A quick-fitting pipe fitting assembly for coupling with at least one pipe element includes a pipe fitting body, at least one coupling unit, and at least one gasket. Each coupling unit includes a fixed coupling element integrally extended from the pipe fitting body and a movable coupling element, the gasket disposed at the coupling unit, the connecting elements movably connect the fixed coupling element with the movable coupling element, wherein the at least one coupling unit is adapted for being preassembled with the at least one pipe element and can be fastened by at least one fastening element that is capable of being operated to fasten the movable coupling element with the fixed coupling element.

A quick-fitting pipe fitting assembly for coupling with at least one pipe element includes a pipe fitting body, at least one coupling unit, and at least one gasket. Each coupling unit includes a fixed coupling element integrally extended from the pipe fitting body and a movable coupling element, the gasket disposed at the coupling unit, the connecting elements movably connect the fixed coupling element with the movable coupling element, wherein the at least one coupling unit is adapted for being preassembled with the at least one pipe element and can be fastened by at least one fastening element that is capable of being operated to fasten the movable coupling element with the fixed coupling element.

A conduit coupling includes a first connector at a first end of the conduit coupling, a second connector at a second end of the conduit coupling, and a stem between the first connector and the second connector. A first end of the stem is attached to the first connector. A second end of the stem is attached to the second connector. The stem is bent at a particular bend angle along a bend plane. The first connector includes an indicator that indicates an orientation of the bend plane.

A conduit coupling includes a first connector at a first end of the conduit coupling, a second connector at a second end of the conduit coupling, and a stem between the first connector and the second connector. A first end of the stem is attached to the first connector. A second end of the stem is attached to the second connector. The stem is bent at a particular bend angle along a bend plane. The first connector includes an indicator that indicates an orientation of the bend plane.

A downpipe fitting for coupling between top and bottom ends of a downpipe. The downpipe fitting includes two parts connected together and rotatable relative to one another about a longitudinal axis thereof. The first part has an inlet, sized and shaped to couple with an outlet of a first section of the downpipe, above the downpipe fitting. The second part has an outlet which is sized and shaped to couple with an inlet of a second section of the downpipe, below the downpipe fitting. The inlet and outlet of the fitting define a flow path for rainwater therethrough. Rotation of the second section of downpipe below the downpipe fitting, about the longitudinal axis, is decoupled from the first section of downpipe above the downpipe fitting.

A connection device for connecting at least one pipe and a base and topped by a collar comprises a connection end piece for fluidly connecting the pipe to the base and a retaining ring for keeping the connection end piece assembled with the base. The connection end piece comprises a tubular body and at least one first retaining element. The retaining ring comprises an annular body provided with a second retaining element engaging with the first retaining element to retain the retaining ring on the connection end piece. The retaining ring also comprises at least one locking tab integral with the annular body in order to grip the collar and keep the retaining ring assembled with the base.

A joint assembly configured to be connected to a tube and including a first joint, a second joint and an engagement sleeve. The first joint has a channel and an engagement recess. The engagement recess is located in the channel of the first joint. The second joint has a first end, a second end and a channel. The second end is opposite to the first end. The channel of the second joint extends from the first end to the second end. The first end of the second joint is inserted into the tube. The engagement sleeve is sleeved on the tube. The tube is at least partially clamped by the engagement sleeve and the first end of the second joint. The engagement sleeve has an engagement structure located at an end of the engagement sleeve.

A joint assembly configured to be connected to a tube and including a first joint, a second joint and an engagement sleeve. The first joint has a channel and an engagement recess. The engagement recess is located in the channel of the first joint. The second joint has a first end, a second end and a channel. The second end is opposite to the first end. The channel of the second joint extends from the first end to the second end. The first end of the second joint is inserted into the tube. The engagement sleeve is sleeved on the tube. The tube is at least partially clamped by the engagement sleeve and the first end of the second joint. The engagement sleeve has an engagement structure located at an end of the engagement sleeve.

An assembly, connector and process for a quick connector includes a receptacle having first and second interior passages including a chamber in fluid communication between the first and second passages. A flow control insert is installed in the chamber to regulate fluid flow between the first and the second passage.

An elbow fitting for an excavating apparatus can include a curved cylindrical pipe that can include a first metal material. In an example, the fitting can be configured for coupling to a hose. The pipe can include an interior surface and an exterior surface. Optionally, a perimeter of the pipe does not exceed a diameter of a first end of the pipe. The fitting can include a cladding layer (e.g., a second metal material) that can be coupled to the first metal material within the interior surface of the pipe. The cladding layer can include an abrasion-resistant material. The cladding layer can be coupled to the pipe such as with a welding operation. The cladding layer can include one or more ridges. The cladding layer can corregate the interior surface of the fitting and exterior surfaces of the fitting which can come into contact with abrasive material.