Abstract: A manifold of a valve conducting gas or liquid has a passage with an inlet and at least one outlet. The passage changes direction from the manifold inlet to the manifold outlet over a length of the passage. The cross-section of the manifold in the region where the passage changes direction, merges in a plurality of sequential sectors from an almost round or oval cross-section over a plurality of cross-sections that are flattened on the inner manifold side again into an almost round or oval cross-section. In the region of the flattened cross-section of the passage, the cross-sectional contour has a plurality of arcuate sections that are continuous with one another.

Abstract: A gate valve for blocking a pipe, wherein the gave valve comprises a valve body and a wedge, which is insertable into a wedge receptacle disposed in the valve body, wherein the wedge has a wedge plate on at least one side in the passage direction of the pipe, which is disposed on the wedge with a clearance in the direction of the center longitudinal axis of the pipe, wherein the wedge plate is adapted to be pressed by at least one elastic element against the wedge receptacle in the valve body, wherein the at least one elastic element is configured as an approximately circular-shaped circumferential bellows having a central opening.

Abstract: A gate valve includes a valve body and a spindle drive. The spindle drive has, at its one end, a wedge for blocking a pipe. The spindle drive includes a motor-driven spindle, wherein, wherein the spindle is connected by way of a coupling to a shaft in an axially displaceable manner, and the shaft has the wedge at its end.

Abstract: A gate valve includes a valve body and a spindle drive. The spindle drive has, at its one end, a wedge for blocking a pipe. The spindle drive includes a motor-driven spindle, wherein, wherein the spindle is connected by way of a coupling to a shaft in an axially displaceable manner, and the shaft has the wedge at its end.

Abstract: A pipeline shut-off device (10) comprising a tube section (10a) arranged in a pipeline (3) and having a shut-off member (19), wherein the shut-off member (19) can be destroyed in the closed position by a device (22) arranged in the region of the pipe section (10a), with the device for destroying the shut-off member (19) being able to be actuated from the outside.

Abstract: A manifold of a valve conducting gas or liquid has a passage with an inlet and at least one outlet. The passage changes direction from the manifold inlet to the manifold outlet over a length of the passage. The cross-section of the manifold in the region where the passage changes direction, merges in a plurality of sequential sectors from an almost round or oval cross-section over a plurality of cross-sections that are flattened on the inner manifold side again into an almost round or oval cross-section. In the region of the flattened cross-section of the passage, the cross-sectional contour has a plurality of arcuate sections that are continuous with one another.

Abstract: A gate valve for blocking a pipe, wherein the gave valve comprises a valve body and a wedge, which is insertable into a wedge receptacle disposed in the valve body, wherein the wedge has a wedge plate on at least one side in the passage direction of the pipe, which is disposed on the wedge with a clearance in the direction of the center longitudinal axis of the pipe, wherein the wedge plate is adapted to be pressed by at least one elastic element against the wedge receptacle in the valve body, wherein the at least one elastic element is configured as an approximately circular-shaped circumferential bellows having a central opening.

Abstract: A measuring device includes means for converting a physical quantity to be measured into a corresponding magnetic field. A magnetooptic element is aligned with a polarizer which passes incident light in one plane only. The part of the magnetooptic element which intercepts the transmitted magnetic field rotates the throughgoing light and the position of rotation is indicated on an optical indicator.