A pipe connector or coupling for providing a coupling to a pipe, the pipe coupling comprising: at least one gripper ring which receives a pipe therewithin, wherein the at least one gripper ring comprises a gripper which includes a plurality of blade elements which are displaceable between a first, pipe-receiving configuration in which the pipe is receivable within the at least one gripper ring and a second, inwardly-displaced inserted configuration in which the blade elements are inserted into an external wall of the pipe; and a clamp for applying a radially-inward compressive load on the at least one gripper ring to displace the blade elements thereof from the pipe-receiving configuration to the inserted configuration.

Disclosed are systems and methods for manufacturing compression collars for reinforcing sealed connections between a length of piping and a plumbing fitting. Specifically, compression collars and related methods of making include extruding a hollow tube having one or more ridges which are then partially removed or trimmed to provide positioning tabs on one end of the compression collar. The compression collars can be cut to the desired length from the extruded hollow tube. In this way, compression collars with features for enhancing the strength and reliability of an interference fit, as well as their ease of use, can be manufactured rapidly with little material waste through modifications to the extrusion process.

A pipe coupling for connecting together the ends of two pipes including a tubular casing for fitting around a pipe; tensioning means for tightening the casing around the outer surface of the pipe; and a dynamic axial restraint system comprising at least one resilient gripping ring mounted within the casing for gripping the outer surface of the pipe. The gripping ring includes an outer surface engaging with an inner surface of the casing and adapted to roll against the inner surface of the casing upon axial loading of the pipe; and an inner gripping surface for engaging the outer surface of the pipe. The gripping surface of the resilient gripping ring is adapted such that upon rolling of the outer surface against the inner surface of the tubular casing, the area of the gripping surface in contact with the pipe increases.

A pipe coupling for connecting together the ends of two pipes including a tubular casing for fitting around a pipe; tensioning means for tightening the casing around the outer surface of the pipe; and a dynamic axial restraint system comprising at least one resilient gripping ring mounted within the casing for gripping the outer surface of the pipe. The gripping ring includes an outer surface engaging with an inner surface of the casing and adapted to roll against the inner surface of the casing upon axial loading of the pipe; and an inner gripping surface for engaging the outer surface of the pipe. The gripping surface of the resilient gripping ring is adapted such that upon rolling of the outer surface against the inner surface of the tubular casing, the area of the gripping surface in contact with the pipe increases.

A pipe coupling and a method of use are disclosed. The pipe coupling including an elongated housing including a first end and a second end, a stop located on an inner diameter of the housing, the stop located between the first end and the second ends of the housing, wherein a distance from the stop to one of the first and second ends is at least two times a distance from the stop to the other of the first and second end of the housing, and at least one marking on an outer surface of the housing adjacent to the first end of the elongated housing, the at least one marking extending towards the second end for a predetermined length.

A method for joining two pipe sections of laminate structure and having an inner liner, comprising the steps of: (a) connecting a first pipe section to a first connection member to form a first assembly; (b) disposing the first assembly within a sleeve with a space disposed between an outer surface of the first pipe section and an inner surface of the sleeve; (c) optionally connecting the sleeve to the first assembly; (d) providing a second pipe section with a second connection member joinable with the first connection member; (e) moving the second pipe section and the first assembly towards each other; and (f) connecting the second pipe section to the first assembly through joining the second connection member to the first connection member to form a joint, the inner liner of both the first and second pipe sections being locked within the joint.

A method for joining two pipe sections of laminate structure and having an inner liner, comprising the steps of: (a) connecting a first pipe section to a first connection member to form a first assembly; (b) disposing the first assembly within a sleeve with a space disposed between an outer surface of the first pipe section and an inner surface of the sleeve; (c) optionally connecting the sleeve to the first assembly; (d) providing a second pipe section with a second connection member joinable with the first connection member; (e) moving the second pipe section and the first assembly towards each other; and (f) connecting the second pipe section to the first assembly through joining the second connection member to the first connection member to form a joint, the inner liner of both the first and second pipe sections being locked within the joint.

A polymer pipe has a length between a first end and a second end. The length and the first end have a first diameter and the second end is a belled end having a second diameter larger than the first diameter. An insert device is received within the second end and has an annular body and a spline groove formed in the annular body and facing radially inward. The insert device is pre-installed in the belled end during the belling process.

A polymer pipe has a length between a first end and a second end. The length and the first end have a first diameter and the second end is a belled end having a second diameter larger than the first diameter. An insert device is received within the second end and has an annular body and a spline groove formed in the annular body and facing radially inward. The insert device is pre-installed in the belled end during the belling process.

A pipe fitting having a first body and a second body that together at least partially define a fluid flow passage. The first body defines a first portion of the fluid flow passage that extends from a first end of the fluid flow passage to a first internal opening. The second body defines a second portion of the fluid flow passage that extends from a second internal opening to a second end of the fluid flow passage. The first body has a first interface surface that surrounds the first internal opening, the first interface surface having a plurality of anti-rotation grooves. The second body has a second interface surface that surrounds the second internal opening and engages with the first interface surface. The first internal opening is in fluid communication with the second internal opening. The second interface surface has a plurality of anti-rotation fingers that are each received by and engage with a corresponding one of the anti-rotation grooves. Rotation of the second body relative to the first body is resisted by the engagement of the anti-rotation fingers with the anti-rotation grooves.