Abstract:
A multi-port, multi-mode valve includes: a valve housing; multiple ports on the valve housing, a spacing between first and second ports being smaller than a spacing between third and fourth ports; and a stemshell positioned at least partly inside the valve housing, the stemshell having at least two channels configured for selectively coupling one or more of the ports to a selected at least other one of the ports.
Abstract:
A valve for administration of drug fluids, such as cytostatics, comprises at least one "drug inlet" for receiving a drug fluid and a "saline inlet" for receiving a neutral fluid. In a "drug position" of a valve member (300), the drug inlet is connected to an outlet (230) of the valve via a primary channel (310) of the valve member (300) and there is no connection between the drug inlet and a secondary channel (320) of the valve member (300) and no connection between the drug inlet and the saline inlet. In a priming/flushing position, the saline inlet is connected to the drug inlet via the secondary channel (320) and the drug inlet is connected to the outlet (230) via the primary channel (310).
Abstract:
A valve is provided with multiple ports joining multiple fluid conduits leading between fluid sources and fluid destinations. A central hub manifold or other control element resides within a body supporting the ports, and can rotate relative to the valve body. Fluid flow paths within the central hub or other control element are selectively aligned or not aligned with the ports. The valve indicates which ports are open or closed by providing unique marks adjacent the ports corresponding with being open or closed. When the positive marks are visible, such as through windows in a rotating structure fixed to the central hub or other control element, the corresponding ports are open. When the negative marks are visible, such as through other windows in the rotating structure, the corresponding ports are closed.
Abstract:
A cavitation reactor having a pulse valve for receiving an input fluid flow and generating a pulsed output flow that is provided to the input of a resonance chamber, such as a tube. The pulse valve uses a shaft with a number of regularly spaced lands to form fluid conduits between an input port and the output port connected to the resonance tube to cause fluid communication between the input and output ports to be regularly opened and closed, thereby producing a pulsed output that drives the formation of resonance waves in the resonance chamber. The shaft is rotated at a suitable frequency to produce cavitation bubbles that collapse in the resonance chamber without damaging the valve shaft.
Abstract:
A turbocharged engine arrangement having an exhaust gases recirculation system (38) comprising at least: • a higher and a lower pressure exhaust-side conduit (EXHP, EXLP) • a principal intake-side conduit (INT, INTLP, INTHP) connected to the intake line; and comprising a single rotary valve (39) configured to define at least • - a higher pressure exhaust gas recirculation mode; • - a lower pressure exhaust gas recirculation mode; • -a turbine by-pass mode. Also provided is a rotary valve comprising: • at least four ports openings (58a,...) • a rotary valve body (60) having a separation wall (64) extending to divide the internal volume in two separate flow chambers (52A, 52B); wherein first and second adjacent port openings may be set in communication through one of the flow chambers, while a third port is obstructed by an obstructing sector.
Abstract:
Systems, methods, and devices are described for providing a brace having an inflation control. The control directs fluid flow from an inflation component to one or more inflatable cells of the brace. The inflatable cells are independently inflated and deflated by the inflation component through the control. The control allows a user to create a fluid path between the inflation component and one of the inflatable cells by positioning the control in an orientation corresponding to the desired inflatable cells. Each inflatable cell is independently inflated and deflated in various orientations of the control.
Abstract:
A liquid sampling system includes a liquid sampling valve for transferring a liquid sample from a primary stream to a secondary stream. The liquid sampling valve includes a rotor having a movable shuttle that is in selective fluid communication with the primary stream or the secondary stream. The rotor shuttle passes through a discharge station prior to completion of the valve cycle to discharge contaminants prior to re-exposure to the primary stream.
Abstract:
The present invention relates to a selector valve for use in medical technology, in particular for use with the parenteral or enteral administration of fluids, comprising a main housing through which the fluid flows at least in some sections and an actuator accommodated in said housing that can be rotated about a central axis. The main housing comprises connecting points for the inflow and outflow of the medium and forms an actuator receptacle, which comprises a pin disposed concentrically to the central axis and a radially peripheral recess on the inside of the main housing, and the actuator comprises an operating element and a substantially hollow-cylindrical section, which accommodates the pin of the actuator receptacle at least in some sections, comprises at least one flow opening for the fluid connection of at least two connecting points, and at least one radially peripheral protrusion on the outer side of the cylindrical section, and wherein the pin of the actuator receptacle comprises at least one counter bearing for the actuator to form a sealing surface in the region of at least one connecting point. The invention is characterized in that the surface of the selector valve coming in contact with the fluid is produced at least in some sections from an antiseptic or antimicrobial material.
Abstract:
Bei einer schaltbaren Solarheizeinrichtung für eine Gasturbine mit Kompressor, mit einem Ventil (4) zur wahlweisen Überbrückung einer Solarheivorrichtung (5.1, 5.2), welche zwischen einer Kompressorstufe (1) und einer Turbinenstufe (3) der Gasturbine angeordnet ist, ist das Ventil als 4-Wege-Ventil mit einem mit der Kompressorstufe verbindbaren Kompressoranschluss (K), einem mit der Turbinenstufe verbindbaren Turbinenanschluss (T), einem mit einem Eingang der Solarheizvorrichtung verbindbaren Solareinlassanschluss (E) und einem mit einem Ausgang der Solarheizvorrichtung verbindbaren Solarauslassanschluss (A) ausgebildet.