A pipe connecting device comprises a connecting body including a first tube having a stop jaw at an end thereof and a second tube coupled to the first tube by a fastener and having an opening for insertion of a pipe, wherein a wedge groove is formed in the connecting body and includes rotary corners having a L-shaped cross section and surrounding a circumference of the pipe, rotary wedges each including a rotary part and an extension part, wherein the rotary part is provided in the wedge groove, has a semicircular cross section, and rotates while in tight contact with the rotary corners, and wherein the extension part is formed integrally with the rotary part, has teeth, and contacts the pipe, an elastic member contacting the rotary wedges to transfer a rotational force to the rotary wedges, and a sealing member embedded in the connecting body.

A gasket for preventing the separation of a pipe joint formed between plastic pipes such as pipes manufactured from PVC. The invention provides a restrained pipe joint including a first pipe including a bell with a spigot entryway and a substantially V-shaped annular groove. The annular groove includes a front radial wall and a rear radial wall and a gasket seated in the annular groove. The gasket includes an inner radial face, an opening defined by the inner radial face and an outer radial face with a front radial section located adjacent to the front radial wall of the annular groove and a rear radial section located adjacent to the rear radial wall of the annular groove. A plurality of restraining segments is at least partially embedded in the gasket.

Disclosed is a sealing member for connecting pipes including a body portion provided between an outer surface of a pipe and an inner surface of a connector into which the pipe is inserted and formed in a ring shape by extending along a circumferential direction; and wing portions formed protruding from the body portion and contacting an area in contact with the outer surface of the pipe to be disposed spacing apart from each other on both sides along the width direction of the body portion, wherein the pipe is deformable by an external force in a state in which the wing portions are formed in line contact with the outer surface of the pipe, respectively.

An apparatus for controlling flow induced vibrations in a section of pipeline caused by a flow of liquid therethrough comprising: a sensor for measuring flow induced vibrations of the section of pipeline; a mechanical means for adjusting the natural frequency of the section of pipeline; wherein the mechanical means automatically adjusts the natural frequency of the section of pipeline based on the measured vibration in order to reduce the flow induced vibration.

A gasket has an annular gasket base extending circumferentially about a gasket axis. A central flange extends inwardly away from the gasket base toward the gasket axis. The central flange has an apex positioned at a first distance from the gasket axis. A first arm is spaced apart from the central flange and extends radially and inwardly away from the gasket base toward the gasket axis. The first arm includes a first sealing portion. The first sealing portion defines a first sealing surface spaced apart from the gasket axis by a second distance which is greater than the first distance. A second arm is spaced apart from the central flange and extends radially and inwardly away from the gasket base toward the gasket axis. The second arm includes a second sealing portion defining a second sealing surface.

A gasket has an annular gasket base extending circumferentially about a gasket axis. A central flange extends inwardly away from the gasket base toward the gasket axis. The central flange has an apex positioned at a first distance from the gasket axis. A first arm is spaced apart from the central flange and extends radially and inwardly away from the gasket base toward the gasket axis. The first arm includes a first sealing portion. The first sealing portion defines a first sealing surface spaced apart from the gasket axis by a second distance which is greater than the first distance. A second arm is spaced apart from the central flange and extends radially and inwardly away from the gasket base toward the gasket axis. The second arm includes a second sealing portion defining a second sealing surface.

The present disclosure relates to an apparatus for connecting to the end of a duct, the apparatus comprising: an outer ring having a central axis (C) and an inner surface extending between a first axial end and a second axial end of the outer ring; and an inner ring positioned within the outer ring and having a central axis (C) and an outer surface extending between a first and second axial end of the inner ring. A gap is provided between the outer surface of the inner ring at its first end and the inner surface of the outer ring at its first end, the gap extending in the direction of the second ends of the inner and outer rings.

The present disclosure relates to an apparatus for connecting to the end of a duct, the apparatus comprising: an outer ring having a central axis (C) and an inner surface extending between a first axial end and a second axial end of the outer ring; and an inner ring positioned within the outer ring and having a central axis (C) and an outer surface extending between a first and second axial end of the inner ring. A gap is provided between the outer surface of the inner ring at its first end and the inner surface of the outer ring at its first end, the gap extending in the direction of the second ends of the inner and outer rings.

A sealing gasket is shown which is used to seal the belled end opening of a female ductile iron pipe to a mating male pipe having an interior surface and an exterior surface. The sealing gasket has an annular gasket body made of a resilient elastomeric material which is bonded to a hard plastic reinforcing band. The annular gasket body is installed within a raceway provided in the mouth region of the female ductile iron pipe so that an outer circumferential region forms a seal with the female pipe mouth region and an inner circumferential region forms a sealing surface for the exterior surface of the mating male pipe. The reinforcing band has a circumferential body which is made of a synthetic polymer which has a greater hardness than the elastomeric material of the remainder of the gasket body.

A pipe sealing gasket is shown which is designed to be received within a raceway provided within the female, belled end of a section of plastic pipe which is assembled with a mating male pipe end to form a plastic pipe joint. The gasket is made up of a hard plastic band having an outer circumferential surface and an inner circumferential surface, and two separated elastomer portions. A first of the separated elastomer portions forms an outer ring which circumscribes the outer circumferential surface of the hard plastic band. The second of the separated elastomer portions forms an inner lip which circumscribes the inner circumferential surface of the hard plastic band. The two separate elastomer portions are connected during the gasket molding operation by a series of spaced ribs which form a continuous body of elastomer connecting the first and second separated elastomer portions at spaced intervals.