A vacuum inlet valve assembly has a housing configured to be mounted exterior to a preexisting wall in a structure such that the housing is connected with a conduit and the conduit is exterior to the wall and retains a hose therein, and the hose is adapted to be pulled out from a stored position within the conduit external from the wall to an extracted position, and when in the extracted position, an end cap or hose plug on the hose is releasably connected with a connection assembly in the housing. A portion of the conduit is clear or translucent or transparent so an operator can watch the end cap or hose plug approach the connection assembly.

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 flexible dual duct coupling, comprising: a coupling body having an inner flow passage and an outer flow passage therethrough; a first nut assembly configured for reversible attachment to the coupling body; and, a second nut assembly configured for reversible attachment to the coupling body, wherein the second nut assembly is opposite the first nut assembly.

A pipe system includes a first pipe section and a second pipe section arranged, and together defining a total length, along a longitudinal axis. The first and second pipe sections are movable with respect to each other so as to shorten or lengthen the total length. A fixation member clamps a portion of the second pipe section to a portion of the first pipe section. The fixation member includes an insulator which is electrically insulating and passes no electrical current between the first and second pipe sections.

A drain pipe assembly for installation of a basin includes: a drain pipe which is inserted in a drain port formed in a base of basin and has a flange of which an upper end is caught by the drain port; and a fastening member which fixes the basin against the flange, wherein the fastening member polls the drain pipe, which is exposed below the basin, in a downward direction, to upwardly press the basin, thereby fastening the basin and the drain pipe.

A fluid circuit, in particular for an aircraft, comprising at least one first duct (1) and a first connecting member (5), at least one second duct (2) and a second connecting member (6), a connector piece (3), for joining the two connection ends of the ducts (1, 2) in a leaktight manner, comprising a central sleeve (4) configured to cooperate, at a first end, with the first connecting member (5) and, at a second end, with the second connecting member (6), the central sleeve (4) having a plurality of flexible teeth (41) in order to correct any error in alignment between the first axis (X1) and the second axis (X2).

A coupling system for coupling two pipe ends (2, 3) which are each provided with an outer wall (21, 31) and, at at least one circumferential position on the outer wall (21, 31), a protrusion (20, 30) that extends radially outwardly, comprises a frame (10) which can adopt an open condition and a closed condition, the open condition allows the frame (10) to be put around the two pipe ends (2, 3) when put together for a continuation of a pipeline lumen, the frame (10) in the closed condition being configured to house the two pipe ends (2, 3) when put together for a continuation of the pipeline lumen, wherein the frame (10) comprises at least a first and a second restrictor part (11, 12), the first and second restrictor parts (11, 12) being configured to allow an abutment against the protrusions (20) of the opposite pipe ends (2) in the closed condition of the frame (10), so that the pipe ends (2, 3) are at least limited from moving away from each other in a pipeline direction by inability of the protrusions (20, 30) to pass beyond the first and second restrictor parts (11, 12), respectively.

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 coupling mechanism can be used to selectively secure two sections of telescopically engaged pipe in a fixed position relative to each other and provide a fluid (e.g., gas and/or liquid) seal between the coupling mechanism and the two pipes, regardless of whether the pipes are secured in the fixed position or are freely moveable relative to each other. The coupling mechanism can be used as part of a faucet assembly, which can include an adjustable faucet assembly including the telescopically engaged pipe.

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.