A shear seal includes a seal plate having a first seal surface and a sliding seal assembly having a second seal surface, and at least one of the first and second sealing surfaces comprise an insert comprising a material different than that of the seal plate or the sliding seal connected to the seal plate or sliding seal assembly by a compressed member disposed between the insert and the adjacent surface of seal plate or sliding seal assembly.

A valve device includes a flow path formation member provided with at least one flow path hole through which a fluid passes, and a drive part that outputs a rotational force. The valve device includes a shaft, and a rotor having a sliding surface that slides while facing an opening surface of the flow path formation member where the flow path hole is opened, and the rotor is configured to increase or decrease an opening degree of the flow path hole with rotation of the shaft. The valve device includes an energization member that energizes the rotor toward the flow path formation member. The valve device includes a coupling structure configured to tiltably couple the shaft to the rotor such that a contact state between the sliding surface and the opening surface is held regardless of a posture or a position of the shaft.

A valve plate for a closure device for closing an opening in a vacuum-tight manner. A front side of the valve plate has a seal ring for sealing to the wall, and the rear side has a depression for connecting to a valve rod. In regions of two mutually opposite lateral walls of the depression, an extension adjoins in each depression. For each respective extension a threaded bore is present, which on a lateral wall thereof opens into the extension. The valve rod is connectable to the valve plate by a respective retaining bolt screwed into the respective threaded bore and via an end portion that protrudes from the threaded bore into the extension, with the end portion interacting with a groove on a connecting part connected to the valve rod end, or at the valve rod end is configured integral to the latter.

A fluidic valve for switching between different fluid coupling states includes a stator having at least one fluidic stator interface, a rotor having at least one fluidic rotor interface, wherein the rotor is rotatable relative to the stator to thereby switch the fluidic valve between a plurality of different fluid coupling states between the at least one fluidic stator interface and the at least one fluidic rotor interface, and a force transmission mechanism configured for pressing the stator and the rotor together by a contactless force transmission to provide for a fluid tight sealing between the stator and the rotor.

A fluidic valve for switching between different fluid coupling states includes a stator having at least one fluidic stator interface, a rotor having at least one fluidic rotor interface, wherein the rotor is rotatable relative to the stator to thereby switch the fluidic valve between a plurality of different fluid coupling states between the at least one fluidic stator interface and the at least one fluidic rotor interface, and a force transmission mechanism configured for pressing the stator and the rotor together by a contactless force transmission to provide for a fluid tight sealing between the stator and the rotor.

A valve arrangement, having a housing with a fluid line and a valve arranged in the fluid line which has a valve seat, a valve flap, and a valve opening, the valve flap being pivotable about a pivot axis between a closed position, in which the valve flap lies against the valve seat and closes the valve in fluid-tight fashion, and an open position, in which the valve flap opens up the valve opening. The valve flap, in the closed position, defining an X-Y plane of a coordinate system and the pivot axis being arranged with a spacing to the X-Y plane and defining the Y direction of the coordinate system. An alignment mechanism aligns the arrangement in which the valve flap is situated relative to the valve seat in the closed position to be is alignable and fixable at least in the X direction.

A fluid control valve includes a shaft member configured to move along an axis by drive force from a drive source, and a holding member including a cylindrical portion in which a second end portion of the shaft member is placed by insertion with a predetermined clearance provided in a radial direction. The holding member includes a valve element and a seal member. The fluid control valve includes a housing including an inlet port, an outlet port and a valve seat. The cylindrical portion includes a protrusion protruding radially inward. The second end portion of the shaft member includes a first region including a first contact portion configured to be in contact with a bottom portion of the cylindrical portion. The second end portion of the shaft member includes a second region including a second contact portion being in contact with the protrusion.

A closure device for closing an opening in a wall in a vacuum-tight manner has a valve plate, which by way of a connecting device is connected to a valve rod, for closing and exposing the opening. The connecting device has a swivel head of which at least portions of the external surface are of a spherical configuration and which is disposed in a receptacle space of a joint body. For blocking a rotation of the swivel head about the longitudinal axis of the valve rod, at least one projecting stud, that is disposed on the swivel head or joint body, protrudes into an assigned groove which is disposed in the other one of these two parts and which in a central position of the connecting device extends in a plane that lies parallel to the longitudinal axis of the valve rod.

A fluid control valve includes: a shaft member that moves along an axis of the shaft by a driving force from a driving source connected to one end of the shaft member; a holding member including a bottomed tubular portion into which the other end of the shaft member is inserted with a radial predetermined gap and which has a recess formed to be recessed radially inward from a surface of the tubular portion, and a valve body formed by fixing a sealing member to an outer periphery of a flat plate shaped main body portion that extends radially outward from the tubular portion; a housing that includes an inlet and an outlet of a fluid, has an annular valve seat on which the valve body abuts to block a communication between the inlet and the outlet, and accommodates the shaft member and the holding member.

A fluid control valve includes: a shaft member that moves along an axis of the shaft by a driving force from a driving source connected to one end of the shaft member; a holding member including a bottomed tubular portion into which the other end of the shaft member is inserted with a radial predetermined gap and which has a recess formed to be recessed radially inward from a surface of the tubular portion, and a valve body formed by fixing a sealing member to an outer periphery of a flat plate shaped main body portion that extends radially outward from the tubular portion; a housing that includes an inlet and an outlet of a fluid, has an annular valve seat on which the valve body abuts to block a communication between the inlet and the outlet, and accommodates the shaft member and the holding member.