Abstract: An inflation electronic control module for a tire inflation system comprising a solenoid valve disposed so as to selectively open or close fluid communication between a fluid pressure source and a vehicle tire in response to one or more pressure signals. The tire inflation system further comprising a fluid pressure sensor disposed so as to detect delivery-side fluid pressure between the solenoid valve and the vehicle tire, and provide a pressure signal corresponding to the detected fluid pressure.

Abstract: A solenoid valve system includes a supply solenoid valve, a plurality of exhaust solenoid valves, and a valve control section controlling opening and closing operation of the supply solenoid valve and the plurality of exhaust solenoid valves using PWM or PFM. The plurality of exhaust solenoid valves are disposed in parallel with each other. The supply solenoid valve and the plurality of exhaust solenoid valves have substantially identical flow rate characteristics. The number of the plurality of the exhaust solenoid valves is twice the number of the supply solenoid valve.

Abstract: A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

Abstract: There is provided a system separator having a backflow preventer including a housing enclosing a main flow conduit, a valve seat inside the housing on the main flow conduit, and a valve body movable relative to the valve seat to close off the main flow conduit together with the valve seat in a closed position and to release the main flow conduit in an open position. The valve body is alternately movable between the closed position and the open position by at least one of a pressure difference in the main flow conduit or a force of a spring element, and the main flow conduit is divided in the area of the valve body into at least one outer flow conduit and one inner flow conduit, and the valve body encloses the inner flow conduit and forms at least one valve-body valve seat on the inner flow conduit.

Abstract: A suspension control valve arrangement for a pneumatic suspension system of a commercial vehicle includes a supply port, a delivery port, an exhaust port, a service valve arrangement, and an operation control mechanism (5, 6) for switching the service valve arrangement into one of the following normal operation modes of a normal operation status: a blocking position for a blocking mode for blocking an air supply from the supply port to the delivery port, a supply position for a supply mode for supplying air from the supply port to the delivery port, or an exhaust position for a normal exhaust mode for connecting the delivery port to the exhaust port. A dump-control device (7, 11) in the housing (2) is configured for switching between the normal operation status and a quick-dump mode (IV), win which the delivery port is connected to the exhaust port by bypassing the service valve arrangement.

Abstract: A downhole valve to be used in a flow management system that comprises a valve inlet for coupling with a hydrocarbon reservoir pump outlet, a valve outlet for coupling with production tubing transport to the surface pumped hydrocarbons, a valve body with a valve body centerline that extends between the valve inlet and outlet, and a spill port for bypassing a backflow.

Abstract: Valves and medication delivery systems including valves are described herein. A valve includes a valve body and a valve element. The valve body defines a first flow path, a second flow path, and a catheter flow path. The valve element is disposed within the valve body, wherein the valve element is configured to permit fluid communication between the first flow path and the second flow path in a priming position, and is configured to permit fluid communication between the first flow path and the catheter flow path in a dispensing position.

Abstract: To prevent or reduce an oversensitive change in the degree of opening of a bleed valve regulating the flow volume of a cooling air used to heat a fuel. A gas turbine includes: a compressor compressing an air; a combustor burning a fuel mixed with the air compressed by the compressor; a turbine configured to be driven by a combustion gas generated by the combustor; a heat exchanger causing the fuel to be supplied to the combustor to be heated through a cooling air bled from the compressor to be supplied to the turbine; a bleed valve regulating the flow volume of the cooling air; a first sensor measuring a fuel state value; a second sensor measuring a cooling air state value; and a control computer controlling the degree of opening of the bleed valve.

Abstract: The flow path switching valve described herein has a valve chamber with three openings and a valve piston disposed in the valve chamber. The valve piston has a flexible diaphragm which at its circumference co-operates sealingly with an inner circumferential wall of the valve chamber. The valve piston is movable between two end positions; in a first end position, it opens a flow path between a first opening and a second opening and blocks a third opening, and in the second end position, it blocks the first opening and opens a flow path between the second opening and the third opening. The wall of the valve chamber is shaped such that in the last phase of the diaphragm movement to the first end position, the sealing contact between the diaphragm and the inner wall is undone in at least part of the circumference.

Abstract: A regulator for establishing outlet fluid pressure. The regulator includes a valve body having a fluid pressure inlet in selective fluid communication with a fluid pressure outlet. A pilot pressure inlet is formed in the valve body and in fluid communication with a source of pilot pressure. Valving structure in the valve body establishes outlet fluid pressure as a function of pilot pressure. First adjustable structure within the valve body may establish a minimum outlet fluid pressure threshold without regard to pilot pressure. Second adjustable structure within the valve body may establish outlet fluid pressure offset relative to pilot pressure.

Abstract: There is provided a valve apparatus. The valve apparatus includes a body, a closure member, upstream and downstream compartments, a closure member passage, a first fluid pressure-receiving surface fraction and a second fluid pressure-receiving surface fraction. The body includes an inlet port, a first outlet port, and a second outlet port. The closure member is configured for movement between an open position and a closed position. In the open position, the first outlet port is open. In the closed position, the first outlet port is closed. While the fluid pressure within an upstream compartment is equal to the fluid pressure within a downstream compartment, the closure member is biased to the closed position.

Abstract: An inspiratory resistor valve system (IRV) to regulate intrathoracic pressure during positive pressure breathing, spontaneous inspirations, and CPR may include an inspiratory port. The IRV system may include patient port. The IRV system may include a separate expiratory port. The IRV may include a plurality of atmospheric pressure sensitive valves. The plurality of atmospheric pressure sensitive valves may isolate the expiratory port and the inspiratory port from one another.

Abstract: The present invention relates to an inflation—deflation system comprising a reserve of air and a valve carried on board the wheel, the air being confined to the reserve under pressure higher than that of the tyre, the valve is in communication with the reserve and the tyre and comprises control means able to adopt: —a rest position in which they ensure stable and hermetic communication between the tyre and the valve; —an inflation position in which they provide communication between the tyre and the reserve, by being moved by air injected by means of an inflation electrically operated valve connected to the reserve; —a deflation position in which they provide communication between the tyre and the external air, by being moved by air injected by a deflation electrically operated valve connected to the reserve.

Abstract: An assembly having a first compressor train and a second compressor train for compressing a process fluid, wherein the first compressor train has a first drive and a first compressor, wherein the second compressor train has a second drive and a second compressor, wherein the first compressor train is not mechanically coupled to rotating parts of the second compressor train for transmission of torque, wherein the two compressors of the different compressor trains are directly connected to each other fluidically by a connecting fluid line such that the first compressor is arranged upstream of the second compressor. The first compressor compresses at a pressure ratio between 1.1 and 1.6 before the process fluid is fed to the second compressor.

Abstract: An assembly for a tire inflation system includes a valve assembly. The valve assembly includes a housing. The housing includes a base portion (56) and a cap portion (58). The base portion has a base perforation (90). The base perforation (90) is in fluid communication with a base cavity. The cap portion (58) is attached to the base portion (56). The cap portion (58) has a cap perforation (54) formed therein. The cap perforation (54) is in selective fluid communication with the base cavity. A piston (62) is disposed in the base cavity. A first area (A1) is defined by the base perforation (90), a second area (A2) is defined by the lateral area of a cylindrical space between the piston (62) and the cap portion (58), and a third area (A3) is defined by the cap perforation (54). The second area (A2) is greater than the first area (A1) and the third area (A3).

Abstract: A shock absorber reduces shocks when transitioning from a low speed region to a high speed region without impairing ride quality in an ultra-low speed region. The shock absorber includes a compression-side second damping passage connecting two chambers by bypassing a compression-side main valve opening/closing a compression-side first damping passage connecting the two chambers to give resistance to liquid flowing in the compression-side first damping passage, and a compression-side throttle valve throttling the compression-side second damping passage. The compression-side throttle valve includes a housing including a valve seat provided at one end, a case inserted in the housing enabling adjustment of a position in the housing, a valve body movably inserted at one end in the case toward the valve seat and restricted from moving to a side of the valve seat in the case, and a coil spring biasing the valve body to the side of the valve seat.

Abstract: A compensated pressure regulator for fluid under pressure including a hollow body, at least one intake for a fluid at high pressure, at least one outlet for this fluid at low pressure, a mobile regulation piece which slides in a cylindrical bore, able to stop the intake of the fluid at high pressure, and such that it includes a piece of generally cylindrical form with two heads of which the two partial inner and opposing faces are of quasi-equal surface; these two partial inner faces, a part of a bore surrounding the piece in a seal-tight manner and a seal integral with this bore delimits a high-pressure chamber, and the piece with two heads and this bore being mobile in relation to one another, and the intake for the high-pressure fluid emerges laterally in this high-pressure chamber, which fluid transmits to the mobile regulation piece loads which are cancelled out.

Abstract: A drain-back check valve assembly includes a body having a passageway with an inlet and an outlet. A bypass port extends from the passageway to an outer surface of the valve body. A main poppet valve assembly is disposed in the passageway and moveable between a closed position which prevents fluid flow from the outlet to the inlet and an open position which allows fluid flow from the inlet to the outlet. The main poppet valve assembly includes a poppet and a spool guide fixed to the poppet. The guide has a sidewall which includes a drain-back port. When the main poppet valve assembly is in the closed position, the drain-back port is aligned with the bypass port. When the main poppet valve assembly is in the opened position, the drain-back port is not aligned with the bypass port.

Abstract: The present invention comprises methods, compositions, devices and systems for determining the status of, or treating, a body structure or conduit. An embodiment of the invention comprises a fluid pressure control device for pressure control of fluid introduced into a body structure or conduit.

Abstract: A compensated pressure regulator for fluid under pressure including a hollow body, at least one intake for a fluid at high pressure, at least one outlet for this fluid at low pressure, a mobile regulation piece which slides in a cylindrical bore, able to stop the intake of the fluid at high pressure, and such that it includes a piece of generally cylindrical form with two heads of which the two partial inner and opposing faces are of quasi-equal surface; these two partial inner faces, a part of a bore surrounding the piece in a seal-tight manner and a seal integral with this bore delimits a high-pressure chamber, and the piece with two heads and this bore being mobile in relation to one another, and the intake for the high-pressure fluid emerges laterally in this high-pressure chamber, which fluid transmits to the mobile regulation piece loads which are cancelled out.

Abstract: A well system includes a local control unit configured to communicably couple to a well shut-in assembly at a well site, the well shut-in assembly operable to shut-in a wellbore based on a command from the local control unit; and a remote control unit configured to wirelessly communicate a line-of-sight airborne wireless signal, at a location remote from the local control unit and the well site, to initiate the command from the local control unit to the well shut-in assembly.

Abstract: A hydraulic chuck device includes a cylinder portion operated by pressure oil, a chuck opened and closed by operation of the cylinder portion, a pressure oil supply controlling pressure of pressure oil supplied to the cylinder portion, and a chuck controller controlling the pressure oil supply. When controlling the pressure oil supply to cause a jaw portion to perform a clamping operation, during movement of the jaw portion from an unclamping position to a preliminary position situated before a clamping position, the chuck controller supplies pressure oil set at a first pressure into a cylinder chamber for clamping to move the jaw portion quickly, and during movement of the jaw portion from the preliminary position to the clamping positon, the chuck controller supplies pressure oil set at a second pressure lower than the first pressure into the cylinder chamber for clamping to move the jaw portion slowly.

Abstract: A MQL system for accurately measuring and controlling a volume and pressure of a lubricating fluid provided to a machining tool during minimum quantity lubrication machining operations. The MQL system can further include measuring and controlling a volume and pressure of air provided during machining such that atomization of the lubricating fluid with the air can be controlled. Use of a continuous volumetric flow pump provides a continuous flow of lubricating fluid to the tool during machining operations.

Abstract: A pressure relief valve system for a fluid injection system is provided. The pressure relief valve system comprises one or more pressure transducers configured to sense fluid pressure within the fluid injection system. The transducers then generate electrical signals representative of fluid pressure readings within the fluid injection system in real time. Signals are received by a controller which compares pressure readings with a stored pressure threshold. An actuation signal is sent upon detecting a signal representative of a pressure that exceeds the stored pressure threshold, causing an electraulically-actuated valve to rotatably move to an open position. A method for providing pressure relief for a fluid injection system is also provided.

Abstract: A waterblasting system includes a fluid supply device, an air supply device, and a waterblasting tool. The air supply device contains a battery and an alternator in a single unit. The alternator is operated by compressed air from a separate air compressor and generates electric power, at least some of which is used to charge the battery.

Abstract: A high pressure seal assembly for connection to an upper and lower connector pipe. The seal assembly includes a lower seal assembly surrounding a lower end of a rotating pipe, e.g., a washpipe. The lower seal assembly includes a first and second seal ring that define an annular space. The seal rings have a simple cross-section and are identical, thereby facilitating ease of manufacture and assembly. High pressure seals are received within annular spaces of the respective seal rings. The high pressure seals define inner surfaces that have a layer of self-lubricating polymer for engaging the rotating pipe. The high pressure seals define a pressure facing cavity that receives a high pressure ring that mitigates the spreading of the body of the high pressure seals due to pressure and that prevents the seal from extruding through an adjacent gap. An excluder seal prevents debris from entering the seal assembly.

Abstract: Hydraulic circuits for controlling a movable component use one or more of a plurality of fluid supplies. Pressurized fluid flowing from one supply is routed toward the component and is not inadvertently vented into another fluid supply, or into an exit port. A backflow path is provided for fluid returning from the hydraulic component when the component is actuated in a reversed direction. The hydraulic circuits can be used, for example, on blowout preventers in a subsea environment.

Abstract: A hydraulic cylinder includes a cylinder having axially spaced-apart first and second bores, and a piston having a piston rod and arranged in the cylinder for movement between two end positions and dividing the cylinder into a piston side and a piston-rod side. A hydraulic pump pumps hydraulic oil into the piston side to move the piston from one end position toward the other end position while hydraulic fluid is discharged from the piston-rod side via the first bore and a first outlet line. A throttling device is operably connected to the cylinder to throttle a flow of the hydraulic fluid as the piston moves past and seals the first bore so that hydraulic fluid is discharged via the second bore, thereby reducing a delivery amount of the hydraulic oil and thereby braking and damping a movement of the piston toward the other one of the end positions.

Abstract: An ozone generation system which is adaptable for supplying ozone to different medium and small application processes. The system has a source of feed gas, a corona discharge cell receiving the feed gas from the feed gas source and generating ozone for the application process, a flow controller measuring and managing the flow of the feed gas from the feed gas source to the corona discharge cell; and a regulator receiving gas from the corona discharge cell and sending the gas to the application process. The regulator maintains pressure in the corona discharge cell independent of the application process pressure.

Abstract: A fuel storage system is provided for storing dimethylether (DME), a blend including DME, or other similar highly volatile fuel at a vehicle. The fuel storage system including a main storage tank, an expansion tank, a fuel filling receptacle configured to receive a fuel filling nozzle of a filling station, and a valve arrangement having at least a normal operating setting and a fuel filling setting. The valve arrangement in the normal operating setting provides a fuel passage between the main storage tank and the expansion tank, and the valve arrangement in the fuel filling setting both provides a fuel passage between the fuel filling receptacle and the main storage tank and prevents fuel flow between the main storage tank and the expansion tank. The fuel storage system is configured to mechanically prevent disconnection of the fuel filling nozzle from the fuel filling receptacle unless the valve arrangement is in the normal operating setting.

Abstract: A pressure-type flow controller includes a main body provided with a fluid channel between a fluid inlet and a fluid outlet and an exhaust channel between the fluid channel and an exhaust outlet; a pressure control valve fixed to the fluid inlet of the main body for opening/closing the upstream side of the fluid channel; a pressure sensor for detecting the internal pressure of the fluid channel on the downstream side of the pressure control valve; an orifice provided in the fluid channel on the downstream side of the point of branching of the exhaust channel; and an exhaust control valve for opening/closing the exhaust channel.

Abstract: A gladhand electrical connectivity towing system couples electrical wiring from a towing vehicle to a towed vehicle through a quick and easy gladhand coupling operation between a pigtail and a vehicle mount. The system provides a pigtail that detachably couples to a vehicle mount through a tool-free, 20°-25° rotation, gladhand-type connection between male and female gladhand couplers. Two aligning gladhand couplers and one stabilizing gladhand coupler mate. The pigtail and vehicle mount include electrical interfaces that align and engage to conduct electricity from the towing vehicle to the towed vehicle. The electrical interfaces have lips and multiple apertures, with the lips forming a sealed interface to protect against moisture and debris. Multiple first conduction members are fitted into apertures in the electrical interfaces to conduct electricity from the power source of the towing vehicle to the towed vehicle.

Abstract: A system and method for deploying a rod annular blowout preventer using existing hydraulic pressure is provided. The system connects between an existing hydraulic blowout preventer system and a blowout preventer device installed on the wellhead to provide regulated hydraulic pressure to a rod annular blowout preventer. The system comprises a manifold that receives hydraulic fluid from an existing reservoir and pump and accumulator, routes the fluid through a pressure regulator and into the rod annular blowout preventer. The rod annular blowout preventer includes a diaphragm that expands to close the wellbore during maintenance or during an emergency event. The system provides controlled hydraulic actuation of the rod annular blowout preventer, eliminates manual deployment of the rod annular blowout preventer, and allows the operator to initiate the rod annular blowout preventer away from the wellhead.

Abstract: A three-way valve assembly, including a valve body having a fluid flow path and a valve member movable in the fluid flow path between a supply port and a work port, and between a load sense passage and a pressure relief port. The valve member may move between a first position and a second position for controlling flow and regulating fluid pressure differences sensed in the flow path; and for limiting fluid pressure in the flow path to a predetermined pressure level set by a pilot-operated pressure limiter valve when the valve member is in the second position. The valve member may move between the second position and a third position to open the flow path from the load sense passage to the pressure relief port for relieving fluid pressure in the flow path when the fluid pressure from an over-loaded actuator exceeds the predetermined pressure level set by the pressure limiter valve.

Abstract: An air braking system for a vehicle can include an air compressor, a reservoir, a first air line, a brake hub, a second air line, a control valve, a release valve, and a third fluid line. The first line can place an outlet of the compressor in fluid communication with an inlet of the reservoir. The brake hub can have a chamber in fluid communication with the outlet of the reservoir via the second line. The control valve can selectively open and close the second air line. The release valve can be in fluid communication with the chamber and having an outlet. The third line can place the outlet of the release valve in fluid communication with an inlet of the compressor.

Abstract: A tractor protection valve having a parking brake supply port, a parking brake delivery port, an exhaust port, and a quick release valve positioned between the parking brake supply port and the parking brake delivery port. The quick release valve is movable between a supply position allowing fluid to flow from the parking brake supply port to the parking brake delivery port and an exhaust position allowing fluid to flow from the parking brake delivery port to the exhaust port. The quick release valve may include a diaphragm that is movable between the supply and exhaust positions. The quick release valve may include a valve body that is positioned in a housing of the tractor protection valve.

Abstract: A valve with a shuttle for use in a flow management system is capable of bypassing a backflow.

Abstract: A brake modulator (1) for a compressed air braking system (80) of a vehicle is disclosed. The brake modulator (1) has a main housing (8) and two relay valves (2, 3). Each relay valve is configured with a delivery valve seat (31, 131) and a vent valve seat (30, 130) and a vent position, wherein compressed air inlets (2d, 3d) are connected via a transverse bore (27) to a common compressed air inlet port (25, 26), and a delivery duct (12a, 112a) extends in the axial direction (A) in each relay valve (2, 3). The relay valves (2, 3) have guide body inserts (12, 112) which are inserted into a longitudinal bore (29) of the main housing (8), which longitudinal bore (29) extends in the axial direction (A), and the relay valves (2, 3) in each case have the delivery duct (12a, 112a).

Abstract: Distributing, opening and closing device for taps, has an inlet chamber, an outlet chamber to the shower column/head or to the shower hose, an outlet chamber to the shower hose or the shower column/head, a discharge opening and a water regulator with the functions of opening, intermediate closing and closing/discharging in one single mechanism, the water regulator being connected to the chambers of the distributing device, and being regulated via an actuating control with several positions, diverting the water, depending on the actuating rotation, to the corresponding chamber or discharge opening of both, thus releasing the water retained in the feed pipes in order to eliminate uncontrolled discharges of water, dripping or the formation of bacteria that are commonly generated in stagnant water, such as legionella.

Abstract: A relief valve comprises a valve body, a pallet assembly, a relief pallet seat, a pilot pallet seat and a force element. The valve body has an interior in fluid communication with a container having a container pressure and the valve body having an exterior exposed to an atmosphere. The pallet assembly has a relief pallet having a relief pressure bearing area, a pilot pallet having a pilot pressure bearing area, and a shaft connects the pilot pallet and relief pallet to space the pilot pallet from the relief pallet. The relief pallet seat extends from the valve body towards the interior of the valve body and is configured to seal against the relief pallet to seal the valve body. The pilot pallet seat extending from the valve body and away from the interior of the valve body and is configured to seal against the pilot pallet to form a reservoir between the pilot pallet, the pilot pallet seat and the valve body.

Abstract: A pressure controlled valve assembly has a housing with a pressure controlled valve moveable between an open and closed position with respect to a valve seat for controlling communication between a pneumatic supply and a pneumatic pressure control source. The housing also has first and second passageways with a pair of check valves in each passageway. Each passageway is connectable to a reversible pump such that when the pump operates in one direction one pair of check valves allow flow while the other pair of check valves prevents backflow.

Abstract: A central tire inflation/deflation system (CTIS) with a novel valve that may deflate more quickly and may deflate to a lower pressure than the previously known central tire inflation/deflation system valves. Also, the present valve may not be temperature sensitive, at least because the present valve does not require trapped air behind a diaphragm to operate the valve. The present valve may be placed into existing CTIS's in place of existing valves, without modifying pneumatic lines of the existing CTIS's. Thus, the present valve may be operated by a single fluid flow line, receive pressure from the single fluid flow line, and exhaust to the single fluid flow line. A second communication line, either a pneumatic pilot line or an electrical line, is not necessary, which allows the present valve to be retrofit into an existing CTIS without adding weight or complication from additional components.

Abstract: An apparatus, fixed or recoverable to control a remote device includes a valve assembly having a cylinder, a piston dividing the cylinder into a first hydraulic chamber and a second hydraulic chamber, a spring to bias the piston toward the first hydraulic chamber, and a linkage to connect the piston to the remote device, a quick-vent valve assembly comprising an inlet connected to a hydraulic source, an outlet connected to the first hydraulic chamber, and a vent port, wherein the quick-vent valve assembly is configured to discharge fluid from the outlet to the vent when a pressure of the hydraulic source connected to the inlet drops below a threshold value, and a vent line connecting the vent port of the quick-vent valve assembly to a hydraulic accumulator.

Abstract: The invention discloses an air vent valve for venting a filter, having a cavity with an inlet and an outlet and a sealing element in the interior of the cavity for sealing the inlet in a first position and for sealing the outlet in a second position. The sealing element is freely movable between the first position and the second position, and a flow is created between the inlet and the outlet when the sealing element is in an intermediate position between the first position and the second position.

Abstract: In an automotive automatic transmission, a force applying piston mounted on a servo pin is supported at both sides of the piston. A first end of the servo pin is conventionally supported in a servo pin bore. A second, extended end is supported in a specially configured support bore formed in the assembly cover. Excentric loading and excessive wear of the servo pin and servo pin bore, which can result in damage to the piston, is reduced or eliminated thereby.

Abstract: Systems and methods use selective regeneration to aid in controllability and efficiency of a hydraulic circuit. A regeneration deactivation valve can react to a differential pressure when the function is in free air and at risk of cavitating or when then function is doing positive work and needs to be efficient. When the function is at risk of cavitating, the regeneration deactivation valve can react to the potential for cavitation and the regeneration deactivation valve closes so the function regenerates. The regeneration deactivation valve can also react when the function is not at a risk of cavitating and can open up allowing the function to move with more power and efficiency.

Abstract: A one way valve assembly including a base, a cover, and a valve member is provided. The base includes a first and a second lower hollows and an inlet communicated with the first lower hollow. The cover includes a first and a second upper hollows, a connecting path, an outlet, and an exhaust nozzle. Positions of the first and the second upper hollows correspond to positions of the first and the second lower hollows. The first upper hollow is communicated with the second upper hollow via the connecting path. The outlet is communicated with the second upper hollow. The valve member is disposed between the base and the cover. The valve member has a first zone, a second zone, and a third zone corresponding to the first and the second upper hollows and the connecting path, and includes a valve nozzle between the second lower hollow and the second upper hollow. The first zone can deform towards the first lower hollow or the first upper hollow.

Abstract: A hot wheel protection valve includes a body defining a piston passageway and at least one piston positioned within the piston passageway, a first biasing member positioned on a first end of the at least one piston and biased towards a second end of the at least one piston, a brake pipe in fluid communication with the second end of the at least one piston, a brake cylinder in fluid communication with the second end of the at least one piston, and an exhaust port defined in the body and positioned between first and second ends of the valve. Pressurized fluid may be vented from the brake cylinder via the exhaust port upon a combination of brake cylinder pressure and brake pipe pressure exceeding a force exerted by the first biasing member.

Abstract: Systems and methods for controlling mixing between one or more fluids are provided. The systems and methods may utilize a vessel comprising one or more zones where the zones are configured to minimize mixing between one or more fluids. Certain systems and methods may utilize a vessel comprising a tortuous flow path. Other systems and methods may utilize a vessel comprising one or more zones.

Abstract: The invention relates to a gas regulating valve (1) for a respiratory system comprising:—a main path between an inlet (2) and an outlet (3), and—an evacuation path between the outlet (3) and an evacuation orifice (4), characterised in that:—the main path is provided with at least a non-return valve for preventing gas to circulate from the outlet (3) to the inlet (2), and—the evacuation path is provided with an obstructing membrane (10) arranged and designed for being deformed by gas from the inlet (2) to partially or fully obstruct the evacuation path. The invention also relates to a mask integrating such gas regulating valve, and to a respiratory system also comprising such gas regulating valve.