An adjustable fracturing system is provided. The system includes an adjustment joint configured to be varied in length to facilitate coupling of a fracturing manifold to a fracturing tree. In one embodiment, the system may also include the fracturing manifold and the fracturing tree. Additional systems, devices, and methods are also disclosed.

A telescopic wand for a vacuum cleaner includes an inner tube, an outer tube, and a catch assembly. The catch assembly includes a catch and a leaf spring. The catch pivotally mounts to the outer tube and includes a button and a locking stub. The leaf spring extends between the catch and the outer tube and exerts a biasing force on the catch. The catch pivots between lock and unlock positions. The catch is biased by the force to the lock position, and depressing the button causes the catch to pivot to the unlock position. The locking stub engages the inner tube when the catch is in the lock position to prevent movement of the inner tube relative to the outer tube. The locking stub disengages the inner tube when the catch is in the unlock position to permit movement of the inner tube relative to the outer tube.

An adjustable fracturing system (10) is provided. The system includes an adjustment joint (60, 62, 64, 130, 170, 224) configured to be varied in length to facilitate coupling of a fracturing manifold (22) to a fracturing tree (20). In one embodiment, the system may also include the fracturing manifold and the fracturing tree. Additional systems, devices, and methods are also disclosed.

A backflow prevention assembly is configurable with varying lay-lengths and orientations. The assembly includes coupling assemblies and valve bodies that adjust in length and/or rotation to allow for the varying lay-lengths and orientations of the backflow prevention valves and assemblies with and without certification. A coupling assembly is connected to a backflow prevention valve and includes an outer sleeve and an inner sleeve that is slidingly received within the outer sleeve. The lay-length is adjusted by slidably moving the inner and outer sleeves with respect to one another.

A pipe connection structure includes a first pipe joint, a second pipe joint and a limiting structure; the second pipe joint and the first pipe joint are connected through insertion, an outer surface of the second pipe joint is provided with a first fitting structure, an end of the limiting structure is connected to the first pipe joint, and another end is provided with a second fitting structure; in a direction of the insertion, the second fitting structure and the first fitting structure are fitted to block each other, and the second fitting structure and the first fitting structure are fitted with a clearance.

A wand assembly for a vacuum cleaner includes a first wand, a second wand telescopically arranged with the first wand, and a rotatable locking cuff including first and second locking ramps. The first wand includes a first plurality of grooves arranged in a first row and a second plurality of grooves arranged in a second row, with each row extending in a longitudinal direction. The second wand includes first and second locking teeth integrally formed with the second wand and engageable with the respective first and second pluralities of grooves. Rotation of the locking cuff relative to the wands causes the first locking ramp to deflect the first locking tooth into engagement with one of the first plurality of grooves, and causes the second locking ramp to deflect the second locking tooth into engagement with one of the second plurality of grooves to fix a length of the wand assembly.

A sliding connector pipe assembly having a pipe defining an axis and configured to direct fluid flow, a sliding connector slidably positioned around an end portion of the pipe, the sliding connector being selectively slidable between an extended displacement and a retracted displacement relative to the pipe, and a locking mechanism that selectively prevents axial movement of the sliding connector from the extended displacement to the retracted displacement. The locking mechanism prevents the sliding member from transition from the extended displacement to the retracted displacement regardless of the rotational orientation of the sliding connector relative to the pipe about the axis.

This invention is a telescopic pipe structure, which comprises an inner pipe, an outer pipe, and an adjusting mechanism. The inner pipe is installed in a hollow portion of the outer pipe and can be displaced relative to the outer pipe to adjust the length of the telescopic pipe structure. The adjusting mechanism is mounted on the outer pipe and is used to fix the relative position between the outer pipe and the inner pipe. A protruding piece is provided on the outer surface of the inner pipe, while an inwardly protrusion is provided on the adjusting mechanism. When the protrusion on the adjusting mechanism contacts the protruding piece on the inner pipe, the inner pipe will be unable to elongate relative to the outer pipe, thereby preventing separation between the inner and outer pipes and enhancing convenience during use.

A kit of parts for releasably coupling and securing a tubular element to a connector fitting is disclosed, along with related methods. The kit includes the tubular element, a first clamping ring configured to attach to the tubular element, a second clamping ring, and a latch pivotably attached to the second clamping ring at a pivot axis. A tip of the latch includes a barbed hook extending radially inward in relation to the second clamping ring with the barb extending axially towards the second clamping ring such that an undercut is shaped between an axially extending body section of the latch and the barb. The first clamping ring includes a groove adapted and configured to receive the barb, where a rim shaped between the at least one groove and a radial outer circumference of the first clamping ring is sized and configured to be received within the undercut.