Abstract: The invention generally relates to ventilation systems and methods, and more particularly to selectively configurable climate control systems and methods for use in data centers and the like. A device includes a support element and a plurality of ducts connected to the support element. The device also includes a manifold in fluid communication with each one of the plurality of ducts and a plurality of valves. Each respective one of the plurality of valves is associated with a respective one of the plurality of ducts. Moreover, there is at least one actuator operatively connected to the plurality of valves, which is structured and arranged to individually actuate each one of the plurality of valves.

Abstract: The fuel cutoff valve has a connection conduit that connects the connection hole to the approximately round shaped cross section tube passage. With the connection conduit, the connection hole and the flow path area are almost the same, and this comprises a curved passage part that makes the rising gas flow from the connection hole face in the horizontal direction, and a connection passage part that leads the gas flow from the curved passage part to the connection passage part. The fluid guide member that constitutes the curved passage part is a passage that has an inclined face that makes the rising gas flow that flows out from the connection hole face in the horizontal direction, and a passage upper surface formed from a flat surface continuous from the upper edge of the inclined face and arranged above the connection hole. The connection passage part is formed such that the cross section shape of the passage upper surface gradually faces the round shaped cross section of the tube passage.

Abstract: Valves comprise a valve body having a gallery coupled to an inlet and an outlet to facilitate a fluid flow therethrough. A plug is moveably disposed within the valve body and a seat ring assembly may be coupled to the outlet of the valve body. At least one circular motion inducement feature is positioned in a portion of the valve body, the seat ring assembly, or both. The at least one circular inducement feature is configured to induce a circular motion in a fluid flow through the valve. Methods of creating a circular flow in a fluid flowing through a valve are also disclosed.

Abstract: A valve for sealing a pipe opening with a seal plate movably attached to the pipe opening and a valve body fixed to the pipe opening. Moving the seal plate towards the pipe opening closes the valve, and moving the seal plate away from the pipe opening opens the valve. The valve body includes a plate stop to limit the movement of the seal plate relative to the pipe opening. For instance, the seal plate, when forced fully away from the pipe opening, is forced to define an oblique plane that is oblique to the plane of the pipe opening. A method of sealing and then unsealing a pipe opening incorporating such a seal plate is also included.

Abstract: A mixer for mixing and blending fluids within a vessel includes a passageway through which fluid is dispensed within the vessel and a flow diverter spaced from the passageway. Fluid impinges on the flow diverter and is directed toward the walls of the vessel. The diverter includes holes that produce jets of fluid generally parallel to the walls of the vessel to induce shear and turbulence within the fluid in the vessel.

Abstract: A controllable valve adapted to be fixed in the wall of a storage hopper containing particulate materials and operable to dispense an air blast into the interiors of the hopper to loosen the materials in the region of the valve.

Abstract: A flow controller for connection between a shower supply pipe and a shower head is disclosed which provides an intense, highly atomized spray to the shower head while reducing the amount of water used, as well as the amount of energy necessary to heat the water. The flow controller contains a controlling shaft which directs two high velocity streams of water against a wall in the flow controller to atomize the water. The controlling shaft, which is movable to provide a continuously variable control over the amount of water flowing through the flow controller, is rotated by a convenient horseshoe-shaped handle to allow the user to easily change the amount of water supplied to the shower head.

Abstract: An electrical switching circuit for a multi-phase a.c. supply uses semiconductor rectifier switches SCR1 to 5 to reversibly switch power to a multi-phase electric motor so that the motor can be run in a forward or a reverse direction. The SCRs are provided in two sets, one for switching power to forward run the motor, and the other set for reverse running of the motor. Inductor elements .DELTA.L are connected in series with the SCRs. The inductor elements comprise coils which include a non-linear permeability core, for example of ferrite or permalloy, which are operative to suppress voltage transients at switch on of the motor. These transients would otherwise produce spurious firing of the SCRs and could produce a short circuit across the input phases of the a.c. supply. The circuit is used in a valve actuator. Improved torque limit switches and position limit switches are disclosed, which operate a low voltage and which use Reed and Hall effect switches.

Abstract: Valves, in the nature of sink faucets, sill cocks, boiler drains and the like are disclosed, which embody features such as enlarged flow chambers, dams, and outflow passageways or channels designed collectively to substantially decrease the turbulence of water flow and effect improved characteristics in the type of fluid discharge, control turbulence of flow and flow direction, produce a softer controlled flow pattern, retard or decrease the Venturi action created by the fluid velocity, and dispense with the need for aerators.

Abstract: A valve in which a blade having an opening is moved between two oval-shaped seals, each having a pair of spaced circular inner seals, all housed in a valve body. One set of aligned circular seals has a central opening flanked by two opposing and aligned openings through the valve body. When the opening of the blade is positioned in alignment with the opening through the seals and the body, the valve is, of course, opened. When the opening of the blade is repositioned opposite the other set of o-shaped seals, the valve is very tightly closed.

Abstract: A tap the body of which is formed with a liquid passage having an inlet and an outlet and being provided with a valve member between the inlet and outlet to control flow of liquid therebetween characterized in that the body has a second outlet communicating with the valve member and the first outlet above the height of the first outlet when the tap is positioned for use.

Abstract: An air inlet valve having a tubular connector having an open end for admitting air to a room, a cover for regulating the quantity and direction of incoming air, and a tubular guide which telescopically engages the connector and mounts the cover for adjustment toward and away from the open end. The guide has a cylindrical wall extending less than 360.degree. to provide a radial inlet opening between the connector and the cover. The guide is frictionally engaged with the connector by a T-shaped leaf-spring. The spring is held against sideways movement by having its upright slidable in the guide and held against vertical movement by having its cross bar anchored in the connector, whereby the guide may be adjusted both circumferentially and axially relative to the connector.