Abstract: An integrated pressure regulator is provided with three stages configured to reduce an extreme tank pressure down to a typical working pressure. The regulator is configured to supply a steady working pressure until the tank pressure is reduced to little more than the working pressure itself. Stages of the pressure regulator are integrated into a body and arranged to minimize regulator mass and volume. A thermally-triggered pressure relief device may be included with a triggering time adapted to enhance the safety of smaller cylinders that may be used, e.g., in aerial applications.

Abstract: Current natural gas measurement and regulation systems are sensitive to loss of electrical power, which can cause brownouts and curtailment of power in the local area if power systems reliant on natural gas are downstream from the station. A system for regulating the flow of natural gas and for guaranteeing the flow of natural gas from a source to at least one specific flow line even when the system is not provided with electrical power may be described. Such a system may include at least one of each of: a low-pressure regulation system, a high-pressure regulation system, an inlet gas filter, a relief valve, a low select relay, a differential pressure pneumatic relay, a reset relay, a 5-way universal relay, an electromechanically operated valve, a first manual multi-way valve, a second manual multi-way valve, a high calibration valve, a low calibration valve, a filter, and/or a differential pressure measurement system.

Abstract: A gauge for a hybrid pressure and flowgauge regulator includes first indicia and second indicia. The first indicia provides an indication of a flow rate of a gas exiting an outlet of the hybrid pressure and flowgauge regulator when the gas exits with a pressure below a gauge threshold pressure. The second indicia provides an indication of the pressure of the gas exiting the outlet of the hybrid pressure and flowgauge regulator when the pressure of the gas exiting the outlet is above the gauge threshold pressure.

Abstract: Embodiments described herein relate to a pressure-regulating device, systems that include the device, and related methods. For example, the pressure-regulating device may receive gas from a gas supply at a first pressure (e.g., on a supply side of the pressure-regulating device) and may regulate or reduce the pressure of the received gas to a selected or suitable second, different pressure.

Abstract: A hybrid pressure and flowguage regulator apparatus includes a regulator body, an inlet, and an outlet assembly. The outlet assembly includes a first orifice of a first size, a second orifice of a second size that is larger than the first size, and a mechanism that automatically moves the first orifice between a first position and a second position. When the first orifice is in the first position, the flow of gas passes through both the first orifice and second orifice. When the first orifice is in the second position, the flow of gas bypasses the first orifice and flows through the second orifice with a specific flow rate or a second pressure that is less than the first pressure. The apparatus may also include a gauge that provides a visual indication of both the specific flow rate and the second pressure.

Abstract: A control valve includes a slide valve having a slide movable within a channel between a first position and a second position. When the slide is in the second position, the channel is arranged in fluid communication with an outlet line. A pressure regulator is arranged upstream from and in fluid communication with the slide valve and is operably coupled to a fluid source. The pressure regulator includes a flow metering element movable between an open position and a closed position to regulate a flow of fluid and pressure through the control valve in response to a pressure variations within the downstream slide valve.

Abstract: A plural component dispensing system includes at least one compressed gas pneumatically connected to supply pressurized gas to each of a first pressure vessel that discharges a first fluid component and a second pressure vessel that discharges a second fluid component. Each of the first fluid component and the second fluid component is supplied from the respective pressure vessel through individual flow meters to a device. A first pressure regulator is pneumatically connected between the first pressure vessel and the at least one compressed gas source to regulate pressure of the first pressure vessel. A controller receives sensed first and second volumetric flow rates from the individual flow meters and controls the first pressure regulator based on the sensed volumetric flow rates to produce a target ratio of the first fluid component and the second fluid component at the device.

Abstract: An adjustable flow-control valve is for controlling the flow from a fluid-supply unit. The control valve includes a pressure-control unit and a flow-control unit, a first inlet for connection to the fluid-supply unit, and an outlet. The pressure-control unit includes a first chamber (I) and a second chamber (II) separated by a first movable element which is cooperatively connected to a first preloading device, the first chamber being in fluid communication with the first inlet and with the flow-control unit, and the second chamber being in fluid communication with the outlet of the flow-control valve and including a second inlet in fluid communication with the flow-control unit. The flow-control unit includes a third chamber (III) and a fourth chamber (IV) separated by a second movable element which is cooperatively connected to a second preloading device.

Abstract: The invention relates to a device for regulating the flow rate and/or pressure of a fluid, such as valve for a pressure gas cylinder, comprising a reducing valve including a first plug designed to be moved in the normal flow direction of the fluid during closure. The reducing valve also comprises a plunger to which the plug is coupled. The face of the plunger that is oriented towards the first plug defines a regulation chamber together with the body. The aforementioned face also comprises a seal that engages with a corresponding surface of the body such as to form a second plug for maintaining residual pressure. The regulation device also comprises a means for preloading and releasing a spring acting on the opposite face of the plunger.

Abstract: Multi-stage back pressure regulators are disclosed herein. In one embodiment, a multi-stage back pressure regulator includes a first stage and a second stage downstream from the first stage. The first stage includes a gas-charged regulator device arranged to receive a fluid at an inlet, and the second stage includes a spring-loaded regulator device having an outlet in fluid communication with the inlet. The gas-charged regulator and the spring-loaded regulator are configured to control inlet pressure to the back pressure regulator and maximum differential pressures across the first and second stages.

Abstract: A valve unit for an aircraft is provided. The valve unit includes valve assembly; and a servo controller coupled to the valve assembly and configured to control operation of the valve assembly. At least a portion of at least one of the valve assembly or servo controller is formed by a high temperature aluminum alloy.

Abstract: Fluid-based no-moving part logic devices are constructed from complex sequences of micro- and nanofluidic channels, on-demand bubble/droplet modulators and generators for programming the devices, and micro- and nanofluidic droplet/bubble memory elements for storage and retrieval of biological or chemical elements. The input sequence of bubbles/droplets encodes information, with the output being another sequence of bubbles/droplets or on-chip chemical synthesis. For performing a set of reactions/tasks or process control, the modulators can be used to program the device by producing a precisely timed sequence of bubbles/droplets, resulting in a cascade of logic operations within the micro- or nanofluidic channel sequence, utilizing the generated droplets/bubbles as a control. The devices are based on the principle of minimum energy interfaces formed between the two fluid phases enclosed inside precise channel geometries.

Abstract: An airflow control system for controlling pressure and flow through a flow passage with an upstream portion and a downstream portion includes a valve actuator which receives electrical signals to control the opening and closing of the valve that is configured and arranged such that the system may operate in the event of loss of power.

Abstract: Fluid regulators are described. An example regulator includes a regulator body defining a sensing chamber between an inlet and an outlet of a fluid flow passageway of the fluid regulator. A bonnet is coupled to the regulator body and defines a loading chamber disposed adjacent the sensing chamber. The loading chamber is substantially sealed relative to the sensing chamber and an environment surrounding the fluid regulator. A sensor guide is disposed between the sensing chamber and the loading chamber and has at least one seal to fluidly isolate the loading chamber from the sensing chamber. The sensor guide has a vent flow path between the sensing chamber and the loading chamber to vent the sensing chamber during a failure condition of the at least one seal.

Abstract: Multi-stage back pressure regulators are disclosed herein. In one embodiment, a multi-stage back pressure regulator includes a first stage and a second stage downstream from the first stage. The first stage includes a gas-charged regulator device arranged to receive a fluid at an inlet, and the second stage includes a spring-loaded regulator device having an outlet in fluid communication with the inlet. The gas-charged regulator and the spring-loaded regulator are configured to control inlet pressure to the back pressure regulator and maximum differential pressures across the first and second stages.

Abstract: A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include a fuel regulator valve including a main pressure regulator to regulate the fuel pressure, at least one auxiliary pressure regulator, a first fuel source connection for connecting the first fuel type to the heater assembly, and a second fuel source connection for connecting the second fuel type to the heater assembly. The one or more auxiliary pressure regulators introduce a backline pressure to the main pressure regulator, thereby adjusting the fuel pressure to fall within a predetermined range.

Abstract: A gas releasing and/or regulating mechanism is equipped with a body (1) with a passage, a gas intake (2) and outlet (3), the intake and outlet being connected to the passage; elements to block (5, 6, 7, 8) the passage; mobile elements (9) which associated to the body (1) of the mechanism, define a low pressure chamber (11) below the blocking elements (5, 6, 7, 8), the mobile elements (9) operating the blocking elements (5, 6, 7, 8) depending on the pressure within the low pressure chamber (11). The blocking elements (5, 6, 7, 8) are made of a first shutter (5, 6) and a second shutter (7, 8) below the first in the passage; and the first and second shutters (5, 6, 7, 8) are mechanically connected so that the first shutter (5, 6) closes before the second one (7, 8).

Abstract: A high pressure regulator for compressed gas weapons, and in particular for paintball markers, is situated inside a cylindrical regulator housing which is connected to a source of compressed gas. The cylindrical regulator housing comprises an inlet channel which is connected to a supply of high-pressure gas. A first regulator (H) comprises a first piston movably disposed within the regulator housing for regulating pressure in a first expansion chamber. A second regulator (D) comprises a second piston movably disposed within the regulator housing for regulating pressure in a second expansion chamber. The first piston and the second piston are arranged coaxially within the regulator housing. The high pressure regulator is suitable to be mounted in the foregrip of a paintball marker and reduce an inlet pressure of about 850 psi to a first pressure of about 250 psi and a second pressure of about 100 psi.

Abstract: A multi-stage fluid pressure regulator, including a first stage valve arranged to open and close a fluid flow path to control flow of fluid through the valve, a first stage piston arranged for movement to open and close the first stage valve, the piston having an inner side and an outer side, a gas delivery conduit having a proximal end attached to the first stage piston and a distal end extending away from the first stage piston, the gas delivery conduit having a passage in fluid communication with the inner side of the first stage piston, and a second stage valve in fluid communication with the gas delivery conduit, the second stage valve including a second valve chamber into which the distal end of the gas delivery conduit is positioned.

Abstract: A fluidic control system includes featured layers. The featured layers include two or more features which collectively form at least one functional component.

Abstract: A pressure control valve assembly for containers adapted to contain compressed and liquefied gases, comprising a valve body that can be applied to a container for gases and the like, in which a first duct for the gas in output from said container and a pressure regulator device connected to the inside of said container and to said first duct are defined, said pressure regulator device being fully placeable within said container, said regulator device comprising at least one regulator of the piston type.

Abstract: A two-stage regulator having a piston situated in a first stage for substantially reducing high pressures introduced into the regulator. The reduced pressure is exerted against the second stage that includes a plunger-actuated diaphragm that urges an actuator to open a ball valve at a selected pressure to allow fluid to flow out of the regulator at a desired reduced pressure.

Abstract: Multi-stage back pressure regulators are disclosed herein. In one embodiment, a multi-stage back pressure regulator includes a first stage and a second stage downstream from the first stage. The first stage includes a gas-charged regulator device arranged to receive a fluid at an inlet, and the second stage includes a spring-loaded regulator device having an outlet in fluid communication with the inlet. The gas-charged regulator and the spring-loaded regulator are configured to control inlet pressure to the back pressure regulator and maximum differential pressures across the first and second stages.

Abstract: A fluid flow control valve is disclosed. This valve includes a housing which defines a central passageway having fluid inlet and fluid outlet openings. A pressure responsive element is disposed within the passageway for selectively opening and closing the inlet opening to fluid flow in response to fluid pressure exerted thereon at the inlet opening. A mechanism is provided within the passageway for exerting a bias force against the pressure responsive element which is sufficient to close the inlet opening to fluid flow absent a pre-established level of fluid pressure exerted on the pressure responsive element. A fluid filter element is also disposed within the passageway; and a retainer device is positioned for removably securing the filter element within the passageway.

Abstract: A multi-stage pressure regulator system. The system of the present invention provides for distribution of the Joules-Thomson (J-T) cooling effect between multiple stages. In the preferred embodiment of the present invention, the pressure is first reduced by a set ratio in one or more stages followed by an adjustable pressure output stage. The present invention thereby provides a system to control pressure reduction and thus prevent condensation (and associated distortion of a vapor composition sample) of a gas due to J-T cooling effect. The system of the present invention is particularly suitable for use placement (via, for example, a probe) within the source gas supply containment vessel, pipeline or the like, so that pressure reduction occurs at or near isothermal conditions, further lessening the likelihood of J-T condensation.

Abstract: Multifunctional safety valve device with proportional pressure regulator, for line feeding aeriform fluid to a user, including a body defining a fluid or gas conduit connected to a gas feed line and a gas delivering line. The conduit has first and second passages intercepted by respective first and second valving elements. The second element downstream of the first for gas pressure regulating and modulating. The valving elements operated by electromagnetic actuators and urged closed at least by a spring. The second element cooperating with a membrane subjected to gas pressure to urge the second element closed. The membrane has, subjected to gas pressure, a surface larger than that of the second element subjected to the same pressure, to maintain the second element closed. The second element presenting, downstream of the second passage, a portion with a flexible rim arranged to seal the second passage when intercepted by the second element.

Abstract: Two-stage and three-stage regulators having a piston situated in a first stage for substantially reducing high pressures introduced into the regulator. The reduced pressure from the first stage is exerted against a second-stage valve in a two-stage embodiment, and against an additional third-stage valve in a three-stage embodiment, each valve of which includes a plunger-actuated diaphragm that urges an actuator to open a ball valve at a selected pressure to allow fluid to flow out of the regulator at a desired and much-reduced pressure.

Abstract: A high pressure regulator for compressed gas weapons, and in particular for paintball markers, is situated inside a cylindrical regulator housing which is connected to a source of compressed gas. The cylindrical regulator housing comprises an inlet channel which is connected to a supply of high-pressure gas. A first regulator (H) comprises a first piston movably disposed within the regulator housing for regulating pressure in a first expansion chamber. A second regulator (D) comprises a second piston movably disposed within the regulator housing for regulating pressure in a second expansion chamber. The first piston and the second piston are arranged coaxially within the regulator housing. The high pressure regulator is suitable to be mounted in the foregrip of a paintball marker and reduce an inlet pressure of about 850 psi to a first pressure of about 250 psi and a second pressure of about 100 psi.

Abstract: Multi-valve autoregulatory microfluidic devices and methods are described. The described devices and methods offer improved performance and new means of tuning autoregulatory effects in microfluidic devices.

Abstract: Multi-stage fluid regulators are described. An example fluid regulator includes a regulator body having an inlet in fluid communication with a source of pressurized fluid. A first fluid valve is disposed within the regulator body and coupled to the inlet to regulate a pressure of the pressurized fluid at the inlet. A second fluid valve is disposed within the regulator body and coupled to the inlet and, via a passageway, to the first fluid valve. The second fluid valve is to cause a fluid pressure in the passageway to be regulated to a predetermined portion of the pressure of the pressurized fluid at the inlet.

Abstract: The present invention provides a pressure reducing valve. The pressure reduction valve includes a main body, an inlet, an outlet, a stem, a main seat, a pilot diaphragm, a main head, and a control spring. The pressure reduction valve includes additional auxiliary seats with corresponding auxiliary heads and displacement members/surfaces. The pressure reduction valve additional includes auxiliary seats with corresponding auxiliary heads and displacement members/surfaces enables stage wise opening of the secondary seats and the main seat. This enables to meet highly varying media flow demands using single pressure reduction valve, having less hunting effect and eliminating use of multiple pressure reduction valves.

Abstract: Provided is a two-stage valve including a housing fitted with an inlet port extending to an inlet chamber and configured for coupling to an upstream liquid supply line, and an outlet port extending from an outlet chamber and configured for coupling to a downstream supply line; a high flow-rate path extending between the inlet chamber and the outlet chamber fitted with a hydraulic element configured for selectively admitting liquid flow therebetween at a demand position defined by substantially high flow; and a pressure regulating unit configured for controlling a pressure regulating flow path providing direct or indirect flow communication between the inlet chamber and the outlet chamber for allowing liquid flow therebetween at a leak position defined by substantially low flow rates.

Abstract: A gas regulator includes an actuator, a regulator valve, and a secondary device. Downstream pressure feedback is provided to the actuator and the secondary device via a Pitot tube disposed within an outlet of the regulator valve. The Pitot tube has a first branch having an end connected to the actuator to place the actuator control cavity and diaphragm in fluid communication with downstream pressure within the outlet for maintaining the outlet pressure at an actuator setpoint pressure. The Pitot tube also has a second branch having an end connected to the secondary device to place the interior of the secondary device in fluid communication with downstream pressure within the outlet for responding to changes in the downstream pressure when the outlet pressure diverges from a predetermined normal operating pressure range.

Abstract: A gas regulator includes an actuator, a regulator valve, and pressure loading device. The pressure loading device provides a pressure load to a surface of a diaphragm of the actuator to act against a downstream pressure being applied to the opposite surface of the diaphragm and being controlled by the regulator. As the downstream pressure varies and the diaphragm displaces to move a control element to regulate the downstream pressure, the pressure loading device maintains a specified load pressure. The regulator may further include a balanced trim applying a balancing force to offset a force of an upstream pressure on the control element.

Abstract: A multi-stage pressure regulator in which pressure is first reduced by a set ratio in one or more stages followed by an adjustable pressure output stage. The system of the present invention provides for distribution of the Joules-Thomson (JT) cooling effect between multiple stages. The present invention thereby provides a system to control pressure reduction and thus prevent condensation (and associated distortion of a vapor composition sample) of a gas due to J-T cooling effect.

Abstract: The present invention relates to a drainage device comprising: an internal chamber; at least one inlet port and at least one outlet port communicating with the internal chamber; a shutter disposed at least in part in the internal chamber; at least one first valve seat associated with the inlet port, the shutter being capable of bearing against the first seat in order to isolate the inlet port from the outlet port, in particular when the pressure difference between the inlet and outlet ports is less than a predetermined first opening pressure; and at least one flow constriction associated with the outlet port, the shutter being capable of shutting said constriction, while allowing a minimum, safety flow to pass at a rate that is greater than or equal to 2.5 mL/h even in a maximally-shut position, referred to as a “closed” position, which position is reached in particular for pressure differences between the inlet and outlet ports that are greater than or equal to a predetermined closure pressure.

Abstract: The present invention provides an integral cantilever monitoring device for a regulator having a positionable vent port that may be disposed proximate the lowest point of the monitoring device to allow drainage of liquids accumulating within the monitoring device due to humidity and precipitation. The monitoring device may also include a connection module allowing the monitoring device to be rotated independently of the actuator and valve body of the regulator to accommodate varying installation environments. The connection module may further include an inlet port for connection to a downstream pressure feedback line when the regulator valve body and connection module portions of a primary downstream pressure feedback passage are out of alignment due to rotation of the monitoring device.

Abstract: A flow regulator valve having multiple stages is described herein. The flow regulator valve provides a base amount of propane when the engine is idling and provides additional propane to the engine based on the engine's requirements.

Abstract: A two-stage regulator having a piston situated in a first stage for substantially reducing high pressures introduced into the regulator. The reduced pressure is exerted against the second stage that includes a plunger-actuated diaphragm that urges an actuator to open a ball valve at a selected pressure to allow fluid to flow out of the regulator at a desired reduced pressure.

Abstract: The invention relates to a pressurized gas dispensing device such as a tap, which includes a first end, to be placed in the opening of a pressurized gas storage tank, and a second end, including a connection interface selectively connectable to a device for controlling the filling and/or withdrawal of gas from the tank, the dispensing device including an internal gas circuit having an upstream end connecting inside the tank and a downstream end to be connected to said filling and/or withdrawal control device, the internal circuit including in series, upstream to downstream, a pressure regulator and a downstream insulation valve, the portion of the internal circuit located between the pressure regulator and the downstream insulation valve defining a so-called low-pressure chamber, the dispensing device; being characterized in that the connection interface includes at least one safety lock selectively movable between a first rest position, wherein the lock shapes the connection interface into a first configurat

Abstract: Disclosed is a cylindrical, single-component two-stage regulator for controlling a pressure and a flow rate of a gas. The regulator includes a housing for holding the two stages having an ingress adapted for connection to a source of gas at a high input pressure and an egress adapted for supplying gas at a lower output pressure than the high input pressure; a first stage for reducing the pressure of the gas from the high input pressure to a fixed intermediate pressure; and a second stage for reducing the pressure of the gas from the fixed intermediate pressure to the lower output pressure and regulating the flow rate of the gas out of the egress. One application of the present invention is for use in scuba (Self-Contained Under-water Breathing Apparatus) applications, where it replaces the traditional two-component user-adjustable regulator. The regulator may be made out of stainless steel, and is small enough to fit into a user's mouthpiece.

Abstract: A multistage, pilot-operated pressure regulator for pressure adjustment and/or back pressure relief and/or differential pressure or flow control applications comprises a diaphragm and a plurality of plates, including a throttle plate and at least one flow control plate. In at least one embodiment, the throttle plate includes a sloped upper surface for contacting the diaphragm, and a plurality of apertures residing within a plurality of concentric rows. In addition, in at least one embodiment, at least one flow control plate is positioned downstream of the throttle plate, the at least one flow control plate including a plurality of apertures residing within a plurality of concentric rows. A method of controlling the flow of fluid in a conduit is also provided.

Abstract: A Gas regulator capable of reducing the pressure of a gas supply from thousands of psi to as low as 30 psi with an accuracy level of +/?1 psi. The regulator uses at least two oppositely oriented gas stages to reduce the pressure. The first stage performs gross pressure reductions and subsequent stages perform fine pressure reductions. The regulator easily connects to commercially available gas bottles and can easily activate or deactivate gas flow without needing to disconnect the gas bottle. The regulator has a compact design and can provide readings which can be integrated into computer, online, or dynamic systems.

Abstract: A pressure regulator is disclosed wherein multiple valve stages are used to accommodate low flow rates and to maximize a turn-down ratio of the regulator.

Abstract: A two stage air regulator is disclosed wherein both stages are contained in a single billet, extruded, or machined housing. The first stage receives an input pressure of about 5000 PSI from an air tank or other source. The first stage reduces the pressure which is received by the second stage having a user adjustable output of between 0 PSI to about 150 PSI. Further, the output of the second stage is received by a pneumatically operated tool such as a nailer or other tool that operates in the output pressure range.

Abstract: A pneumatic controller for controlling a device.

Abstract: A gas pressure regulator (100) includes a mechanical primary stage (102), preferably including a spring valve, and an electronic secondary stage (104), preferably including a micromachined pressure regulator, the combination of the mechanical primary stage and the electronic secondary stage suitable for relatively precise low pressure near zero flow rates with reasonable energy consumption rates, such as encountered when supplying fuel to a low power fuel cell system.

Abstract: It is an object of this invention to provide a gas fuel supply system in which a controllable range in the fuel injection quantity control by an injector is enlarged. According to one preferable aspect of this invention, the gas fuel supply system comprises an injector provided in an intake pipe of an internal combustion engine, a fuel supply passage for supplying the gas fuel to the injector, and means for controlling pressure of the gas fuel supplied to the injector through the fuel supply passage by using negative pressure in the intake pipe such that the pressure of the gas fuel increases if the negative pressure in the intake pipe decreases, and the pressure of the gas fuel decreases if the negative pressure in the intake pipe increases.

Abstract: A device for regulating a flow of gas toward user equipment, which comprises a first regulation stage and a second regulation stage arranged downstream in a direction of flow of the gas to be controlled, further comprising a flow limiter interposed between the first and second regulation stages and adapted to intervene if the second stage malfunctions.

Abstract: A pressure regulating system having a tamper-proof safety feature. A pair of seats are mounted to an annular pipe. A first bleed pipe, with a fixed restriction, extends from an inlet conduit to a first chamber. The first chamber is separated from a second chamber by a second diaphragm. A second bleed pipe extends from the second chamber to an outlet pipe. A bleed off mechanism is sealed within the outlet conduit and includes a compressible bellows. When compressed, which occurs when a predetermined pressure level is attained in the outlet conduit, a third seat is moved out of sealing relation with the outlet conduit and the first chamber. This creates an imbalance of the pressures in the chambers that leads to the pair of seats being moved to seal off apertures in the inlet conduit, thereby inhibiting flow into the outlet conduit.