Abstract: An electroweldable branch fitting for high diameter pipes comprises at least a first collar (20, 20?) provided with a predetermined radius of curvature (R), wherein the collar (20, 20?) identifies on opposite sides a concave surface (21) and a convex surface (22), further comprising at least one first electrical wire winding (23) associated with the concave surface (21) of the collar (20, 20?) and carrying one first pair of electrical terminals (24), arranged on the convex surface (22) of the collar (20, 20?) for applying an electric current adapted to cause the electrofusion of the collar (20, 20?), wherein the concave surface (21) of the collar (20, 20?) is continuous, i.e.

Abstract: An assembly including a double wall PE sump and an electro-weldable penetration fitting, wherein the sump is provided with two walls identifying an interspace therebetween and wherein at least an electro-weldable penetration fitting is applied to the sump at at least a circular opening prepared for the passage through the two walls by a conduit. The penetration fitting includes a cylindrical sleeve internally defining a tubular passage and provided with a threaded portion on the outer surface of a first end, with a cylindrical portion on the opposite end, and centrally with a stop shoulder, as well as with a welding zone, having a heat transfer component, provided between the threaded portion and the stop shoulder. The penetration fitting also includes a locking ring at least provided with a smooth cylindrical portion that can be coupled with the welding zone of the cylindrical sleeve provided with the heat transfer component.

Abstract: A connecting assembly for hydraulic-sanitary utilities, the connecting assembly including a first chamber for hot water and a second chamber for cold water, mutually isolated, both the first chamber and the second chamber having an inlet and an outlet placed on one same connection plane, on the first chamber a single top fitting being provided, with an axis substantially perpendicular with respect to the connection plane, for the connection to a hydraulic-sanitary utility, and on the second chamber a single top fitting being provided, with an axis substantially perpendicular with respect to the connection plane, for the connection to a hydraulic-sanitary utility.

Abstract: An electroweldable branch fitting for high diameter pipes comprises at least a first collar (20, 20?) provided with a predetermined radius of curvature (R), wherein the collar (20, 20?) identifies on opposite sides a concave surface (21) and a convex surface (22), further comprising at least one first electrical wire winding (23) associated with the concave surface (21) of the collar (20, 20?) and carrying one first pair of electrical terminals (24), arranged on the convex surface (22) of the collar (20, 20?) for applying an electric current adapted to cause the electrofusion of the collar (20, 20?), wherein the concave surface (21) of the collar (20, 20?) is continuous, i.e.

Abstract: An electroweldable saddle-type fitting having a saddle-type wall that defines on opposite sides a convex surface and a concave surface is provided. The wall has a predetermined curvature radius able to be coupled with the curvature radius of the heat-sealable pipe section, and is associated with a first electric wire winding, associated with the convex side and bearing a first pair of electric terminals arranged on the concave side for the application of an electric current for heat fusion of the saddle-type wall. The fitting also has a cylindrical sleeve made of heat-fusible material, provided with a further electric wire winding bearing a further pair of electric terminals for the application of an electric current, and are arranged on the concave side of the wall. The further electric wire winding is arranged on the inner surface of the cylindrical sleeve to apply an electric current for heat fusion of the cylindrical sleeve on a heat-sealable by-pass pipe.

Abstract: A multilayer tube for fluid transportation may include, from an interior of the multilayer tube to an exterior of the multilayer tube: an inner layer including at least one polyamide in admixture with at least one elastomer; an adhesive layer; and/or a layer including at least one polyolefin. In a system for transporting fluids at medium pressure, a plurality of multilayer tubes may be joined together by electro-soldered joints formed by the at least one polyamide. A multilayer tube may be used for transporting hydrocarbons within an extraction site, from the extraction site to a refinery, or within the extraction site and from the extraction site to the refinery. A multilayer tube may be used for transporting water, distributing the water, or transporting and distributing the water.

Abstract: A penetration fitting unit for seal-connection between a wall and a pipe passing through a wall opening. The unit has a cylindrical sleeve having inlet and outlet ends which internally define a tubular passage. Between the inlet and outlet ends there is at least one limit stop element protruding outwardly from the outer surface of the cylindrical sleeve having a locking ring that can be coupled with the cylindrical sleeve at the outlet end thereby forming a seat for the wall. A heat transfer apparatus is interposed between the limit stop element and the sleeve outlet end. The heat transfer apparatus is placed at a portion of the cylindrical sleeve's outer surface and has a first area at least partially overlapping with respect to the seat for the wall and a second area overlapping with a portion of internal surface of the locking ring.

Abstract: Disclosed is a penetration fitting unit for seal-connection between a wall and a pipe passing through a wall opening. The unit has a cylindrical sleeve having inlet and outlet ends which internally define a tubular passage. Between the inlet and outlet ends there is at least one limit stop element protruding outwardly from the outer surface of the cylindrical sleeve having a locking ring that can be coupled with the cylindrical sleeve at the outlet end thereby forming a seat for the wall. A heat transfer means is interposed between the limit stop element and the sleeve outlet end. The heat transfer means is placed at a portion of the cylindrical sleeve's outer surface and has a first area at least partially overlapping with respect to the seat for the wall and a second area overlapping with a portion of internal surface of the locking ring.

Abstract: A method according to the invention, comprising the steps of producing a first band of material made of meltable plastics with incorporated heating conductors, winding the band on the pipe to cover the pipe zone to be repaired or joined, supplying the conductors electrically until desired melting of the material of the band melts is caused on the wound zone to create a cover block covering that zone. An assembly for implementing the method is also proposed.

Abstract: A plastic well comprises a box-shaped base part from which projects upward a vertical access duct. The base part and the access duct are made of separate parts and are connected together by means of a connector item constituting a cover of the base part and having a central hole to which is connected the lower end of the access duct. The connector item and the base part have mutually facing surfaces between which there is a first welding bead for induction melting allowing rapid jointing in place of the connector item onto the base part. Advantageously the connector item is also in a piece separate from the access duct, connector item and access duct having mutually facing surfaces between which there is a second welding bead for welding by induction melting allowing fast jointing in place of the access duct on the connector item.

Abstract: A heat-sealable sleeve for protection and strengthening of head-to-head joints of a pipe of plastic material is made up of two mutually connectable halves for wrapping a pipe. The halves have on the internal face in an intermediate position between the ends of a circumferential groove designed to receive the head-to-head joint of the pipe on which the sleeve is installed. Each half has two longitudinal flanges projecting radially for coupling with and fastening to corresponding flanges of the other half. The union comprises on the internal face zones for electrical thermofusion for adhesion to the pipe connected to outward-facing terminals for their electrical power supply. Advantageously, the flanges also have mutual thermoadhesion zones by means of electrical power supply through terminals.

Abstract: A union for tubes having a first external wall and a second internal wall coaxial with the first to define a chamber around a central duct. The union includes at least two seats for reception each of one end of a tube to be connected. Each seat includes a first surface designed to adhere to an end segment of the first wall of a tube inserted in the seat and a second surface coaxial with the first and designed to adhere to an end segment of the second wall of the tube. Between the first and second surfaces of the union there is a connection surface. The union includes in it first ducts which lead into the connection surfaces to provide connection between the chambers of tubes inserted in the seats and second ducts which lead into spaces circumscribed by the second surfaces to provide connection between the central ducts of the tubes.