A regulating valve with at least one gas outlet conduit and a housing having at least one outlet hole in fluid communication with the outlet conduit; a rotating disc arranged in the housing; a spring axially retaining the rotating disc in the housing; and sealing means surrounding the at least one outlet hole. The sealing means includes a gasket having a closure member associated with each outlet hole, surrounding the same, and at least one attachment arm attached to the at least one closure member. The attachment arm including at least one protuberance, with the rotating disc being supported on the closure members and on the protuberances when it presses on the gasket.

A backwater gate valve assembly having a gate valve movable between a closed position where the gate occludes an outlet opening and an open position where the gate valve does not occlude the outlet opening. The gate valve is coupled to a motorized actuator that is configured to move the gate valve between the open and closed positions upon sensing of a predetermined level of water in the body of the backwater gate valve assembly.

A backwater gate valve assembly having a gate valve movable between a closed position where the gate occludes an outlet opening and an open position where the gate valve does not occlude the outlet opening. The gate valve is coupled to a motorized actuator that is configured to move the gate valve between the open and closed positions upon sensing of a predetermined level of water in the body of the backwater gate valve assembly.

A tool to manage flanges during installation and dismantling of flanges includes a first ring support structure and a second ring support structure spaced apart along a tool axis. First and second mechanical arms are retained on the first and second ring support structures. Each of the mechanical arms has an extendible arm joint that is operable to adjust an axial distance between the first and second ring support structures. A guide shaft is coupled to the first and second ring support structures. The guide shaft is positioned to guide a relative movement between the first and second ring support structures during operation of the extendible arm joints of the first and second mechanical arms.

A valve device includes: a driving source making rotational motion; a rotated part provided rotatably around a predetermined axis; and a fluid passage portion having a flow hole for passing a fluid. The valve device further includes: a gear mechanism having gears to transmit rotational motion of the driving source to the rotated part by engagement between the gears to rotate the rotated part; and a biasing part biasing the rotated part toward one side in a circumferential direction with the predetermined axis at the center. The rotated part includes a rotor increasing or reducing an opening of the flow hole in conjunction with rotation of the rotated part and is rotated according to rotational motion of the driving source while being biased toward the one side in the circumferential direction by the biasing part.

A tool to manage flanges during installation and dismantling of flanges includes a first ring support structure and a second ring support structure spaced apart along a tool axis. First and second mechanical arms are retained on the first and second ring support structures. Each of the mechanical arms has an extendible arm joint that is operable to adjust an axial distance between the first and second ring support structures. A guide shaft is coupled to the first and second ring support structures. The guide shaft is positioned to guide a relative movement between the first and second ring support structures during operation of the extendible arm joints of the first and second mechanical arms.

A valve including a first member including a fluid flow aperture therethrough; a second member movably connected to the first member between an open position and a closed position relative to the fluid flow aperture; at least one electromagnetic actuator connected between the first member and the second member, where the at least one electromagnetic actuator is configured to move the second member between the open position and the closed position, where the at least one electromagnetic actuator includes a first electromagnetic actuator having a stationary portion connected to the first member and a movable portion connected to the second member; and at least one mechanical flexure connected between the first member and the movable member of the actuator, where the at least one mechanical flexure constrains motion of the movable member to along a substantially straight line.

A valve including a first member including a fluid flow aperture therethrough; a second member movably connected to the first member between an open position and a closed position relative to the fluid flow aperture; at least one electromagnetic actuator connected between the first member and the second member, where the at least one electromagnetic actuator is configured to move the second member between the open position and the closed position, where the at least one electromagnetic actuator includes a first electromagnetic actuator having a stationary portion connected to the first member and a movable portion connected to the second member; and at least one mechanical flexure connected between the first member and the movable member of the actuator, where the at least one mechanical flexure constrains motion of the movable member to along a substantially straight line.

Disclosed is a vacuum valve having a valve seat, which has a valve opening, defining an opening axis, and a first sealing surface, a valve closure having a second sealing surface corresponding to the first sealing surface, a drive unit coupled to the valve closure, which can be moved from an open position, in which the valve closure and the valve seat do not contact each other, to a closed position, in which there is a sealing contact between the first sealing surface and the second sealing surface by a seal there between, and the valve opening is sealed gastight as a result. The vacuum valve has at least one temperature sensor, where the temperature sensor is designed and arranged such that, from the temperature sensor, a measurement signal representing thermal information in respect of at least one part of the vacuum valve can be detected.

The invention relates to a vacuum valve comprising a sensor assembly with at least one force sensor which has a deformation-sensitive element. The sensor assembly is designed such that a measurement signal relating to a compression of the seal (TO) which lies between a first and a second seal surface, said compression being produced by the first and the second seal surface, is detected by means of the sensor assembly.