Abstract: Method and apparatus for air flow regulation comprise a vertically oriented tube, a sail assembly positioned in the tube and moveable therewithin responsively to air flow through the tube to regulate rate of air flow through the tube and to stop air flow through the tube upon air flow rate through the tube exceeding a preselected value with a detector for sensing when the sail assembly has stopped air flow thought the tube as a result of air flow rate exceeding said pre-selected value.

Abstract: A digitally controlled current to pressure converter (CPC) and method of controlling same is provided. The method of controlling includes the step of periodically imparting symmetrically-opposed movement of a control valve of the CPC to loosen and flush accumulated silt therefrom. More particularly, the method may include the step of periodically introducing a small-amplitude symmetrically-opposed impulse to a controller that actuates a hydraulic control shaft of a three-way rotary valve. Also provided is a method of preventing malfunction due to faulty input or feedback signals received by the CPC, and a method of detecting the health status of multiple CPCs when used in a redundant configuration.

Abstract: Embodiments of the present disclosure generally relate gas lift valves for use in hydrocarbon wells for artificial lift operations. One embodiment of the present disclosure is a valve. The valve comprises a housing and a bellows disposed in the housing. A first side of the bellows is in fluid communication with an inlet of the housing, and a second side of the bellows faces a closed chamber in the housing. The valve further comprises a barrier assembly disposed in the closed chamber.

Abstract: A control valve device includes a valve block that switches the flowing direction of a working fluid supplied to and discharged from a boom cylinder and an arm cylinder (actuators). The valve block includes an actuator port connected to the boom cylinder, and a supply port, a discharge port, and a regeneration port communicating with the actuator port. A supply valve is provided between the actuator port and the supply port, and a discharge valve is provided between the actuator port and the discharge port.

Abstract: A faucet includes a spout base having a first end mounted to a mounting surface and a second end opposite the first end that includes an elbow, more than one water supply line within the spout base, and a hub containing a mixing valve. The hub includes an inlet end and an outlet end. The second end of the spout base and the inlet end of the hub connect together. The inlet end of the hub connects to the water supply lines. The mixing valve is approximately midway between the elbow and a dispensing end of the faucet.

Abstract: A fan assembly for use in a gas turbine engine includes a fan wheel and a plurality of blades extending radially from the fan wheel away from a central axis of the fan assembly. Each of the blades includes a root coupled with the fan wheel and an airfoil extending radially outwardly from the root. The blades are adapted to rotate about the central axis to push air.

Abstract: A suction port and check valve assembly for use with a pump head. The assembly comprises a port body and a check valve. The port body may have an inlet side, an outlet side, and a top, and may comprise a horizontal bore extending from the inlet side to the outlet side and a vertical bore extending from the top to the horizontal bore. The check valve may comprise a valve seat, where the valve seat rests atop the port body with only a gasket therebetween, and a valve body atop the valve seat. The port body may attach to the pump head via alignment spacers, such as springs, minimizing misalignment and resulting leaks.

Abstract: The invention relates to a flow regulating valve (1) for liquid-conducting heating or cooling systems, consisting of a housing (2) with an inlet (3), an outlet (4), and a connecting piece (13) which is arranged between the inlet and outlet and into which a pressure regulating device (14) that keeps the pressure difference between the pressure regions in front of and behind a flow regulating unit (8) arranged in the connecting piece constant and a spindle (7) with an actuating part protruding out of the housing (2) and with a first throttle element (9) located in the housing (2) are inserted, said first throttle element acting on the flow regulating unit or parts thereof.

Abstract: A method for protecting a pressure transducer from fluid pressure damage using a pressure isolation mechanism is disclosed. The method includes associating the pressure transducer with an isolation port of the pressure isolation mechanism, placing a pressurizing device for delivering fluid under pressure in fluid connection with an inlet port of the pressure isolation mechanism, and actuating the pressurizing device to cause fluid flow in the inlet port such that a free floating, fluid flow responsive valve member positioned in an internal cavity of the pressure isolation mechanism engages a seal seat therein to attain a closed position, preventing fluid flow between the inlet port and the isolation port and thus prevent overpressure in the isolation port. Hemodynamic pressure signals read with the pressure transducer may be transmitted at least in part through a body of the valve member, or a portion thereof, when in the closed position.

Abstract: The valve includes a casing arrangeable so the fluid in the passage flows over an outer side. The valve includes a piston axially slidably positionable within the casing, and the axial position regulates the fluid pressure in the poppet valve passage downstream, an annular clearance between the piston and casing. The valve includes a dynamic seal between the piston and casing to seal the annular clearance end. The valve includes a piston chamber located on the dynamic seal opposing side of the annular clearance so a leakage flow may cross the dynamic seal between the annular clearance and piston chamber. The fluid pressure in the piston chamber varies the axial position within the casing. A diversion path formed in the casing diverts fluid for the leakage flow into the annular clearance from the fluid flow in the passage, the diversion path having filter to filter debris from the diverted fluid.

Abstract: A shuttle valve has a valve body including a first valve seat defining a first fluid inlet, a second valve seat defining a second fluid inlet, and a center portion that is connected to the valve seats, the center portion defining a fluid outlet and a bore. A moveable member is moveable within the bore between a first position against the first valve seat and a second position against the second valve seat to control the flow of fluid from either of the first or second inlet to the outlet. The moveable member may be configured to have a unitary construction formed of a single component, by which a unitary shell defines a substantially hollow interior. The moveable member has a hollow interior and a weep hole for equalizing pressure between the hollow interior and exterior of the moveable member.

Abstract: The present invention provides a vacuum processing apparatus that includes gas supply means having a hard interlock of a pair of gas valves. The present invention provides a vacuum processing apparatus including: a gas supply unit that supplies gas, for performing vacuum processing using normally closed type air-driven valves, to a processing chamber where the vacuum processing is performed, the gas supply unit having an interlock function in which, when a first valve of a pair of the air-driven valves is opened, a second valve of the pair is closed, the gas supply unit including an air circuit that controls air for driving the air-driven valves, the air circuit being configured using an electromagnetic valve having a solenoid coil corresponding to each of the pair of the air-driven valves.

Abstract: A flow rotor (1), in particular a turbine wheel, having a wheel core (2) and an outer part (3) which surrounds the wheel core (2) and is connected thereto. The wheel core (2) and the outer part (3) are constructed from different materials.

Abstract: A valve includes an outer piston, an inner piston telescopically disposed in the outer piston. A cavity separates at least a portion of the inner piston and the outer piston. The valve also includes a seal disposed in the cavity and that forms an upper pressure chamber and a lower pressure chamber. A first flow space connects the lower pressure chamber with a first flow path and a second flow space connects the upper pressure chamber with a second flow path. A biasing member engages the inner and outer piston.

Abstract: A conduction riser additively manufactured onto thin metal parts, the conduction riser extending in a build direction of the thin metal part and traversing the thin metal part as the conduction riser extends in the build direction. The conduction riser transferring heat from the upper layers of additively manufactured part during manufacturing, preventing thermal deflection of the part.

Abstract: A hydraulic valve includes a biasing member for generating a biasing force to press a valve seat and a valve member. When a second hydraulic chamber has higher hydraulic pressure than a first hydraulic chamber, a hydraulic pressure difference between the first and second hydraulic chambers acts on the valve seat to separate the valve seat from the valve member against the biasing force of the biasing member so that the first hydraulic chamber and the second hydraulic chamber come into fluidal communication.

Abstract: A system is configured to generate a pressurized flow of gas comprised of a first gas having a partial pressure that varies in a predetermined manner. This may be used, for example, to simulate a previous and/or theoretical respiratory gas flow that was produced (or could have been produced) by a subject. The system is configured to deliver the pressurized flow of gas to a testing system configured to measure the partial pressure the first gas in flows of gas. This may provide an opportunity to determine the response of individual testing systems to various clinical circumstances.

Abstract: A method for distributing water from a trap primer to at least one trap. The method includes providing a trap primer having an upper chamber separated by a flexible diaphragm from a lower chamber, and having a resilient gas enclosure located in the lower chamber. Water is provided to the trap primer at a line pressure charging the upper and lower chambers. As a result of a reduction in line pressure, the diaphragm is disengaged from a valve stem opening an orifice and causing the flow of water from the lower chamber to at least one trap.

Abstract: A method comprises transporting a first stream of a carrier gas to a delivery device that contains a liquid precursor compound. The method further comprises transporting a second stream of the carrier gas to a point downstream of the delivery device. The first stream after emanating from the delivery device and the second stream are combined to form a third stream, such that the dew point of the vapor of the liquid precursor compound in the third stream is lower than the temperature of the plumbing that transports the vapor to a CVD reactor or a plurality of CVD reactors. The flow direction of the first stream, the flow direction of the second stream and the flow direction of the third stream are unidirectional and are not opposed to each other.

Abstract: An adjustable damping valve device for a vibration damper, includes a main stage valve which is controlled by a pre-stage valve which is functionally connected in series with the emergency operation valve. A pressure relief valve having the constructional form of a seat valve is arranged inside the emergency operation valve and is functionally connected in parallel with the emergency operation valve. A valve body of the pressure relief valve is formed by at least one annular valve disk.