define a fluid internal circulation space. A flange attached on the outer part and axially abutting against a shoulder formed by the inner part. A layer of polymeric material, extending radially between the outer and inner part, having a radially outer and inner surface both surrounding the first axis and bonded respectively to the outer and inner parts. The inner part rotatable with respect to the outer part about the first axis, and the inner part defining a second axis forming a pitch angle with the first axis. The inner part, the outer part, and the flange limit the pitch angle to lower than 5°.

A coupler, adapted for being assembled and connected with a water sprayer, includes a sleeve and a coupling member adapted for being assembled and connected with the water sprayer. The coupling member and the sleeve are sleeved with each other and respectively have a first corresponding end and a second corresponding end which correspond to each other. The first corresponding end and the second corresponding end are adapted to be engaged with each other, so that the sleeve and the coupling member are capable of being mutually locked and into a non-rotatable state through the engagement and rotation meshing operation. The sleeve can be disengaged with the coupling member through axially moving the sleeve so that the sleeve is allowed to be axially rotatable.