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.

One fusion machine can butt or socket fuse polyolefin pipes and fittings in straight alignment or at inwardly or outwardly mitered universal angles from 0 to 45 for butt fusion and from 0 to 10 for socket fusion. The machine is manually driven, hydraulically monitored and operated in all configurations from one side of the machine.

Pipe fittings, systems, and methods are discussed including-pipe fittings with pairs of circumferential sealing zones and a pressure-testing chamber between the sealing zones. In addition, pipe fittings with sensors for detecting a breach in one or more sealing zones, data trackers for collecting information about the pressure-testing chamber and/or breaches in the sealing zones and a dormant power source that becomes powered upon an aqueous breach of one or more sealing zones are discussed.

The invention relates to a method of welding and assembling a component, where two or more parts of pre-insulated pipes (1) are welded together to form components of two or three parts. The pre-insulated pipes (1) consist of an outer casing (2), an inner casing (3) and an intermediate insulation (4). The outer casing (3) during the process is beveled, the insulation (4) is cleared and thermal welding is carried out with the corresponding part of another pipe. After the resulting component has cooled, the gap between the outer casings (2) thereof is filled with polymer resin.

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.

Fluid flow conduits and apparatus and methods for joining the conduits, preferably in a sterile manner, are disclosed. Each conduit has a polymeric open end that is sealed by a sealing member that may include a heating element. The polymeric end material is melted, the sealing members are moved to expose the melted open ends of the conduits and the ends are brought together to form a fused or welded connection between the conduits.

A method of manufacturing a Coriolis mass flowmeter from a polymeric material is described, in which a dynamically responsive manifold is fabricated from the same material as the flow sensor's flow-sensitive elements. The flowmeter is free of mechanical joints and adhesives. The manifold and flow-sensitive elements therefore do not slip or change their location relative one another, nor are they subject to differing degrees of thermal expansion that would otherwise undermine integrity, reliability, and/or accuracy of the boundary condition at the ends of the vibrating flow-sensitive elements.

One fusion machine can butt or socket fuse polyolefin pipes and fittings in straight alignment or at inwardly or outwardly mitered universal angles from 0? to 45? for butt fusion and from 0? to 10? for socket fusion. The machine is manually driven, hydraulically monitored and operated in all configurations from one side of the machine.

The invention relates to a method for producing a plug-in connector, and to a plug-in connector comprising a first tubular component and a second tubular component, and also a first connection geometry and a second connection geometry. A method for producing a plug-in connector is to be made available that permits an easier modification of the relative angle between the longitudinal axes of the two components in the finished plug-in connector. To this end, the two connection geometries are arranged in a connection plane inclined with respect to the longitudinal axes, such that the relative angle between the longitudinal axes can be modified by rotating the components. After a relative angle has been selected, the two connection geometries are connected by integral bonding.

Method for forming a sealing element from extruded thermoplastic rods includes the steps of machining one or more extruded thermoplastic rods, each having a first and a second end, in a desired shape; bending the one or more machined thermoplastic rods into a circular structure at ambient temperature while keeping the stress in the one or more thermoplastic rods below the yield point; joining the first and second end faces of the thermoplastic rods to form the sealing element. A method for replacing and repairing a sealing element of a swivel is also described.