A shutter valve for alternatingly allowing and stopping a high pressure water flow, such as in a device for generating energy from sea waves, comprising a tube section (201) having a rectangular cross section, wherein a multitude of vanes (202) are rotatably mounted in the tube section (201), wherein the vanes have a relatively large rectangular longitudinal cross section in a first direction, a relatively flat rectangular longitudinal cross section in a second direction perpendicular to said first direction, and a generally flat cross section in a third direction perpendicular to said first and second directions, said third direction being the axis of the vane (202), wherein the circumferential wall around the axis of each vane forms a closed water impermeable surface, wherein the axes of said multitude of vanes all extend in a parallel manner, characterized in that the distances between the axes of adjacent vanes are approximately half the distance between the outer tips of the vanes, seen in the cross section in said third direction, such that when the vanes are rotated to the closed position the lower half of the front surfaces and upper half of the back surfaces of all vanes form a single closed front surface and a single closed back surface, each in substantially a single flat plane perpendicular to the flow axis of the valve, said surfaces closing the opening of said tube section, and the other half of said front surfaces and the other half of said back surfaces of said vanes rest against each other.

An intake device includes: an intake port; and a valve body which is disposed in the intake port and is rotated around a rotation axial line between an open/closed position, in which the valve body includes a valve body main body made of a resin, an elastically deformable seal portion formed to extend along an outer circumferential portion of the valve body main body, and a projection which is provided at a surface part adjacent to a region in which the seal portion is formed in the valve body main body, and has a shape that gradually becomes tapered toward a tip end side.

An actuator provides two step control of a dual valve or dual damper, such as in an HVAC system. The gear train includes projections on top and bottom faces of the final gear, the projections being rotationally offset from each other by an angle. Each projection mates into a slot of a Geneva-gear-type output member, with two such output members accessible, one on the top of the actuator and one on the bottom of the actuator. During the portion of the throw that the upwardly facing projection is in the slot of the upwardly exposed Geneva-type output gear, the final gear rotates the upper output member to control one flow blockage member in the valve or damper. During another portion of the throw, rotation of the final gear does not rotate the upper output member, but instead rotates the lower output member and its flow blockage member.

The invention pertains to a three-way valve (1), particularly one intended to be used in an air intake circuit of a motor vehicle, comprising: a body (200) delimiting a first (2), a second (3), and a third (4) conduit, said conduits opening into a shared inner space (201), a first flap (21) capable of being moved to obstruct the first conduit, a second flap (20) capable of being moved to selectively obstruct either the second or the third conduit, a single actuator being arranged to selectively move at least one of the first and second flaps.

Embodiments of a cabin outflow valve having one or more laterally-tapered sealing surfaces are provided, as are cabin pressure controls system including cabin outflow valves. In one embodiment, the cabin outflow valve includes a frame and a first door, which is pivotally coupled to the frame and which is rotated by an actuator between open and closed positions. The first door includes, in turn, a torque input point at which the actuator applies a closing force when rotating the first door into a closed position. A laterally-tapered sealing surface extends along a lateral axis of the cabin outflow valve and has a profile height decreasing with increasing proximity to the torque input point. The laterally-tapered sealing surface helps to ensure the formation of a complete lateral seal when in the first door is rotated into the closed position to significantly reduce or eliminate leakage through the cabin outflow valve.

An actuator provides two step control of a dual valve or dual damper, such as in an HVAC system. The gear train includes projections on top and bottom faces of the final gear, the projections being rotationally offset from each other by an angle. Each projection mates into a slot of a Geneva-gear-type output member, with two such output members accessible, one on the top of the actuator and one on the bottom of the actuator. During the portion of the throw that the upwardly facing projection is in the slot of the upwardly exposed Geneva-type output gear, the final gear rotates the upper output member to control one flow blockage member in the valve or damper. During another portion of the throw, rotation of the final gear does not rotate the upper output member, but instead rotates the lower output member and its flow blockage member.

A valve for an exhaust system of an internal combustion engine includes a housing which contains a passage for conducting exhaust gases. In the passage is arranged a closing body with which the passage can be closed. The closing body is fastened in a rotationally fixed manner to a shaft, which is mounted rotatably in the housing, and can be pivoted together with the shaft about the rotation axis of the shaft. The closing body has a partition, which runs perpendicularly to the rotation axis of the shaft, and has a circular outer contour which is sealed off from the housing and divides the passage into a first duct and a second duct. When the closing body is in the closed position both the first and second ducts are closed. When the closing body is in an open position the exhaust gasses can pass through the first and second ducts.

An opening/closing valve structure for an engine is provided with a valve body for opening and closing an intake passage or an exhaust passage of the engine; a pair of bush members mounted on axial ends of the valve body; and a shaft member axially passing through one of the bush members and projecting from the bush member by a predetermined length within one end of the valve body. Each of the bush members is mounted in such a manner that a part of the bush member is axially received in an end of the valve body and the remaining part thereof axially projects from the end of the valve body. A portion of the shaft member projecting from the one of the bush members is connected to the valve body in such a manner that relative rotation of the shaft member with respect to the valve body is disabled.

A bleed valve arrangement for a gas turbine engine comprises a bleed valve housing defining a bleed duct through which a bleed flow may pass in use and a valve within the bleed duct operable between a closed position and an open position. The valve position is continuously variable between the closed position and the open position. The arrangement further comprises an ejection duct downstream of the bleed duct. The arrangement is characterised in that the ejection duct has a greater cross-sectional area than the bleed duct immediately downstream of the bleed duct so that the bleed flow experiences a sudden expansion on passing from the bleed duct into the ejection duct.

A valve unit comprises a valve (7) having a valve shaft (30) with a rotational axis, an actuator (6) for, the actuator having an actuator shaft (20) with a rotational axis, a mechanical coupler (1) for rotational coupling of the actuator shaft (20) and the valve shaft (30), the mechanical coupler (1) comprising a rotational axis (10) coinciding with the rotational axis of the actuator shaft (20) and the rotational axis of the valve shaft (30), a first rotational member (2) coupled to the actuator shaft (20) and a second rotational member (3) coupled to the valve shaft (30), and a bridge element (4), the first and the second rotational members (2, 3) having slots (21, 31) for receiving engagement pins (41) of the bridge element (4). The bridge element (4) has a planar shape extending from the first rotational member (2) to the second rotational member (3), and the planar bridge element (4) has a body (42) and at least two engagement pins (41) projecting from the body (42) at each of two of opposite ends of the body (42) of the planar bridge element (4) in a parallel direction to the rotational axis (10) of the mechanical coupler (1). The engagement pins (41) are engaging with the corresponding slots (21, 31) in the rotational members (2, 3). The planar bridge element (4) comprises at least one through-hole (43) traversing the plane of the body (42) of the planar bridge element (4) extending from the first rotational member (2) to the second rotational member (3).