A vapor barrier and method for applying same around an insulated pipe structure is disclosed. The vapor barrier a vapor retarder layer, an adhesive layer disposed on one side of the vapor retarder layer, and a release layer covering the adhesive layer. The vapor barrier has a two-dimensional geometric profile which corresponds to a three-dimensional structure of a specific pipe joint. Applying the vapor barrier comprises removing first and second portions of the release layer to expose respective portions of the adhesive layer, adhering the respective portions of release layer to corresponding areas of the pipe joint, forming an overlap seal in which a portion of the vapor barrier is adhered to itself via a portion of the adhesive layer, and forming an edge seal in which a portion of the prefabricated vapor barrier is adhered to a portion of adjacent insulation structure via a portion of the adhesive layer.

According to one embodiment a plug-in connector is provided that includes a female connector and a male connector. The female connector includes a head configured for being connected to the male connector and a body fixed to the head which is configured for being attached to a pipe/hose. A contact area including a line of contact communicated with the inside of the female connector is defined between the head and the body. The plug-in connector also includes a sealing gasket configured for assuring leak-tightness between the female connector and the male connector, the line of contact being arranged in a previous axial position with respect to at least part of the sealing gasket in the direction of insertion of the male connector into the female connector, such that the sealing gasket itself also assures the leak-tightness in the line of contact.

A coupling may be configured to receive and secure an insertion end of a conduit. An outer surface of the insertion end of the conduit may be smooth and free of grooves, flanges and beads. A first member of the coupling may define a first passageway. A second member of the coupling may define a second passageway. The first member may be in spin weld engagement with the second member. A gripping ring having an inner edge defining a series of teeth may be disposed within the second member. A support ring and O-ring may also be disposed within the second member.

Induction Weldable Pipe Connectors (IWPCs) (400) for electromagnetic induction welding with at least one plastic pipe (30). IWPCs (400) include a tubular induction weldable mounting (401) having an opposite pair of induction weldable sockets (404A, 404B), a tubular cover (406) externally mounted on the induction weldable mounting (401), and a tubular pipe tang (407) internally disposed in one induction weldable socket (404A, 404B) for destining an induction weldable socket (404A, 404B) as an induction weldable pipe socket (408A, 408B) for forced sliding insertion of a pipe end (31) thereinto. The cover (406) includes an opposite pair of thermally insulated induction weldable socket mouth rims (426A, 426B) for entrapping melted solder lining (412) inside the induction weldable mounting (401) during an electromagnetic induction welding operation, thereby ensuring improved welding.

Induction Weldable Pipe Connectors (IWPCs) (400) for electromagnetic induction welding with at least one plastic pipe (30). IWPCs (400) include a tubular induction weldable mounting (401) having an opposite pair of induction weldable sockets (404A, 404B), a tubular cover (406) externally mounted on the induction weldable mounting (401), and a tubular pipe tang (407) internally disposed in one induction weldable socket (404A, 404B) for destining an induction weldable socket (404A, 404B) as an induction weldable pipe socket (408A, 408B) for forced sliding insertion of a pipe end (31) thereinto. The cover (406) includes an opposite pair of thermally insulated induction weldable socket mouth rims (426A, 426B) for entrapping melted solder lining (412) inside the induction weldable mounting (401) during an electromagnetic induction welding operation, thereby ensuring improved welding.

A coupling component having a first end and a second end, said fitting having a longitudinal axis between the first end and the second end, the first end of the component comprising a first tubular portion having a first internal diameter adapted to form a sliding fit with a first pipe section, and a first sealing means adapted such that the first end can be sealed in use to the first pipe section; the second end having a second diameter or cross-sectional area which is larger than the first diameter and wherein the second end incorporates a flange, wherein at least part of the face of said flange is in a plane substantially non-perpendicular to, or offset from, the longitudinal axis of the component.

The connector (200) can join an end of a first flexible thermoplastic tube segment (202) to an end of at least a second flexible thermoplastic tube segment (202). The connector (200) is made of a thermoplastic material allowing, through heat fusion, to join the inner surface (244) of the receptacles (240, 260) of the connector (200) to the outer surface (206) of the corresponding tube segments (202), and this, without creating a gap or an irregularity inside the portion of the liquid circuit. The heat fusion can result in airtight and robust joints made with a high precision and that are uniform, even if they can be made under difficult conditions. The proposed concept can be particularly useful in sugar making.

A pipe elbow has a first end and a second end off parallel to the first end. An interior surface of the pipe elbow has a centerline having an arcuate portion. A circular cylindrical exterior surface portion of the pipe elbow surrounds the arcuate portion of the centerline.

A fitting for use in fusion welding mating thermoplastic components includes a weld bead chamber to capture and conceal a bead formed as a result of the fusion weld. The weld bead chamber integrates the bead into the fitting so that the joined parts have a finished look without mechanical polishing or grinding of the completed piece. A stop ledge included in the weld bead chamber prevents over insertion of a pipe or other component into the fitting. A view window in the fitting permits inspection of the finished bead.

Disclosed embodiments provide an electrofusion pipe coupler with mechanical support. The electrofusion pipe coupler comprises a coupler housing. A wire is configured and disposed within the housing. Electrodes are affixed to the coupler housing and in electrical contact with the wire. A threaded pattern is formed in an outer surface of the coupler housing. Gripping wedges are affixed to the coupler housing. Each gripping wedge extends from the coupler housing. A nut is attached to the coupler housing, engaging with the threaded pattern, and compressing the wedges against the connecting pipes. This serves to provide axial load transfer from the connecting pipes to the coupler housing via the wedges, thereby providing improved mechanical stability for such pipe assemblies.