The invention relates to a hydraulic proof test assembly comprising at least a valve (1) with parallel seats (102). It comprises: a shut-off member (2) with parallel plates (20, 21), connected by connecting means for regulating their separation, to make them go from a first position in which this separation is sufficient to enable the shut-off member (2) to be introduced into said valve (1) to a second position where said separation is greater, this separation making it possible to apply them firmly against said parallel seats (102); a device (3) for inserting said shut-off member (2) into said valve (1) which comprises at least a “U” shaped tool, configured to be introduced into said valve (1), its parallel arms forming guides, while its base forms a support for retaining said shut-off member (2); a “dummy stem” (4).

A shut-off device for a pipe in a pipeline and responsive to ingress of water, has at least two valves for installation in the pipe of the pipeline. Each valve has a valve member supported for movement between an open position when the valve is open for passage of a fluid through the pipe, and a closed position when the valve is closed for preventing passage of the fluid through the valve. The device includes a buoyant member associated with the valve members for causing movement of the valve members to the closed positions upon ingress of water to the buoyant member. The valve members are moved to the closed positions in respective upstream and downstream directions of passage of the fluid through the pipe.

A substrate processing apparatus includes a chamber in which a first processing space, a second processing space, a connecting space connecting the first processing space and the second processing space, a first hole connecting with the connecting space and a second hole connecting with the connecting space are formed, a first gate valve having a first valve element and closing the first hole, the first valve element sliding in the first hole, opening and closing the connecting space, and a second gate valve having a second valve element and closing the second hole, the second valve element sliding in the second hole, opening and closing the connecting space, wherein a region in which the first hole and the connecting space connect with each other and a region in which the second hole and the connecting space connect with each other are one common region.

A vacuum slide gate valve with a drive unit that is formed in such a way that a closure plate, by displacement of at least one valve rod along a longitudinal axis, is displaceable from an open position into an intermediate position, and, by displacement of said valve rod along a transverse axis running at right angles to the longitudinal axis, is displaceable from the intermediate position into a closing position. The valve rod is rigidly connected to a sliding part, which is guided between a first position and a second position parallel to the longitudinal axis, and between the second position and a third position parallel to the transverse axis. A displacement member is mechanically coupled to the sliding part via an inclined connection to displace the sliding part from the first position into the second position and from the second position into the third position.

The invention relates to a vacuum valve (10) for the substantially gas-tight closure of an opening defining an opening axis, comprising a closure element (14) having a closure side and a coupling unit arranged on a rear side opposite the closure side, and a valve wall having valve seat (12a) surrounding the opening. The valve further comprises a linear drive unit by means of which the closure element (14) is adjustable in at least two adjustment directions substantially orthogonally to the opening axis along an adjustment axis and thus the closure element (14) is adjustable between an open position releasing the opening, an intermediate position pushed over the opening and a closed position closing the opening. The vacuum valve (10) comprises a guide for the closure element (14) associated with the opening. The closure element (14) comprises a guide element (25) interacting with the guide during an adjustment from the open position to the closed position and back, and the guide and the guide element (25) are shaped and interact in such a way that, in the course of the adjustment from the intermediate position to the closed position, a tilting of the closure element (14) transversely to the adjustment axis is initiated and/or effected in a first partial movement.

A gate valve with a locking function, includes: a housing having a first plate and a second plate, the first plate and the second plate having a valve opening penetrating therethrough respectively; a driving unit; a sliding seat having a plurality of sliding abutment members; a valve member having two cranks swingably arranged on the sliding seat; the two cranks configured to form a parallel equal crank mechanism jointly with the sliding seat and the valve member; and an elastic element; wherein when the sliding seat is at the highest position, the two cranks are of a slanted shape; when the sliding seat is at the lowest position, the two cranks are of a horizontal shape relatively to the housing.

The invention relates to a hydraulic proof test assembly comprising at least a valve (1) with parallel seats (102). It comprises:

a shut-off member (2) with parallel plates (20, 21), connected by connecting means for regulating their separation, to make them go from a first position in which this separation is sufficient to enable the shut-off member (2) to be introduced into said valve (1) to a second position where said separation is greater, this separation making it possible to apply them firmly against said parallel seats (102);

a device (3) for inserting said shut-off member (2) into said valve (1) which comprises at least a “U” shaped tool, configured to be introduced into said valve (1), its parallel arms forming guides, while its base forms a support for retaining said shut-off member (2);

a “dummy stem” (4).

The invention relates to a vacuum valve for the substantially gas-tight closure of an opening, comprising a closure element having a closure side and a coupling unit arranged on a rear side opposite the closure side, and a valve wall having valve seat surrounding the opening. The valve further comprises a linear drive unit enabling the closure element to be adjustable in at least two adjustment directions. The closure element is adjustable between an open position releasing the opening, an intermediate position pushed over the opening and a closed position closing the opening. The vacuum valve comprises a guide for the closure element associated with the opening. The closure element comprises a guide element interacting with the guide during an adjustment from the open position to the closed position and back.

A gate valve with a locking function, includes: a housing having a first plate and a second plate, the first plate and the second plate having a valve opening penetrating therethrough respectively; a driving unit; a sliding seat having a plurality of sliding abutment members; a valve member having two cranks swingably arranged on the sliding seat; the two cranks configured to form a parallel equal crank mechanism jointly with the sliding seat and the valve member; and an elastic element; wherein when the sliding seat is at the highest position, the two cranks are of a slanted shape; when the sliding seat is at the lowest position, the two cranks are of a horizontal shape relatively to the housing.

A chamber valve (100) for use in processes requiring vacuum pressures has a compact design which minimizes the space needed for the valve in the travel direction. The chamber valve gate (116) is moveable between a first position in which the gate is offset from the portal (110), and a second position in which the gate is aligned with the portal. The gate will move into alignment with the portal while remaining within a plane parallel or nearly parallel to the portal.