A sectional control device controls the flow of particulate material from a meter assembly to a primary manifold of an air seeding system. The sectional control device includes a plate assembly having particulate openings extending between the meter assembly and the primary manifold and a shut-off mechanism configured to control the flow of the particulate material through the particulate openings. The shut-off mechanism includes a gate configured to slide between an open position, where particulate material can flow through the particulate opening, and a closed position, where particulate material is prevented from flowing through the particulate opening. The shut-off mechanism also includes an actuator configured to drive the gate between the open position and the closed position.

A throttling flow control valve that allows to adjust an amount of flow by adjusting a size of a flow path through the valve comprises a body having inlet and outlet branch pipes with through passages, and a control element having movable regulating teeth each having an individual actuator and fixed regulating teeth. The movable regulating teeth and fixed regulating teeth each have a streamlined shape ending with a symmetrical wedge. The control element provides a throttling zone having a cross section in a shape of a multi-point star. By action of individual actuators, movable regulating teeth move on fixed regulating teeth, which results in efficient flow control due to varying of the throttling zone area.

An adjustment device includes a body, an adjustment inner gear ring, and an adjustment shaft. The body has a cavity therein, has a first end provided with a first hole and a second hole, and has a peripheral wall provided with a third hole. The first hole, the second hole, and the third hole are connected with the cavity. The adjustment inner gear ring is fitted in the cavity, and has a peripheral wall provided with adjustment holes. The adjustment holes have different cross-sectional areas. A second end of the adjustment shaft has an adjustment gear and passes through the second hole into the cavity. The adjustment gear meshes with the adjustment inner gear ring. The adjustment shaft is rotatable to drive rotation of the adjustment inner gear ring so as to enable the third hole to be connected with the cavity through one of the adjustment holes.

An obturator element is disclosed with a petal shaped structure. The petal shaped structure can include a first edge portion along a first section of an outside circumference of the petal shaped structure and a second edge portion along a second section of the outside circumference of the petal shaped structure. The second edge portion can include an insert with a partial surface positioned toward a first side of the petal shaped structure corresponding to a source direction of intended fluid flow. The insert can include a full surface positioned toward a second side of the petal shaped structure. The second edge can include a second mating surface at least partially formed by the insert. The petal shaped structure can include a control connection portion and a hinged connection portion. The obturator element can pivot about the hinged connection portion by movement of the control connection portion.

In accordance with at least one aspect of this disclosure, a flow control device can include, a first plate having one or more windows defining a flow path therethrough, a second plate configured to abut the first plate, and an actuator operatively connected to one or more of the first plate and/or the second plate. The actuator can be configured to drive the first plate and/or the second plate relative to one another to enlarge or reduce the flow path through the one or more windows in the first plate.

A system, including a first flow control element configured to couple to a stem, and a second flow control element coupled to the first flow control element, wherein the first and second flow control elements are configured to expand relative to one another to create a seal in a closed position between a chamber and a flow path in a valve body, and wherein the first and second flow control elements are configured to enable fluid flow between the chamber and the flow path in an open position.

The present flow regulating valve relates to devices for regulating the flow parameters of working media and can be used in equipment in the gas, oil, chemical, power, metallurgical and coal industries. The present flow regulating valve comprises a housing with a regulating element having inlet and outlet pipes with through passages and movable and immovable regulating teeth having a streamlined shape and terminating in a taper, wherein the size of the angle of the tapered portion is defined as 360/n, where n is the number of movable teeth. What is novel is that each tooth has an independent actuator, the immovable teeth have a cross section in the shape of an isosceles triangle, and the regulating zone has a cross section in the shape of a multi-point star. This design provides excellent characteristics in terms of response time and the overall weight of the structure, which is particularly relevant in the case of regulators having a cross-section diameter of 500 mm or more.

An apparatus for vacuumizing and sealing a package includes a plurality of platens and vacuum chambers, each chamber adapted to mate with a dedicated one of the platens; a conveying system for conveying the platens and chambers along a generally angular path having a single axis of rotation; an automated loading assembly having a linear component and configured to load a package onto each of the platens; an automated unloading assembly having a linear portion and configured to unload a vacuumized, sealed package from each loaded platen onto an outfeed conveyor; and a vacuumizing/sealing system configured to cause relative movement of each chamber/platen pair, along a portion of the angular path, to form therebetween an air-tight enclosure accommodating the package and effect vacuumization and sealing of the package.

A valve flap assembly for an exhaust-gas valve has a first valve flap provided for closing a first flow cross-section and a second valve flap provided for closing a second flow cross-section. The second valve flap is mounted for swiveling movement relative to the first valve flap. In addition, a valve arrangement for an exhaust system is presented which comprises such a valve flap assembly. Furthermore, an exhaust system for an internal combustion engine of a vehicle is presented, which comprises such a valve flap assembly and/or a valve arrangement. A vehicle having such an exhaust system is also disclosed.

An intervention package for servicing a subsea well has an emergency disconnect package mountable to a riser and a lower riser package connectable to the subsea well. One or more compact cutting devices are utilized on the lower riser package. The intervention package can be used without a BOP. The compact cutting device has a throughbore going through the body that is connectable to the wellbore. Mounted in the body are two gates that are continuously in contact with each other. Each gate has a blank portion and an opening. For each gate, a piston and piston chamber are on the opposite side of gate from the bore that goes through the body.