Abstract: Closing member (1) for a valve, which said closing member can be fitted turnably into a valve housing provided with a through flow duct (3,4). Several main ducts (5) placed side by side pass through the closing member, said main ducts jointly forming the flow opening in the closing member. At least some of the main ducts (5") in the closing member (1) are connected to one or several of the main ducts (5',5'") placed side by side by means of the side ducts (7) eccentric relative the main duct so that the central axes of the main and side ducts are in different planes placed at a distance from each other.

Abstract: Method for the manufacture or repair of a globe valve. The valve housing (1) is assembled by welding out of two or more parts around a closing member (4) shaped as a part of the face of a globe and provided with a flow opening (3), and the shaft (5) of rotation of the closing member is attached to the closing member. Before the shaft (5) of rotation of the closing member is installed in its place, the closing member (4) is turned in the housing (1) so that the point (8) of fastening of the shaft of rotation becomes positioned facing the first flow duct (6) of the housing, and the shaft of rotation is inserted into the closing member through this flow duct (6) and attached to the closing member (b 4).

Abstract: A regulation valve and a method for changing the characteristic flow curve and/or the maximum capacity of a regulation valve. The valve consists of a housing provided with a flow duct, a closing member, which is fitted inside the housing in the flow duct and shaped as a body of rotation or as a part of a body of rotation, and a turning shaft which extends from the closing member to outside the housing to facilitate relating the closing member. The shape of the forward edge of the closing face of the closing member differs from the shape of the rearward edge. The characteristic flow curve of the valve is affected by the shape of the edge of the closing face of the closing member at whose side the flow opening starts being formed when the valve is rotated from the closed position to the opened position. To change the characteristic flow and/or the maximum capacity, one of the two directions of rotation is chosen to be the direction of opening of the valve.

Abstract: A valve, which consists of a housing (1) provided with a through flow duct (2); of a closing member (3), which is shaped as a body of revolution or as a part of such body, which has been placed into the housing through an opening (7) provided on the housing, and which is fitted in the through flow duct turnably or rotably; of sealing members (5,6) fitted between the closing member (3) and the housing (1); of a cover (8) that covers the opening (7) in the housing as pressure-proof; of locking and sealing members (9,10,14) for locking and sealing the cover (8) on the housing (1); as well as of sealing members (22) for sealing the turning shaft (21) of the closing member. The cover (8) is supported against the pressure force by means of a stop face (12) placed at the circumference of the opening (7) on the housing and facing towards the interior of the housing.

Abstract: A valve consisting of a housing (1) provided with a flow-through passage (4), of a closing member (2) having the shape of a rotational body or part of a rotational body and provided with an aperture (6), and turnably disposed in said flow-through passage, and of a sealing member (3) disposed between the closing member and the housing. Between the sealing member (3) and the housing (1) has been arranged an intermediate space (8) in which when the valve is in closed position prevails a pressure urging the sealing member against the closing member (2). From said intermediate space (8) leads a passage (12) to a point close to that portion of the sealing member (3) adjacent to which an aperture communicating with the flow passage is first established when the valve is being opened.

Abstract: A valve consists of a housing provided with a closing opening, a closing member shaped as a part of a ball face, fitted turnably in the housing and resiliently connected to a pivot shaft, and of an annular sealing face. The closing member is connected to its pivot shaft by a resilient member mounted on the pivot shaft.

Abstract: Valve which consists of a body (1) provided with a flow passage, of a closing member (2), such as, e.g., a flap, fitted in the flow passage (3) pivotably or turnably and having no passage opening, and, if necessary, of jointly operative sealing members (6) fitted between the closing member (2) and the valve body (1). In the flow passage (3) in the valve body (1), after the closing member (2), at the outlet side of the flow, one or several attenuation member or members (9) are fitted, which are placed one after the other at a distance from each other and from the closing member (2), which the closing member is in the closed position, and which reduce the cross-sectional area of the flow passage (3). The attenuation member or members (9) may be provided with holes or openings (12) passing through them.

Abstract: A method for attenuating a medium flow passing through a valve provided with a flow passage. Into the valve, a substantially ball-like or ball-segment shaped or conical or cylindrical plug-like closure member has been fitted turnably. The attenuating of the flow has been arranged as taking place in both flow directions mainly in the passage in the closure member or in a bore passing through the closure member. The attenuating effect is increased as the valve is being closed and the attenuating effect is correspondingly reduced as the closure member is being turned towards the open position. In the passage in the closure member or in the bore passing through the closure member, the length of the path of flow of the pressure medium is increased and the direction of the flow of the pressure medium is alternated.

Abstract: A gate valve having a cylindrical angle-transported disc gate pivotally moveable into a channel closing position in which it is in sealing engagement with a packing ring disposed in a radial packing groove in a body defining the channel. The outer diameter of the packing ring is smaller than the diameter of the packing groove so that when the gate is pivoted into a channel closing position in sealing engagement with the packing ring, the ring is biased into tight sealing engagement with the gate.

Abstract: A two-way linear actuator for changing a linear movement of a piston into a rotating movement of a shaft. The actuator is operated by some mechanical device generally comprising two cylinders, a piston movable inside the cylinders, a torque shaft at a right angle to the piston movement, and a machine element connecting the torque shaft to the piston located within the piston, and sealed from the interior of the cylinders.

Abstract: The flangeless valve is disposed between flange bolts of adjacent pipe flanges. The valve comprises a body which has two parts, a closing element rotatably mounted within the body and seat rings mounted in ring-shaped transverse grooves machined in both sides of the body. The valve body diameter is small enough so that the valve may be placed in the pipeline, between flange bolts of the pipe flanges. Most bolts do not contact the valve body and pass through holes in the pipe flanges; other fasteners are attached to a frame on the valve through the flanges thereby transmitting the bolt clamping force. One body construction can use a circumferential seal between the body halves in the body joint. Such seal ends at the shaft and a ring-shaped seal is located in a plane perpendicular to the circumferential seal and presses against its ends with a tightenable bushing.