Abstract:
A valve arrangement (10) includes a valve housing (12) that defines a product passageway (16) and a valve seat within the product passageway (16). A valve wedge (30) is disposed within the housing passageway, and moves along a direction of operation between a closed position and an open position. A pair of opposed wings (46, 48) are carried on the valve wedge (30), adjacent a guide track (56, 58). Rollers (62) are carried on the wings (46, 48) for rolling engagement with the tracks (56, 58) and scraper blades (70, 79) are carried on the wings (46, 48) adjacent the rollers (62) to scrape contamination from tracks (56, 58).
Abstract:
Disclosed is a slide valve (10) suitable for very high temperature service, having a liner of refractory material and a wedging system with wedges (22) wedging a disc (18) against an orifice plate (16). The slide valve (10) is also desirable for use under lower temperatures as the wedge system firmly wedges the disc (18) into stable sealing engagement with the orifice plate (16), closing the orifice (16) under flow conditions.
Abstract:
A high vacuum valve assembly having a valve body (104) with an air chamber (108) formed therein. A gate unit (150) is disposed within the air chamber (108) and includes a valve gate (165) disposed to mate to a valve seat (105), the valve gate (165) and the valve seat (105) each being disposed at the same angle to provide increased sealing force. The gate unit (165) is urged into closure against the valve seat (105) by a spring (116) and away from the valve seat (105) by a compressed gas such that the gate unit (165) is the only moving part of the valve.
Abstract:
A valve member (40) includes a wedge shaped obturator (42) having sealing regions (46, 48). Below dashed lines A1-A1/A2-A2, the obturator comprises a part-circular-cylindrical outer surface with the axis of the cylinder extending perpendicularly to a stem (12) and inclined planes (43, 44) being tangential to the outer surface. A butt seal region (50) of the obturator includes a central region (52) which extends parallel to the axis of the cylindrical surface. Adjoining regions (54, 56, 58, 60) extend from the region (52) across the cylindrical surface, obliquely to the axis thereof, so as to meet the sealing regions (46, 48). Thus, faces of the wedge above lines A1-A1/A2-A2, blend into the cylindrical surface below the line so that there is a smooth transition between sealing regions (46, 48) and the butt seal region (50). In another embodiment described, an obturator includes two part-circular-conical surfaces spaced apart by an arcuate surface instead of the part-circular-cylindrical outer surface of valve member (40).
Abstract:
Ventil (1), insbesondere Vakuumventil, mit zumindest einem Verschlussorgan (2), welches einen keilförmigen Verschlussbereich (3) aufweist, und mit zumindest einem, eine Ventilöffnung (4) des Ventils (1) umgebenden, Ventilsitz (5), wobei der keilförmige Verschlussbereich (3) in einer Schließstellung des Verschlussorgans (2) abdichtend an dem Ventilsitz (5) anliegt und die Ventilöffnung (4) verschließt und in einer Offnungsstellung die Ventilöffnung (4) für ein Hindurchtransportieren von Fluiden und/oder Festkörpern durch die Ventilöffnung (4) freigibt, wobei das Verschlussorgan (2) mit dem keilförmigen Verschlussbereich (3) zwischen der Schließstellung und der Öffnungsstellung auf einer Bewegungsbahn (6) hin und her bewegbar gelagert ist, wobei die Bewegungsbahn (6) in sich abgewinkelt und/oder gebogen ist.
Abstract:
In order to prevent the available problems regarding gate valve rusting, corrosion and sedimentation, an full-polymer gate valve is designed which has a much higher resistance toward corrosion and rusting while being used for fluid flow switching. Furthermore, when a gate valve is needed to be buried deep in the ground, the valve is connected to the gate valve with a long handle for fluid flow switching and we do not need to dig a special hole for switching flow. Meanwhile, pipe connection to the gate valve is designed directly in different manners and no kind of adaptor is separately required while connecting the pipes.
Abstract:
Ventil (1), insbesondere Vakuumventil, mit zumindest einem Ventilgehäuse (2) und zumindest einem Verschlussorgan (3) und zumindest einem Ventilsitz (4), wobei der Ventilsitz (4) zumindest eine Ventilöffnung (5) des Ventils (1) umgibt und das Verschlussorgan (3) von zumindest einem Verschlussorganantrieb (6, 7) zwischen zumindest einer Öffnungsstellung, in der das Verschlussorgan (3) die Ventilöffnung (5) zumindest teilweise freigibt, und einer Schließstellung, in der das Verschlussorgan (3) mit einer Dichtfläche (8) des Verschlussorgans (3) zum Verschließen der Ventilöffnung (5) an den Ventilsitz (4) angedrückt ist, hin und her bewegbar ist, wobei zumindest eine Oberfläche (9) des Ventils (1) eine gemittelte Rautiefe RZ kleiner oder gleich 0,4 um, vorzugsweise kleiner oder gleich 0,25 um, aufweist.
Abstract:
The valve, according to the invention, has a body (1) with an inlet port (2) and an outlet port (3), a-socket (4) provided in the body (1) with surfaces of which the wedge (5) cooperates, a closing cover (7) connected to the body (1), in which a spindle (6) is mounted sealed with a gland (8). At the outer side the spindle (6) is controlled in a rotational manner, and at the opposite side it is connected to the wedge (5). The socket (4) of the body (1) is provided with a front slot (11') and a rear slot (12'), and the wedge (5) is provided with a front rib (11) and a rear rib (12) made of elastic material, wherein the front rib (11) cooperates with the front slot (I I') of the socket (4) of the body (1), and the rear rib (12) cooperates with the rear slot (12') of the socket (4) of the body (1).
Abstract:
Изобретение относится к трубопроводной арматуре, к отключающим устройствам с запорными элементами и предназначено для использования в отраслях промышленности, связанных с транспортированием жидких и газообразных сред под давлением в районах с умеренным и холодным климатом. Задвижка клиновая с выдвижным шпинделем содержит корпус (1), в котором опосредованно размещен с возможностью продольного перемещения шпиндель (4). Последний оснащен на одном конце клином (3), а на другом конце элементом управления. Седла (2) выполнены за одно целое с патрубками. В корпусе (1) размещена и закреплена посредством накидного элемента (8), стойка (6), выполненная в виде втулки, внутренняя и наружная цилиндрические поверхности которой выполнены ступенчатыми. На ступени внутренней ее поверхности со стороны клина (3), выполнены направляющие (5). На ступени расположенной со стороны элемента управления, размещен уплотнительный элемент (9), втулка сальниковая (10) и резьбовая втулка (11), закрепленные контргайкой (12). Шпиндель (4) имеет возможность вращения.