Abstract: Ring-shaped flange gasket produced from a rubbery-elastic material, said flange gasket comprising two rings (2, 3), each having a ring-shaped reinforcing insert (9, 10), said rings being formed in a wedge-shaped manner transversely relative to the ring axis (4) and, at sides (5, 6) that face each other, adjoining one another at right angles to the ring axis (4) by means of planar surfaces and there being in engagement with one another so as to be rotatable, wherein along at least one circumferential section, the ring-shaped reinforcing insert (9, 10) has a wave profile (11) with an increasing wave height in a region of increasing wedge height.

Abstract: Ring-shaped flange gasket produced from a rubbery-elastic material, said flange gasket comprising two rings (2, 3), each having a ring-shaped reinforcing insert (9, 10), said rings being formed in a wedge-shaped manner transversely relative to the ring axis (4) and, at sides (5, 6) that face each other, adjoining one another at right angles to the ring axis (4) by means of planar surfaces and there being in engagement with one another so as to be rotatable, wherein along at least one circumferential section, the ring-shaped reinforcing insert (9, 10) has a wave profile (11) with an increasing wave height in a region of increasing wedge height.

Abstract: The invention relates to an elastomer-bonded sheet material encompassing vulcanized elastomer content and content composed of at least one filler bonded therein, where the vulcanized elastomer content encompasses, based on the entire elastomer content, from about 25 to 70% by weight, preferably from about 40 to 60% by weight, of at least one vulcanized elastomer which in the unvulcanized state has not more than 10%, preferably not more than 7%, of unsaturated carbon double bonds in the main chain.

Abstract: The invention relates to a laminated sealing material comprising at least two layers which are bonded to one another, at least a first layer of which is a graphite foil, which is bonded to a second layer of graphite foil, fluoropolymer or paper, the first and second layers being adhesively bonded to one another by means of a layer of fluoropolymer applied over a preferably aqueous dispersion.

Abstract: The invention relates to an elastomer-bonded sheet material encompassing vulcanized elastomer content and content composed of at least one filler bonded therein, where the vulcanized elastomer content encompasses, based on the entire elastomer content, from about 25 to 70% by weight, preferably from about 40 to 60% by weight, of at least one vulcanized elastomer which in the unvulcanized state has not more than 10%, preferably not more than 7%, of unsaturated carbon double bonds in the main chain.

Abstract: A sealing ring, for use in establishing a fluid-tight connection between the facing ends of tubular members which are to be braced axially with respect to one another, comprises a thin sheet-metal ring provided with a corrugation which defines an effective sealing ring thickness greatly in excess of the thickness of the sheet-metal. The sealing ring is provided with a non-metallic coating on both sides, the coating on at least one side being a layer which functions to achieve microsealing.

Abstract: Expanded graphite sealing rings having particles of PTFE captured at least in a surface layer are disclosed. The sealing rings are produced by impregnating porous rings, cut from a sheet of low density expanded graphite, with a PTFE dispersion and then compressing the rings to a desired final density. Impregnation is accomplished in the presence of an electric field.

Abstract: A lenticular sealing ring comprises alternately arranged lamellae (1) made of expanded graphite and metal lamellae (2). The density of the graphite lamellae (1) increases from the inside toward the outside of the sealing ring. The layering is configured so that on both sides of the lenticular surfaces at least half of the curved surface is covered by a continuous graphite lamella (1') and a plurality of encircling metal and graphite lamellae (1, 2) terminated in the outer edge region.

Abstract: A shut-off valve includes a housing defining a flow channel and a bore for receiving a rotary actuator, a valve member, and first and second seal rings. The first seal ring cooperates with the valve member to close and seal the flow channel. The second seal ring cooperates with the valve member to seal the actuator bore. The seal rings are composed of radially extending metal lamellae interposed between soft material lamellae. The soft material lamellae are composed of lubricating material having a non-homogeneous structure which have the capacity to form radial freely extending sliding layers. The metal lamellae have, at least in the region around the inside surface of the seal rings, axial deformations. Such axial deformations provide positive mechanical connection to the adjoining soft material lamellae, restricting the soft material sliding layers to at most one third of the lamellae thickness.

Abstract: A stuffing-box packing for establishing a seal between a housing bore and a rotatable shaft which has at least one packing ring comprising expanded graphite and a pair of disc-shaped stripper elements which are comprised of a suitable plastic or metal. To ensure high tightness over a long service life, the packing ring is inclined relative to the radial plane of the shaft, is covered on both sides by a stripper element having an edge which makes coaxial and circumferential contact with the shaft, the laminate of packing ring and stripper elements is arranged between two support rings-which have oblique support surfaces inclined corresponding to the angle of inclination of the packing ring, and the thickness of the packing ring is such that the area of the shaft swept by the packing ring is at least almost completely subjected to the stripping action of the stripper elements.

Abstract: A shut-off valve includes a housing defining a flow channel and a bore for receiving a rotary actuator, a valve member, and first and second seal rings. The first seal ring cooperates with the valve member to close and seal the flow channel. The second seal ring cooperates with the valve member to seal the actuator bore. The seal rings are composed of radially extending metal lamellae interposed between soft material lamellae. The soft material lamellae are composed of lubricating material having a non-homogeneous structure which have the capacity to form radial freely extending sliding layers. The metal lamellae have, at least in the region around the inside surface of the seal rings, axial deformations. Such axial deformations provide positive mechanical connection to the adjoining soft material lamellae, restricting the soft material sliding layers to at most one third of the lamellae thickness.

Abstract: A piston type of shut-off valve with a sealing ring made of expanded graphite. A plurality of ring-shaped lamellae are each stamped from a foil of expanded graphite and then joined to form a sealing ring. A peripheral edge surface of the sealing ring, rather than its planar facing surface, comes into sealing contact with the piston thereby improving its service life. Service life of the sealing ring can be further improved by using a guard ring on a facing surface of the sealing ring as well as by using an installed density for the sealing ring of 1.5 to 2.2 g/cm.sup.3.

Abstract: A kit of gaskets comprises at least one piece (10) of gasket forming material, preferably of the "dry joint" grade, which piece includes gasket parts (1) and packaging parts (2). Cuts (4) separate the gasket parts (1) from the packaging parts (2). The cuts (4) do not extend around the gasket peripheries but terminate so as to define interconnecting regions (6). At least two of the gasket parts may define segments (14, 16) each having a dovetail projection (12) or recess (14) adapted for engagement with one another. The bolt holes are formed by removing the pips of material from the piece.

Abstract: The fluid valve comprises an integral housing made of forged steel, the housing having tubular end portions as fluid inlet and outlet, respectively, conical transition zones having a cone angle of at least 30.degree., and a central enlargement joined by said transition zones to said inlet and outlet ducts. The valve system is positively held between the transition zones. One of the transition zones may form the valve seat cooperating with an axially displaceable valve body.

Abstract: A liquid level indicator includes a magnetized float and a plurality of magnetized indicator elements which are pivoted by the float magnet and which have distinguishable opposite surfaces to provide the liquid level indication, the indicator elements being formed from a material which provides magnetic fields of opposite magnetic polarity which extend substantially continuously along the opposite edges of the indicator elements.

Abstract: A sealing arrangement specifically for shut off devices is disclosed. A shut off device has two annular metallic sealing members of which one is a rigid body and the other is a thin-walled elastically deformable body. One of the sealing members features a considerable large hardness. The other sealing member comprises a coating of a soft metal, filling all irregularities of the surface thereof. Upon closing of the shut off device the surfaces of the two sealing members rub against each other, whereby the coating of soft metal is rubbed off until portions thereof remain in the recesses of the metal forming the substrate of this sealing member. This assures an excellent sealing of the shut off device.

Abstract: A valve for controlling or preventing fluid flow has a shut-off element controllably movable in an axial direction between a first position corresponding to a fully open condition of the valve and a second position corresponding to a fully closed condition of the valve,a valve seat with which the shut-off element is capable of fluid-tight sealing engagement when in the said second position,drive means operatively connected to the shut-off element and capable of controllably transmitting a drive to the shut-off element to effect the said controlled movement thereof towards one of either of the said first and second positions thereof,said drive means including a connecting member transmitting the drive to the shut-off element, the shut-off element moving relatively to said connecting member in said axial direction when driven by said drive means, and furthermore being moved axially when said connecting member is moved axially,a housing defining a chamber,a diaphragm within said chamber and having a central regi

Abstract: A double-acting closure valve for use in a coaxial flow system consists of an inner pipe having an inner wall surface including surface portions which are profiled so as to provide a pair of inner valve seats spaced apart axially from one another, an inner body disposed coaxially within the inner pipe and having associated therewith a pair of inner valve closure members movable generally axially so as to abut the inner valve seats and an outer pipe coaxial with the inner pipe and having an inner wall surface including surface portions which are profiled so as to provide a pair of outer valve seats spaced apart axially from one another, an outer wall surface of the inner pipe also including surface portions each of which is profiled to enable one of a pair of outer valve closure members associated therewith to move generally axially so as to abut an outer valve seat.

Abstract: A method of ascertaining the state of aggregation of a medium, whereby the flow of the medium is directed to a first of a series of two or more coaxially arranged nozzle means, further the initial pressure of said medium ahead of said series of nozzle means is compared with a further pressure, said pressure generated when following nozzles are flowed at directly through a respective preceding nozzle via a closed space arranged between two or more nozzles or following the final nozzle, and the correspondingly generated differential pressure is utilized as measurement value for indication of the state of aggregation and if necessary directly or indirectly for controlling the flow of said medium.

Abstract: A sealing system for a shutoff element having two substantially ring-shaped sealing elements forming at least two substantially ring-shaped sealing lines. A given one of the sealing elements is constructed as a thin-wall body which is elastically deformable under the action of a closing force. The given sealing element, in the closed position of the shutoff element, under deformation of its wall bearing against the other sealing element at least at two ring regions with line contact. Means define free deformation spaces for the wall of the thin-wall body beneath said ring regions, and means define a respective support adjacent said deformation spaces and extending substantially parallel to the ring regions and against which bears said wall.