Abstract: A fitting, particularly for connecting two pipes, comprising: a support sleeve (1), having a first connection segment (11a) at a first end, and having a second connection segment at an opposite second end, wherein at least the first connection segment (11a) is formed so that a pipe segment (70) can be pushed onto it and having a middle segment (12) disposed between the first and the second connection segment (11a, 11b), wherein the middle segment (12) comprises a fixing element (32, 34) extending at least partially around the support sleeve and having a separable ring element (20) having an inner diameter substantially corresponding to an outer diameter of the middle segment (12) and designed for being placed on the support sleeve (1) and being retained by the fixing element (32, 34) in the middle segment (12) in a fixed position.

Abstract: The invention relates to a fitting for a pipe, particularly a plastic pipe or plastic-metal composite pipe, having a base body (12) having a passage (14) for a fluid, a connecting body (16), also comprising a passage (17) for a fluid and that can be releaseably connected to the base body (12), to which a pipe can be connected. Both bodies (12, 16) comprise contact surfaces (26, 28) that can be slid into each other, comprising at least one pair of opposing recesses (30, 32) forming a receiving chamber (34). The fitting further has a flexible and substantially incompressible locking element (44) that can be inserted into the receiving chamber (34) for fixing the two bodies (12, 16) to each other. At least one of the two bodies (12, 16) comprises an access chamber (36, 38) extending between an outer surface (40) of the associated body (12) and the receiving chamber (34). The access chamber (36, 38) connects to the receiving chamber (34) substantially as an extension thereof.

Abstract: The invention relates to a pipe arrangement (10) for temperature control of a building, having a single feed pipe (12) and a single return pipe (20), that can be used for operating a concrete core activation during the night and for providing additional cooling power for peak load operation during the day. First and second temperature control circuits (26, 28) branch off from said pipes in a known manner. The direction of flow within the feed end segment (16) of the feed pipe (12) and the return end segment (24) of the return pipe (20) can be reversed by means of a changeover valve (42). Said end segments thus take on a feed or a return function, depending on the flow direction. Check valves (38, 40) within the feed and return end segments (16, 24) ensure that the temperature control medium exiting the currently activated temperature control circuit (26 or 28) does not flow into the corresponding non-activated temperature control circuit (28 or 26).

Abstract: A network device configured to allows the connection of the network device to a network in a daisy chain configuration using a single cable. The network device is connected to a cable with two conductors by a socket that is adapted to receive a plug connected to the end of the cable. When the plug on the end of a cable is inserted into the socket, a first conductor in the cable is connected to an input port of a network component and a second conductor of the cable is connected to an output port of a network component. A signal from the network is transmitted down a first conductor in a cable to a network device and the signal is then transmitted back from the network device down a second conductor in the same cable.

Abstract: Controlling under surface heating/cooling by supplying liquid to at least two supply loops in an under surface heating/cooling system, and controlling the flow of the liquid on and off such that during the duty cycle the flow is high and between the duty cycles the flow is off. Room temperature is controlled by controlling the percentage of the duty cycles, which percentage is determined on the basis of the heating demand of the rooms. Different loops are controlled such that at least in two different loops the duty cycles start at different moments.

Abstract: A plastic pipe is made of a cross-linked polyolefin to be utilized in, but not limited to, potable water applications. Certain antioxidants and stabilizers are added to a process for producing the plastic pipe. The added antioxidants and stabilizers remain as key components in the final plastic pipes, providing superior long term stability and resistance to oxidative degradation, the latter being caused by but not limited to, chlorinated water environments. At least a primary stabilizer is used in the material.

Abstract: A pipe end is expanded with the aid of an expander tool (1). The expander tool (1) comprises a plurality of jaws (10) that are radially movable between a retracted and an expanded position. The jaws (10) have outer jaw surfaces which are intended for engagement with the inner surface of the pipe end and which lie adjacent to one another in the retracted position of the jaws (10) and have an at least generally circular arcuate shape in cross-section. The expander tool (1) further comprises a piston (2) or cone with a tapered end for moving the jaws (10) between the retracted and the outer expanded positions and the piston (2) is moved in a reciprocating manner in the axial direction before expanding the pipe end gradually in the stages. The axial reciprocating movement of the piston (2) is guided to rotate the jaws (10) to a certain extent in a circumferential direction after each expansion stage.

Abstract: The press fitting for a pipe, in particular plastic pipe or plastic-metal composite pipe, is provided with a fitting body (12) which has a supporting sleeve (14) with a free end (16) and a pressing sleeve (18). The pressing sleeve (18) is held substantially concentrically with respect to the supporting sleeve (14) by means of at least one spacer element (42) arranged at the holding end (35) of said pressing sleeve. In the region of the holding end (35) of the pressing sleeve (18), the fitting body (12) has a locking depression (30) or a locking projection. At the holding end (35), the cylindrical wall (34) of the pressing sleeve (18) has at least one opening (32) through which a locking element (20) extends to the axial fitting of the pressing sleeve (18) to the fitting body (12), wherein the locking element (20) projects into the locking depression (30) of the fitting body (12) and ends in said depression, or the locking element (20) engages around or behind the locking projection of the fitting body (12).

Abstract: A pipe from a plastic material having memory properties is extruded. The extruded pipe is cut to form a pipe part (7). The pipe part (7) is warmed and the end (6b) of the pipe part (7) is bent. The pipe part (7) forms a clamping ring (6) and the bent end (6b) of the pipe part (7) forms a stop edge (10) in the clamping ring (6).

Abstract: A swivel joint comprises a pipe part and a swivel nut (2). The pipe part has a first end (4a) and a second end (4b) and the swivel nut (2) has a first end (11a) and a second end (11b). The swivel nut (2) is positioned on the pipe part such that the first end (11a) of the swivel nut (2) forms a swivel connection with the first end (4a) of the pipe part. The swivel nut (2) and the pipe part comprise shoulders (10, 17) against each other for preventing separation of the swivel nut (2) from the pipe part. The swivel nut (2) is made such that the swivel nut (2) and the pipe part are connected together by pushing the first end (11a) of the swivel nut (2) towards the first end (4a) of the pipe part whereby the swivel nut (2) and the pipe part are connected by a snap joint.

Abstract: The clamp fitting (10) for a pipe, in particular, a plastic pipe or a plastic-metal composite pipe, is provided with a fitting body (12) having a support sleeve (14) onto which one end (16) of a pipe (18) to be connected can be pushed. Clamp fitting (10) further comprises a clamping sleeve (20) having a wall that has a slot (22) running between its axial ends that is delimited by opposing flanks (28, 30) of the wall and is expandable, wherein clamping sleeve (20) surrounds support sleeve (14) and end (16) of the pipe (18) to be connected in the state when it has been pushed onto the support sleeve. To maintain the expanded state of clamping sleeve (20), a removable spacer, against which flanks (28, 30) of the wall that delimit slot (22) of the expanded clamping sleeve (20) are supported, is arranged in slot (22).

Abstract: A pipe coupling for connection to a pipe end of pipe made of polymer material includes an inner sleeve which is intended for insertion into the pipe end and for abutment with the inner surface of the pipe end, and an outer sleeve which is intended for abutment with the outer surface of the pipe end and which includes a slot-like opening. The pipe coupling also includes a device for adjusting the opening, and a pre-widening device positioned between the edges of the slot-like opening. The pre-widening device makes the slot-like opening larger such that the inner diameter of the outer sleeve is larger than the outer diameter of the pipe.

Abstract: A piping element (1) comprises at least one flow pipe (4), an insulator (3) arranged outside it and a corrugated outer sheath (2) arranged outside the insulator (3) in such a way that the piping element (1) is bendable in its entirety. The outer diameter of the insulator (3) is reduced before conducting it to a corrugator (13) inside the outer sheath (2). In the corrugator (13), the insulator (3) reverts towards its larger outer diameter. The free outer diameter of the insulator layer is formed larger than the smallest inner diameter of the outer sheath (2).

Abstract: A first element is connected to a first end of a connecting piece and a second element is connected to a second end of the connecting piece. At least one end of the connecting piece is provided with a thread, whereby the connecting piece is connectable to a pipe or fitting with a threaded connection. The connecting piece is made of plastic in such a way that a metal insert provided with a thread is arranged at at least one end of the plastic body of the connecting piece, or the connecting piece is made substantially completely of thermoplast in such a way that the thermoplastic body is provided with a thread. The outer surface of the connecting piece is provided with a gripping member. The gripping member is formed and dimensioned such that it gives way earlier than the connecting member thread and/or basic structure.

Abstract: A valve comprises a housing and at least three ceramic discs in the housing such that at least two fixed ceramic discs are provided and at least one rotatable ceramic disc is provided between the fixed ceramic discs. The ceramic discs comprise through holes such that when the holes are aligned, the valve is open, and turning the rotatable ceramic disc turns the holes to be misaligned in successive ceramic discs, which prevents water flow through the valve. The valve further comprises a handle for rotating a rotatable ceramic disc and the handle comprises a stem extending through the housing, and a curved part, the curved part curving at least partly around the housing along the circumference of the housing.

Abstract: A manifold (1) comprises a body (2) with a plurality of branch fittings (3) diverging therefrom. The inner surface of the body (2) is conical such that the inner cross-sectional area of the body (2) decreases in the direction of flow. The manifold (1) is particularly well suited for use in tap water systems. The manifold (1) can be manufactured e.g. from polyphenyl sulfone PPSU, polysulphone PSU, polyvinylidene fluoride PVDF, glass fiber reinforced polyamide PA, or cross-linked polyolefin plastic.

Abstract: Compositions and methods for producing multi-layered plastic pipes are described. Some embodiments of the compositions comprise a cross-linkable polymer system (for example, based on either acrylate or epoxy chemistry), a photoinitiator, and one or more additives such as a pigment, an antioxidant, a light stabilizer, or other additive. In an exemplary method of producing a multi-layered plastic pipe, a base pipe, for example comprising cross-linked polyethylene, is conveyed through an oxidizing step in which at least the outer surface of the base pipe is oxidized, through a coating step in which a pre-polymer system is applied to the outer surface of the base pipe and through a curing step in which the pre-polymer is cured to form a layer of the pipe.

Abstract: A first element is connected to a first end of a connecting piece and a second element is connected to a second end of the connecting piece. At least one end of the connecting piece is provided with a thread, whereby the connecting piece is connectable to a pipe or fitting with a threaded connection. The connecting piece is made of plastic in such a way that a metal insert provided with a thread is arranged at at least one end of the plastic body of the connecting piece, or the connecting piece is made substantially completely of thermoplast in such a way that the thermoplastic body is provided with a thread. The outer surface of the connecting piece is provided with a gripping member. The gripping member is formed and dimensioned such that it gives way earlier than the connecting member thread and/or basic structure.

Abstract: A pipe fitting is made of plastic, such as polysulphone PSU or polyphenylsulphone PPSU. At least one end of the pipe fitting (1) comprises an external thread (2) for connecting the pipe fitting (1) to a mounting element, such as a pipe or a mounting piece, e.g. a tap. The thread (2) comprises a ridge (3). Between the ridges (3) there is a continuous helical groove (4). On the bottom of the groove (4) between the ridges (3) of the thread (2) there are protrusions (5).

Abstract: The invention relates to a method for producing a strand-shaped part, wherein a hollow section (16) of metal is extruded, the extruded metal hollow section (16) cools and/or is cooled, and a plastic strand (28) having one or more layers is extruded into the extruded metal hollow section (16) after or during cooling. The plastic strand (28) passes by a dispensing tool (24), exposed to the heat of the extruded metal hollow section (16) of an extruder (34). The dispensing tool is inserted into the metal hollow section (16) and comprises a dispensing outlet (26), which is disposed inside a region of the metal hollow section (16) in which the dispensing tool is cooled in relation to the temperature thereof during extrusion.