Abstract: When using oxygen gas pipes 3, situations can arise, in particular due to slag return and similar dangers, in which the operator must initiate safety measures. Slag return safety devices are known which, in such a case, ensure that the gas flow is stopped by melting a cap 35 of a heat sensor 5. The response of this outlet valve 6 of the slag return safety device can be recognized, for example, by the fact that the inlet pressure of the existing oxygen gas 4 is used to push pins 21 located in the wall 19 of the oxygen gas pipe 3 beyond the outside 27 of the oxygen gas pipe 3, so that they cannot be overlooked as a warning signal. The movement of the pins 21 can be used to activate further signal systems 30 in order to provide additional indications of this movement optically and/or acoustically.

Abstract: A fitting for shutting off and/or regulating flows of substance for use in pressure ranges above 50 bar has a housing body and a valve disc which can be operated from a drive lying outside the housing body via a valve shaft. The housing body is provided with a maintenance opening that can be shut off in a pressure-tight manner by a self-sealing lid that has a seal. In order to allow objects that are as large as possible, in particular the valve disc, to be guided through the maintenance opening during inspection works, without increasing the weight of the housing body, the maintenance opening has a rectangular passage cross section. In contrast to known circular maintenance openings which are known in this pressure range, a rectangular passage cross section permits a smaller surface area for the passage cross section and therefore a lighter housing body.

Abstract: A butterfly valve with a valve disk mounted to swivel about an axis of rotation inside a housing and torsionally rigidly connected to a drive shaft pivotably mounted inside the housing. To ensure a connection which, from the standpoint of production engineering, is simple, yet secure, the valve disk is torsionally rigidly connected to the drive shaft by means of a minimum of two tapered pins engaging opposite sides of the drive shaft.

Abstract: A venting and/or bleeding valve with a valve housing, a main valve arranged in the valve housing for rapid venting and bleeding of piping connected to the valve housing, an auxiliary valve arranged in the valve housing for operating ventilation of the piping at operating pressure, and a float arranged within the valve housing and controlling the main valve and the auxiliary valve as a function of the filling level of a fluid located in the valve housing. The venting and/or bleeding valve contains a valve position sensor for acquisition of the position of the main valve, at least one additional sensor for acquisition of the humidity and/or the pressure and/or of the temperature in an interior space of the valve housing, and an evaluation unit for acquisition of an operating state of the venting and/or bleeding valve as a function of the values acquired by the valve position sensor and any additional sensor.

Abstract: A control cylinder for a control valve, the control cylinder including a main body having through-openings. To optimize the flow and to reduce cavitation, the through-openings have an inside wall with a curved, oblique or conical profile and/or with edges and/or undercuts.

Abstract: A control or shutoff valve with a housing includes a valve seat arranged within housing between feed and a discharge, and a shutoff element arranged to be moveable relative to the valve seat in the housing. At least one feed channel leading to the valve seat is arranged in the housing to supply a pressure medium to reduce cavitation phenomena.

Abstract: A shut-off valve housing having a through-channel extending inside a main body between an inlet opening and an outlet opening, and a valve seat disposed inside the through-channel. To reduce flow losses, an outflow region of the through-channel immediately downstream of the valve seat on an outflow side has an inwardly curved contour.

Abstract: A butterfly valve with a valve disk mounted to swivel about an axis of rotation inside a housing and torsionally rigidly connected to a drive shaft pivotably mounted inside the housing. To ensure a connection which, from the standpoint of production engineering, is simple, yet secure, the valve disk is torsionally rigidly connected to the drive shaft by means of a minimum of two tapered pins engaging opposite sides of the drive shaft.

Abstract: A valve disk with a disk-like valve body, which has a front with two protruding hubs and a back opposite the front. In order to permit improved flow around the valve disk and reduction of eddies on the outflow side, arc-like recesses running along an inside surface of both hubs are arranged on the front of valve body to deflect the flow around hubs.

Abstract: In a multiple secured coupling device for oxygen lances (1), the male connector (8) of the safety pipe (3), the connection part (18) of the lance holder (2) and also the cap nut (9) have extending safety pieces (10, 11). The male connector (8) can be inserted very far into the female part (19) or the connection part (18) and then located in position by using the cap nut (9). A total of five sealing zones are created and are particularly effective in preventing the escape of highly flammable gases, in particular oxygen.

Abstract: The present invention relates to a ventilating and evacuating valve for fluid-guiding conduit pipes or braces. The valve includes a valve mechanism and a floating body which acts on the valve mechanism. The valve mechanism includes a valve body which can be moved into different opening or closing positions in order to open and close a valve outlet; a diaphragm cup; and a roll diaphragm which is arranged between the valve body and the diaphragm cup and can come to rest in different opening or closing positions over aperture openings of the valve body. The valve also includes a channelling mechanism which is configured to guide an evacuating flow past the valve mechanism.

Abstract: The invention relates to an actuating device for housed or housingless valves; in particular for valves for pipelines for transporting liquid or gaseous medium, preferably for pipelines above a nominal diameter of DN 100 or channels, having a drive motor, having a gearing (2), and having an emergency running drive (3) by means of which the gearing (2) can be actuated independently of the drive motor, wherein as a drive motor a servo motor (4) is provided which has a measuring device which determines the respectively present position of the servo motor (4) in relation to its initial position and outputs corresponding measured values, a working memory is provided into which the measured values of the measuring device of the servo motor (4) are written, an electronic control unit (8) is provided which reads out the measured values of the measuring device of the servo motor (4); and performs position control of the servo motor (4) and therefore of the actuating device on the basis of the measured values from the

Abstract: A gate valve includes a valve plate located in a movable manner within a holder, a sealing for sealing off of the valve plate relative to the holder, and a wedge arrangement with several first wedge elements located on the valve plate in its direction of movement at a distance from one another, and second wedge elements belonging to the first wedge elements, by means of which the valve plate is pressed transverse to the direction of movement of the valve plate against the sealing with a movement into a closing position. In order to facilitate a low-friction actuation with a reduced actuation force, also in a compact and space-saving manner, the second wedge elements are supported on the holder, so that they can move relative to the holder.

Abstract: The invention relates to an actuating device for housed or housingless valves; in particular for valves for pipelines for transporting liquid or gaseous medium, preferably for pipelines above a nominal diameter of DN 100 or channels, having a drive motor, having a gearing (2), and having an emergency running drive (3) by means of which the gearing (2) can be actuated independently of the drive motor, wherein as a drive motor a servo motor (4) is provided which has a measuring device which determines the respectively present position of the servo motor (4) in relation to its initial position and outputs corresponding measured values, a working memory is provided into which the measured values of the measuring device of the servo motor (4) are written, an electronic control unit (8) is provided which reads out the measured values of the measuring device of the servo motor (4); and performs position control of the servo motor (4) and therefore of the actuating device on the basis of the measured values from the

Abstract: A lance holder characterized by a high degree of safety is equipped with a mounting or a pipe fixing, which safely prevents a rotation even of a bent lance pipe in the lance holder. The clamping head has a fixing part and a clamping part which ensure a punctiform fixation by way of displaceable pressure elements, particularly in the form of spheres. At least three such spheres are disposed across the circumference in a distributed manner, and ensure the safe fixation across a large tolerance range with regard to the dimensions of lance pipes. Said large tolerance region is further secured in that sealing sleeves having a larger inside diameter may be used, since the same are no longer deformed in the longitudinal direction in order to provide the seal, but instead are deformed in the radial direction. In summary the high degree of operational safety is also completed by the association of a chip and/or attachment of a nanocoating.

Abstract: A device for shutting off the flow in pipelines, hoses or the like, in particular a non-return valve having a housing for installing in a pipeline or the like. The housing has a flow channel, of which the flowed-through cross section can be closed by a valve, the valve having a valve disc for closing the cross section and a valve stem for guiding the valve and the valve being mounted by means of the valve stem in a retaining plate, so as to be displaceable in the direction of flow.

Abstract: The invention relates to an airing and venting valve for pipes and fittings carrying fluid, comprising a substantially cup-shaped valve body becoming smaller in cross-section towards the bottom for closing and opening a valve outlet, with a seal cup co-operating with a float of the valve, and a cup seal which is disposed between the valve body and seal cup and is able to move into different closing and opening positions lying across passage orifices of the valve body. By virtue of one aspect of the invention, the seal cup has an internal contour which becomes wider towards the top conforming to the external contour of the valve body. By virtue of another aspect, the valve body is disposed so that it is able to move against its seat at the valve outlet so that it can release and close a passage in the region of the valve body seat.

Abstract: The invention relates to a slider 1 for installation in a pipe, with a housing 2, a counter flange 3 and a sliding plate 4, wherein the housing 2 and the counter flange 3 respectively have an opening 5, the housing 2 and the counter flange 3 are connected to one another such that a common opening 5 for the pipe is provided, the sliding plate 4 is guided between the housing 2 and the counter flange 3, and the sliding plate 4 can be displaced between an open position and a closed position for the common opening 5, characterized in that the sliding plate 4 is provided with a seal 6 and the sliding plate 4 in its closed position bears against the counter flange 3 with the seal 4, or a seal 6 is provided between the sliding plate 4 and the housing 2. An improved seal between the sliding plate 4 and the counter flange 3 or between the sliding plate 4 and the housing 2 is thus achieved.

Abstract: A casing for a ventilating and evacuating valve for pipe lines and/or fittings is provided. The casing comprises a hollow body, a connecting section and a ventilating and evacuating section. At least the hollow body of the casing is formed substantially of aluminium.

Abstract: The invention relates to an airing and venting valve for pipes and fittings carrying fluid, comprising a substantially cup-shaped valve body becoming smaller in cross-section towards the bottom for closing and opening a valve outlet, with a seal cup co-operating with a float of the valve, and a cup seal which is disposed between the valve body and seal cup and is able to move into different closing and opening positions lying across passage orifices of the valve body. By virtue of one aspect of the invention, the seal cup has an internal contour which becomes wider towards the top conforming to the external contour of the valve body. By virtue of another aspect, the valve body is disposed so that it is able to move against its seat at the valve outlet so that it can release and close a passage in the region of the valve body seat.