An exhaust gas recirculation valve device for a vehicle includes: a valve housing having an exhaust gas inlet port and an exhaust gas outlet port; a flap valve rotatably mounted on the valve housing to open and close the exhaust gas outlet port; a valve shaft fitted to penetrate the flap valve and coupled to the flap valve so as to rotate integrally with the flap valve; a lever in which one end of the valve shaft is fitted to penetrate; a spring fixed at the lever and mounted on an exterior circumferential surface of the valve shaft; a bush inserted into the exterior circumferential surface of the valve shaft between the spring and the flap valve in a shaft direction; and a thrust washer installed between the flap valve and the bush.

Disclosed herein are embodiments of a value assembly, methods of manufacturing the same, and methods of using the same. In one embodiment, a sensor assembly comprises a housing having a through-bore, a first flap coupled to a first shaft and a second flap coupled to a second shaft, wherein the first shaft and the second shaft are coupled within the housing; and one or more gear assemblies coupled to the first shaft and the second shaft, wherein the gear assemblies are configured to rotate the first flap and the second flap from a first position to a second position to prevent a flow from traversing through the through-bore, and from the second position to the first position to allow the flow to traverse through the through-bore.

A rotary control valve that includes a valve body, a valve shaft disposed within a bore of the valve body, a first valve seat disposed within the valve body, a first control element carried by the valve shaft, and a first pressure labyrinth at least partially defined by the first control element. The first control element is movably disposed in the first opening between a closed position, in which the first control element sealingly engages the first valve seat, thereby closing the first opening, and an open position, in which the first control element is spaced from the first valve seat, thereby opening the first opening. When the first control element is in the closed position, the first pressure labyrinth is configured to cause a pressure drop in fluid flowing therethrough, thereby minimizing an internal leak rate of the rotary control valve.

In a throttle device including: a throttle shaft to which a throttle valve is secured; a motor; and a deceleration mechanism decelerating rotation of a drive shaft of the motor and transmitting the rotation to the throttle shaft, the deceleration mechanism includes a throttle gear secured to the throttle shaft, the throttle gear includes a tubular ring into which the throttle shaft is detachably inserted and a gear main body including a gear portion, and the gear main body is formed of a resin by insert processing including the ring.

An electromechanical actuating drive (1) for a bulk-goods shut-off element, comprising an electric motor (2) and a control and drive electronics unit (3) associated with the electric motor (2), wherein the electromechanical actuating drive (1) comprises a mechanism for storing energy.

Segment isolating valves assembled on the lower back of the elevated guideway (1), the plug base (2) being hinged on a housing (3) fixed to the elevated guideway (1) by a flange (4) for fast connection and disconnection. The housing (3) is equipped with a rainwater runoff tank (5). The segment isolating valve comprises a plug (2) mounted in a housing (3) affixed to the elevated guideway by means of a flange (4) for fast connection and disconnection. The plug (2) is moved by means of a linear actuator (6), whose rod exerts force on an articulation (7), which is pivoted above on the plug (2) and below on a frame (8) affixed to the housing base (3). The assembly is mechanically locked through a closed position locking cam (9), displaced automatically by springs (10). A safety locking pin (11) is actuated by a release solenoid (12).

An airflow valve may comprise a plate assembly located inside an airflow conduit. An actuator may attached to, and/or otherwise fixed relative to, a plate of the plate assembly. The actuator may be coupled to the airflow conduit. If activated, the actuator may react against the airflow conduit to induce rotation of the plate.

A method and apparatus for the separation of gas and liquid-solid slurry under pressure, and passage of the liquid-solid slurry to an atmospheric discharge.

A valve having an active 10 and passive 12 valve portion that are complementarily shaped such that the passive 12 valve portion can be received by and mated with the active 12 valve portion. Each valve portion has a generally cylindrical valve body 14, 16 complementarily shaped with respect to one another such that the passive 12 valve portion may be received by the active 10 valve portion. Each valve portion has a valve closure member 18, 20 in the form of a circular planar disc rotatably mounted in the housing via means of one or more spindles, 22, 24 and 22′, 24′. The valve portions have a number of configurations whereby they can be partially engaged such that the valve portions may be separated to form a channel or chamber between valve closure members or fully engaged such that chamber or channel is closed such that the valve closure members are proximally disposed to one another and the valve may be opened or closed to permit the passage of material therethrough.

A rotary control valve that includes a valve body, a valve shaft disposed within a bore of the valve body, a first valve seat disposed within the valve body, a first control element carried by the valve shaft, and a first pressure labyrinth at least partially defined by the first control element. The first control element is movably disposed in the first opening between a closed position, in which the first control element sealingly engages the first valve seat, thereby closing the first opening, and an open position, in which the first control element is spaced from the first valve seat, thereby opening the first opening. When the first control element is in the closed position, the first pressure labyrinth is configured to cause a pressure drop in fluid flowing therethrough, thereby minimizing an internal leak rate of the rotary control valve.