Vat Holding Ag

Hanspeter Frehner

Martin Netzer

Florian Ehrne

Christof Bachmann

Claudio Zanetti

A valve on which a valve plate is arranged in a valve housing interior space of a valve housing and fixed to a shaft, in which the valve plate together with the shaft can be displaced back and forth in directions parallel to a shaft longitudinal axis between a closed position and an intermediate position, and by rotation of the shaft about the shaft longitudinal axis can be pivoted back and forth between the intermediate position and a maximum open position. A shaft leadthrough for sealing the shaft with respect to the valve housing has a bellows which can be expanded and pushed together in the directions parallel to the shaft longitudinal axis, a first bellows end of this bellows being fixed to the valve housing, and a shaft sealing ring in which the shaft is rotatably mounted, being arranged on a second bellows end.

Valve, in particular a vacuum valve

Disclosed is a regulating vacuum valve having a first valve seat having a first valve opening defining a first opening axis and a first sealing surface surrounding the first valve opening, and a first valve disk having a first contact surface corresponding to the first sealing surface. The valve includes a drive unit coupled to the first valve disk to adjust at least between an open position to a closed position. The regulating vacuum valve has at least one second valve seat, having a second valve opening with a second sealing surface. In addition, a second valve disk having a second contact surface corresponding to the second sealing surface is provided. An overall valve opening of the regulating vacuum valve is formed by the first valve opening as a first valve partial opening and the second valve opening as a second valve partial opening.

Vacuum valve for providing a symmetrical fluid flow

A seal support ring () for a valve (), particularly a vacuum valve, which has a throughflow opening () and a basic body (), which annularly surrounds the throughflow opening, and a fastener arrangement () for fastening the seal support ring to a valve housing () of the valve. The basic body has a first side () on which the seal support ring, in a mounted state on the valve housing, lies against the valve housing, and the seal support ring has a seal ring () made from an elastomer which, in its position on the basic body, surrounds the throughflow opening. A casing wall () is arranged on the basic body and at least partially surrounds the throughflow opening and, on a second side () of the basic body () opposite the first side, protrudes from the basic body and has a larger inside diameter than the seal ring.

Seal support ring for a valve

A valve, in particular a vacuum valve, in which, in order to close a passage opening, in particular of the valve, at least one closure member can be moved by a valve drive, starting from a maximum open position, in which the closure member opens the passage opening at least partially, first on a first partial path into an intermediate position, and the closure member can be moved, starting from the intermediate position, on at least one second partial path which is angled away from the first partial path into a closed position, in which the closure member closes the passage opening, the valve drive having at least two cylinder spaces which are loadable in each case with a pressure medium, at least one piston being mounted displaceably in each of the cylinder spaces, and the pistons being supported on one another by way of at least one prestressing element.

Growing community of inventors

Sevelen, Switzerland

Hanspeter Frehner