Compression fittings for pipes having a range of diameters, including a support body with a central section between end sections, the central section having a smaller diameter than the end sections, with a transition surface between the central section and each end section. A gasket fits over a pipe and engages one of the support body end section end surfaces. A fitting nut is movable axially over the support body to draw the support body and the gasket together in the axial direction and bias the gasket radially inward against the pipe. A grip ring encircles the pipe at one gasket end and has a surface engaging the fitting nut whereby the fitting nut biases the grip ring radially inwardly toward the pipe. An insert adapter has a hub with a radially extending flange may block the other gasket end to load the gasket between its axial ends.

A pipe restraining system has first and second pipes. Each pipe has an axis and a groove adjacent an axial end thereof. A bushing bridges and hydraulically seals with the first and second pipes. First and second clamp rings removably attach the bushing to a respective one of the first and second pipes. When the pipe restraining system is assembled, axial tensile loads passing through the first pipe are transmitted through the first clamp ring, the bushing, and the second clamp ring to the second pipe. An axial distance between the first and second pipes remains substantially constant.

The present invention discloses a quick connector stable for connection and convenient for mounting and dismounting, which includes a joint pipe that is provided with a first insertion cavity and a second insertion cavity in a center with different diameters for inserting a pipe or a rod, wherein a seal cavity is respectively provided outside the first insertion cavity and the second insertion cavity, a seal ring is mounted on a bottom of the seal cavity, a gland is mounted on an upper end of the seal ring, the joint pipe is detachably connected to a screw cap, a clamping chuck is provided in the screw cap, and a locking piece is mounted between the clamping chuck and the gland.

A method for connecting tubes includes fastening a position locator to an outer surface of a tube at a predetermined depth from a first end of a tube such that at least one ferrule abuts a flange of the position locator between the first end of the tube and the position locator. A tube connector assembly is formed by introducing a compression nut such that an inner wall of the compression nut surrounds the position locator and the at least one ferrule. A fitting body is introduced via the first end of the tube. The tube connector assembly is fastened to the fitting body using a first threading on the inner wall of the compression nut and a second threading on an outer wall of the fitting body such that the at least one ferrule is between the compression nut and the fitting body.

A pipe restraining system has first and second pipes. Each pipe has an axis and a groove adjacent an axial end thereof. A bushing bridges and hydraulically seals with the first and second pipes. First and second clamp rings are removably attach the bushing to a respective one of the first and second pipes. When the pipe restraining system is assembled, axial tensile loads passing through the first pipe are transmitted through the first clamp ring, the bushing and the second clamp ring to the second pipe. An axial distance between the first and second pipes remains substantially constant.

A fitting element is configured for coupling tubing to a fluidic device having a receiving cavity configured for receiving the fitting element, where the tubing has an inner contact surface of a biocompatible material, the inner contact surface being configured to contact a fluid to be conducted by the tubing, and the receiving cavity having a receiving contact surface of a bio-compatible material. The fitting element includes a first sealing element of a bio-compatible material configured for sealing to the bio-compatible material of the inner contact surface of the tubing, and a second sealing element configured for sealing against a pressure ambient to a pressure of the fluid in the tubing. Upon coupling of the tubing to the fluidic device, at least a portion of the receiving contact surface, the first sealing element, and the second sealing element enclose an interspace, each surface of the interspace being a bio-compatible material.

Compression fittings for pipes having a range of diameters, including a support body with a central section between end sections, the central section having a smaller diameter than the end sections, with a transition surface between the central section and each end section. A gasket fits over a pipe and engages one of the support body end section end surfaces. A fitting nut is movable axially over the support body to draw the support body and the gasket together in the axial direction and bias the gasket radially inward against the pipe. A grip ring encircles the pipe at one gasket end and has a surface engaging the fitting nut whereby the fitting nut biases the grip ring radially inwardly toward the pipe. An insert adapter has a hub with a radially extending flange may block the other gasket end to load the gasket between its axial ends.

A fitting includes a first threaded fitting component, a second threaded fitting component that threadably joins with the first fitting component to produce relative axial stroke between the first and second fitting components, and a conduit gripping device receivable between the first and second fitting component. When the fitting is pulled-up on a conduit, a radially outward facing tapered first annular surface of the first fitting component axially engages a radially inward facing tapered second annular surface of the second fitting component. At least one of the first and second annular surfaces includes a recess extending from an inner diameter to an outer diameter of the corresponding annular surface, the recess defining a leak detection port in fluid communication with the fitting interior volume when the first annular surface is in axial engagement with the second annular surface.

Embodiments of a swage connector device and assembly include one or more of a sealing ring, a fastening ring spreader, a retainer grip ring, a cap member and a fastener push ring. The fastener push ring moves axially and engages the fastening ring spreader in order to securely maintain a piping element held within the fitting.

An assembly for connecting tubes includes a tube connector assembly and an assembly guide for positioning the position locator of the tube connector assembly. The tube connector assembly includes a position locator having a hollow cylindrical shape and configured to be fastened to an outer surface of a tube at a predetermined depth from a first end of the tube, at least one ferrule to be coaxially positioned against a first side of the position locator, and a compression nut to be coaxially positioned against a second side of the position locator opposite to the first side of the position locator. When the assembly guide is engaged with the tube connector assembly and a tube is inserted into a cavity of the compression nut, the length from the first end of the tube to the position locator is equivalent to the predetermined depth.