Abstract: A metallic flange connection gasket to be used for sealing between flanges on pipes or between attractable pipe flange and flange of an operational unit, e.g. pump or valve, the gasket exhibiting at least a pair of circling first ridges, the ridges thereof protruding from opposite faces of the gasket, right opposite to each other, and at least one first valley being adjacent a respective one of the first ridges and recessed in a respective face of the gasket. The gasket has mutually unitary portions consisting of a radially outer portion having a first thickness, a first, radially inner portion radially inwards of the outer portion, and a second, radially inner portion radially inwards of the first inner portion, the inner portions both exhibiting a second thickness being larger than the first thickness.

Abstract: A metallic flange connection gasket to be used for sealing between flanges on pipes or between attractable pipe flange and flange of an operational unit, e.g. pump or valve, the gasket exhibiting at least a pair of circling first ridges, the ridges thereof protruding from opposite faces of the gasket, right opposite to each other, and at least one first valley being adjacent a respective one of the first ridges and recessed in a respective face of the gasket. The gasket has mutually unitary portions consisting of a radially outer portion having a first thickness, a first, radially inner portion radially inwards of the outer portion, and a second, radially inner portion radially inwards of the first inner portion, the inner portions both exhibiting a second thickness being larger than the first thickness.

Abstract: A tool for joining a coupling element, such as a flange to a pipe, wherein the coupling element surrounds the pipe and has grooves facing the pipe to receive a corresponding plurality of beads provided on the pipe. The tool has a plurality of axially separated, radially movable segments. Each segment has a plurality of circle sector formed ridges. The plurality of segments thereby provides circumferentially extending ridges that are capable of deforming a pipe wall by a first pressing action on the inside wall of the pipe to create on the outside of the pipe circumferential beads in the pipe wall and to cause these beads to extend into corresponding grooves in the coupling element. The segments also have circumferentially extending portions located adjacent and between the ridges.

Abstract: A method for joining flanges or other couplings to pipes, wherein a plurality of radially expanding segments (10) with circular ridges (11) on a tool inserted into the pipe (1), press beads (5, 6) in the pipe wall into corresponding grooves (3, 4) in the surrounding coupling element (2), where the pipe end, by means of a projection on the segments, is given an overbending outwards that prevents the pipe end from tapering inwards during the pressing of the beads. The invention comprises the interior configuration of the coupling element as well as a tool for pressing the beads.

Abstract: A tool for joining a coupling element, such as a flange to a pipe, wherein the coupling element surrounds the pipe and has grooves facing the pipe to receive a corresponding plurality of beads provided on the pipe. The tool has a plurality of axially separated, radially movable segments. Each segment has a plurality of circle sector formed ridges. The plurality of segments thereby provides circumferentially extending ridges that are capable of deforming a pipe wall by a first pressing action on the inside wall of the pipe to create on the outside of the pipe circumferential beads in the pipe wall and to cause these beads to extend into corresponding grooves in the coupling element. The segments also have circumferentially extending portions located adjacent and between the ridges.

Abstract: Liquid ring compressor, characterized by an eccentric inner rotor (6) is supported in axles (8,9) to an outer co-rotor (3) for the liquid ring, where the beating of the co-rotors (11) is outside the same axles on each side is enclosed in an enclousure where it on each sides of the bearing (11) is arranged a rotating lip seal (82) which lip (83) abut the axles (8,9) at low speed, and which at high speed is projected due to centrifugal forces out and lifts itself from the axles, where through holes (81) through the co-rotor's sidewalls and bearing enclosure, its volume within the liquid ring is aired to the surrounding enclosure (1), and ensures that it is not created a differential pressure across the bearings and the seals of the bearings.

Abstract: Element for heat exchanging between fluids, where the flowing canals for the fluids are formed of slits on either side of a thin, folded sheet material (1), and that the ratio between the slit width (24) of the canals and depths (25) in the slits is less than 0.15 times the thickness of the sheet material.

Abstract: A method for joining flanges or other couplings to pipes, wherein a plurality of radially expanding segments (10) with circular ridges (11) on a tool inserted into the pipe (1), press beads (5, 6) in the pipe wall into corresponding grooves (3, 4) in the surrounding coupling element (2), where the pipe end, by means of a projection on the segments, is given an overbending outwards that prevents the pipe end from tapering inwards during the pressing of the beads. The invention comprises the interior configuration of the coupling element as well as a tool for pressing the beads.

Abstract: Liquid ring compressor, characterized by an eccentric inner rotor (6) is supported in axles (8, 9) to an outer co-rotor (3) for the liquid ring, where the bearing of the co-rotors (11) is outside the same axles on each side is enclosed in an enclousure where it on each sides of the bearing (11) is arranged a rotating lip seal (82) which lip (83) abut the axles (8, 9) at low speed, and which at high speed is projected due to centrifugal forces out and lifts itself from the axles, where through holes (81) through the co-rotor's sidewalls and bearing enclosure, its volume within the liquid ring is aired to the surrounding enclosure (1), and ensures that it is not created a differential pressure across the bearings and the seals of the bearings.

Abstract: Element for heat exchanging between fluids, where the flowing canals for the fluids consist of slits on either side of a thin, folded sheet material (1), and that the ratio between the slit width (24) of the canals and depths (25) in the slits is less than 0.15 times the thickness of the sheet material.