Abstract: A portable, liquid-dispensing bag that has a bag within one or more bags. A fitment portal aligns openings in the one or more inner bags and outer the outer bag, which in at least one embodiment accommodates a tap. A variety of arrangements and variations are possible, including having a re-sealable opening in both the inner bag or bags and a re-sealable opening in the outer bag. A gas vent can be added to either the inner or outer bags. It is contemplated that a drinkable liquid is stored in an inner bag, and ice or cold water is stored in the outer bag to keep the drinking fluid cold.

Abstract: A combination check valve and relief valve has a valve body with an inlet, an outlet, and a valve chamber operatively interposed between the inlet and outlet. A check valve may be integrated with the relief valve and therefore simplify a hydraulic system. The valve includes a relief valve member which is within the valve chamber. The valve also includes a resilient member with a first end and a second end. The first end of the resilient member operatively engages the relief valve member. The valve includes a setting member pressure-fit within the valve chamber to operatively engage the second end of the resilient member. The resilient member is resiliently biased between the setting member and the relief valve member to bias the relief valve member against a relief valve seat, whereby, when pressurized fluid communicates with the inlet, the resilient member is compressed, and the relief valve member disengages its seat to enable the fluid to pass through to the outlet.

Abstract: A venting-valve/check-valve combination useful for venting non-condensable gases and steam (or a combination) in a liquid pipeline comprises a venting-valve, a check-valve, and a capillary port through which gas can pass, said port having two openings, each valve controlling the opening and closing of one of said openings.

Abstract: The present invention relates to methods and devices for retrofitting fire hydrants with additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include a replacement hydrant body having an enlarged diameter portion that can be installed to replace an existing hydrant body. The replacement hydrant body can include a secondary valve comprising a seat, biasing structure, and a restriction member to close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open.

Abstract: A ball valve is provided for threaded connection to a separable component 72 having male threads 74. A housing 10 contains a ball 12 selectively rotatable for passing fluid through the housing, and a flange member 20 threadably secured to the valve housing. A stop ring 16 is positioned outward of the valve housing and engages the flange member. A coupling 20 is threadably secured to the stop ring and includes female threads for engagement with male threads on the separable component.

Abstract: A suspension system includes four electronically controlled actuators, one at each of the four wheels. The actuators are each controlled by an electronic control unit. The left front and right front actuators are mechanically connected with each other. The left rear and the right rear actuators are also mechanically connected with each other. The only connection between the front two actuators and the rear two actuators is an electronic communication through the electronic control unit.

Abstract: A compressed gas regulator of a piston type is disclosed in which a regulator is configured with an input valve situated entirely inside a compressed air canister, which regulator is then attached to a paintball gun, marker or other device for providing discrete charges of gas at a predetermined pressure to the attached device. The overall size and weight of the regulator are minimized, which allows increased capabilities to the user. A regulator overpressurization port vents behind a conventional safety gauge for safety purposes. Fill, gage, and canister overpressurization rupture ports are interconnected with a fill channel that extends from the canister to the ports without intersecting or interfering with the regulating components within the regulator. The input valve seat face is surrounded by a shallow generally conical surface within an input plenum. The shallow generally conical surface extends at approximately 5 to 15 degrees.

Abstract: A valve assembly for a faucet includes a spout, a valve stem, a first valve, and a second valve. The first valve is rotatably coupled to the valve stem upstream from the spout and is selectively positionable to control a flow of fluid from a fluid source to the spout. The second valve is rotatably coupled to the valve stem for selectively draining fluid from the valve assembly. Further, the second valve is coupled to the first valve such that when the first and second valves are positioned in a first operational position, fluid flows from the source through the spout, and such that when the first and second valves are positioned in a second operational position, fluid is substantially prevented from flowing from the source through the spout and residual fluid within the faucet is gravity drained from the faucet.

Abstract: A fire hydrant system relating to protection of a water supply from contamination. The fire hydrant system includes a barrel adapted to communicate at least indirectly with a water supply; a nozzle extending from the barrel; a hydrant valve adapted to controllably regulate communication between the barrel and the water supply; a valve actuator adapted to allow actuation of the hydrant valve; a nozzle cap adapted to at least close off the nozzle opening; and a hydrant shoe in communication with the water supply, the hydrant shoe comprising a backflow prevention assembly, wherein water can flow from the water supply through the hydrant shoe into the barrel at an open position of the backflow prevention assembly disc, and wherein media cannot enter the water supply via the barrel when the backflow prevention assembly disc is in a closed position.

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.

Abstract: A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art.

Abstract: Valves for connecting fuel supplies to a device are disclosed. The fuel supplies can be a pressurized or non-pressurized cartridge that can be used with any device, such as fuel cells or fuel refilling apparatus. The valve includes face seals to minimize the amount of fuel remaining in the valve when the fuel supply is separated from the device. In one embodiment, the valve includes deformable members including sealing surfaces, where the flow paths through the valve are sealed and unsealed by the deformation of the deformable members. In another embodiment, the female valve component includes a shortened body to limit the volume of fuel remaining in the valve. The female valve component also includes a cap with slots formed therein so that residual fuel can drain from the valve component into a fuel reservoir.

Abstract: A fuel receiver assembly, that permits replacement of a worn fuel receiver without draining the fuel tank, includes a check valve receptacle having a male-pipe-threaded nipple which engages the female-threaded pipe coupling of the fuel tank. The check valve receptacle has a spring-biased, normally closed check valve that prevents fuel from escaping from the fuel tank. Fuel pressure from the refueling pump opens the normally-closed check valve. The check valve receptacle is designed to be a relatively permanent installation in the fuel tank, having ultra-low-wear components. The check valve receptacle also has a female-threaded socket that is coaxial with the male-pipe-threaded nipple. A specially-designed male-threaded fuel receiver engages the female-threaded socket. Sealing between the check valve receptacle and the replaceable fuel receiver is accomplished by an O-ring seal installed on the fuel receiver.

Abstract: Wet barrel fire hydrants which feature additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include valves which close off portions of the hydrant or water conduit otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open and/or a pump is connected to the nozzle. Such valves preferably open automatically when water is flowing from the water supply through the nozzle, but close off portions of the barrel when the nozzle is open and water is not flowing through the nozzle.

Abstract: A frost free faucet having a spigot assembly including a drain conduit, a sleeve assembly including an elongated pipe, and a valve assembly. The valve assembly includes a ½ turn valve, a check valve and optionally a pressure relief mechanism. The ½ turn valve includes a rotatable valve element configured with a water passageway and a stationary valve element with one or through holes. The rotatable valve element is circular-shaped and configured with a water passageway in a semicircular portion. The stationary element is a disc shaped configured with one or more through-holes in a semi-circular portion of the stationary valve element. Upon turning the rotatable valve element 180 degrees in a first direction, the water passageway and the one or more through-holes are aligned to an open position and upon turning the rotatable element 180 degrees in a second direction, the water passageway and the one or more through-holes are misaligned to a closed position.

Abstract: A fire hydrant system relating to protection of a water supply from contamination. The fire hydrant system includes a barrel adapted to communicate at least indirectly with a water supply; a nozzle extending from the barrel; a hydrant valve adapted to controllably regulate communication between the barrel and the water supply; a valve actuator adapted to allow actuation of the hydrant valve; a nozzle cap adapted to at least close off the nozzle opening; and a hydrant shoe in communication with the water supply, the hydrant shoe comprising a backflow prevention assembly, wherein water can flow from the water supply through the hydrant shoe into the barrel at an open position of the backflow prevention assembly disc, and wherein media cannot enter the water supply via the barrel when the backflow prevention assembly disc is in a closed position.

Abstract: A valve mechanism (3) includes a valve seat member (31) having a guiding portion (319); a valve member (32) having a valve body (321), a guiding shaft (322), and a supporting shaft (323); and a sub-valve member (33) having a sub-valve body (331) and a connecting portion (332). The valve body (321) and the sub-valve body (331) ascend together by pressing the fluid-storing portion (11); and the valve body (321) travels to an open position and the sub-valve body (331) travels to a detached position. In this state, when a pressure applied to the fluid-storing portion (11) is removed, the valve body (321) and the sub-valve body (331) descend together; and after the sub-valve body (331) travels to a contact position, the valve body (321) travels to a closed position.

Abstract: A pressure regulator, comprising a pressure regulating mechanism and a connector. A supply connecting tool (3) supplying a pressurized fluid to a body part (11) with the built-in pressure regulating mechanism (5) is connected to the connector (2) to secure excellent pressure regulating function by preventing the pressure regulating function from being affected by the connecting operation of the connecting tool and supply a fluid to stop the reverse flow of fluid caused by the attaching/detaching operations of the connecting tool. The connector (2) comprises a link member (544) openably operating a valve mechanism (6) according to the connecting operation of the supply connecting tool (3). The pressure regulating mechanism (5) comprises a pressure regulating valve (55) operated according to the deviation of a diaphragm (52) to regulate the pressurized fluid to a secondary pressure. The link member (544) is formed separately from the pressure regulating valve (55).

Abstract: The present invention relates to a flow path control valve capable of preventing a back flow of a fluid by maintaining inner pressure of a valve chamber constant. An object of the present invention is to provide a flow path control valve, which can rapidly and accurately control a flow path for a working fluid and also prevent a back flow of a working fluid without an additional check valve, thereby reducing the size of the product.

Abstract: A valve assembly is disclosed. The valve assembly includes a valve body having an inlet opening, an outlet opening, and a flow passage extending therebetween. A check valve is disposed within the flow passage. A shutoff valve is disposed within the flow passage. A venturi is disposed within the flow passage between the check valve and the shutoff valve. A fluid system into which the valve assembly is installed is also disclosed.

Abstract: An irrigation system having at least one water distribution member, a water supply source and a horizontally oriented, shut-off control device located in a fluid flow line between a water supply source and the at least one water distribution member for automatically shutting off the flow of supply water to the at least one water distribution member in response to a predetermined increase in force of fluid flow. The shut-off control device has a housing with an interior flow path having rails and projections dimensioned to support a compressible ball which moves within the housing and limits side-to-side motion or turbulence.

Abstract: The invention relates to a tap for a gas or liquefied gas vessel having on a conical threaded base of the tap body a clamping ring adapted to be firmly tightened against a neck of the vessel to maintain a tight engagement of the threads of the base and the neck of the vessel in case of application of a strong impact force to the tap exteriorly of the vessel.

Abstract: Shock absorber containing a flow channel (16), provided with a valve assembly, made in the piston section. This valve assembly is designed to be actuated hydraulically. To this end there is an auxiliary chamber (22, 42) which on one side is eliminated by a movable valve body (18). This valve body is provided with an inlet for oil from the flow channel to the auxiliary chamber. There is an outlet (21, 41) (that can be closed off). The surface area of the valve body acting on the valve seat (19) is less than the surface area of the valve body in the auxiliary chamber, so that fluid flowing through the inlet of the valve body results in an increase in the volume of the auxiliary chamber and thus in closing movement of the valve body. Because filing of the auxiliary chamber takes some time, a frequenncy-dependend closing characteristic of the flow channel is obtained.

Abstract: An image forming apparatus includes a cartridge which ejects an ink, a chamber having an inlet unit which inhales a fog generated when the ink is ejected from the cartridge and an outlet unit which exhales the inhaled fog, an air pressure generating unit which is connected to the chamber to generate an air pressure to inhale and exhale the fog from the chamber, and a valve unit which selectively opens and closes the inlet unit and the outlet unit by the air pressure which is generated in the air pressure generating unit.

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 control valve assembly includes a first control valve and a second control valve longitudinally mounted to the first control valve. A first check valve and a second check valve respectively disposed in the first control valve and the second control valve such that the leakproof effect of the control valve assembly is doubled.

Abstract: An oil flow control valve (10) for a cam phaser is described comprising a spool (18), a spool housing (16) and a check valve (40), wherein the spool (18) comprises a throughbore (60) and the check valve (40) is mounted in the spool housing (16) in that it extends through the throughbore (60) allowing the check valve (40) to be integrated in the housing (16) of the oil flow control valve (10), with the spool (18) reciprocally moving around the check valve (40), in order to avoid any influencing of the equilibrium of a spool (18) when the oil pressure is suddenly changing in the oil flow control valve (10) due to varying efforts in the cam phaser caused by the valve train.

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 non-refillable valve is provided that allows for an initial filling of a container, but prevents subsequent refilling of the container. In one embodiment, the valve includes a valve core having a retaining means for maintaining the valve core in an open or non-sealing position to allow flow through the valve and filling of the container. The valve core may then be advanced to seal the container, and subsequently selectively operated to discharge the container as desired. Further refilling of the container is prevented by the force of fluid reentering the valve which forces the valve core to its seated engagement with the valve seat.

Abstract: An apparatus for providing a pressurized gas inline valve assembly incorporating a check valve to maintain pressure above a selectable psi and a ball valve for selectively shutting off gas flow. The apparatus is preferably positioned approximate the gas source in a beverage dispensing system that uses carbon dioxide for carbonation, preservative and propellant. Preferably, the apparatus is designed to maintain the system pressure above the threshold pressure that when below said threshold pressure the carbon dioxide would revert to its inoperative dry ice solid state as opposed to its operative liquid state.

Abstract: The hydraulic distributor exhibits a cylindrical and internally-hollow body (2) having an inlet chamber (3) for a fluid and an outlet chamber (4) which are interconnected directly (by a communication conduit), or indirectly by an external distributor. A cursor (7) is axially mobile in the hollow body (2) and a closing element (12) is associated to the cursor (7) by elastic elements (11). The closing element (12) is mobile in the inlet chamber (3) between a first position in which it occludes the inlet chamber (3) and a second position in which it permits passage of fluid from an antechamber (3a) to a second opening (3b).

Abstract: Disclosed is a backflow preventing device for a solenoid valve. The solenoid valve includes a solenoid valve including a body having an inlet port, an outlet port, and a valve seat interposed between the inlet port and the outlet port, and an opening part mounted on the body and having a plunger moved by an electromagnet and a spring. The backflow preventing device includes a closure of rubber mounted between the inlet port and the outlet port, and having a fluid supply line which is opened by supply pressure of a fluid and is closed by its resilience if supply of a fluid is not stopped. The rubber closure is mounted between the inlet port and the outlet port to prevent the backflow of the fluid in the solenoid and interrupt a pollution source resulted from the backflow of the fluid.

Abstract: A valve and connector assembly for interconnection with and rinsing of sewage hoses including sewage discharge hoses and connectors for Recreational Vehicles. The assembly comprises a connector for interconnection with a sewage hose having connectors compatible with a RV sewage discharge valve. The assembly has a garden hose connector to receive a garden hose hookup to direct water into the contaminated sewage hose for rinsing prior to storage of the sewage hose. A diffuser within the connector causes the water stream to spray thereby rinsing the sewage hose.

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 pressure exerted thereon at the inlet opening. A mechanism is provided within the passageway for exerting a bias force against the pressure responsive element sufficient to close the inlet opening to fluid flow absent a pre-established level of pressure exerted on the pressure responsive element in opposition to the bias force. Finally, a retainer device is positioned for removably securing the pressure responsive element and bias force exerting mechanism within the passageway.

Abstract: A tap for a gas or liquid cylinder is provided that comprises an inverted seat primary valve located in a main portion of a tap body and a secondary check valve spring biased into closed position and located below the lower end of a threaded section of a root end portion of the tap body. Both valves are actuated by an elongated stem extending from the main portion of the tap body into the root end portion. When the tap is fixed to a gas or liquid cylinder, the secondary check valve is located in the cylinder, thereby remaining operative when the tap body is sheared-off at a location where it extends out from a cylinder tap aperture.

Abstract: Fire hydrants which feature additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include valves which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open. Such valves preferably open, manually or automatically, when water is flowing from the water supply through the nozzle, a condition which renders it difficult at best to introduce toxins through the hydrant into a water supply, but close off portions of the barrel when the nozzle is open and water is not flowing through the nozzle.

Abstract: A valve is provided for use in a domestic water re-circulation system The valve has a unitary body member that includes an upstream end and an upstream portion disposed adjacent to the upstream end. The body member also includes a downstream end and a downstream portion disposed adjacent to the downstream end; and a middle portion disposed between the upstream portion and the downstream portion. A radially outwardly facing outer wall and a radially upwardly facing inner wall exist. The radially inner facing wall defines an axially extending passageway extending between the upstream end and the downstream end, and through the upstream portion, middle portion and downstream portion of the body. The axially extending passageway includes a corresponding upstream end, a downstream end, an upstream portion, a middle portion and a downstream portion. The body further includes a radially extending controller port and a radially extending flow limiter port in fluid communication with the axially extending passageway.

Abstract: An adaptive fitting for valves. The adaptive fitting has a fitting body having a first end and a second end. The fitting body defines an inner passageway extending from the first end of the fitting to the second end. The fitting is provided with a valve-engaging portion disposed on the first end of the fitting body. This valve-engaging portion has a threaded region for threadably engaging a threaded section of a valve. On the second end of the fitting body is disposed a sealing portion. The fitting is provided with one or more ports disposed about or near the first end of the fitting body for allowing flow there through.

Abstract: A frost free faucet having a spigot assembly including a drain conduit, a sleeve assembly including an elongated pipe, and a valve assembly. The valve assembly including a ¼ turn valve and a check valve. The ¼ turn valve includes a rotatable disc with an inlet and a stationary disc with a through hole. Each disc is formed of a ceramic material, wherein upon turning the rotatable disc 90 degrees in a first direction the inlet and the through-hole align to an open position and upon turning the rotatable disc 90 degrees in a second direction, the inlet and the through-hole misalign to a closed position.

Abstract: A reducer valve for pressurized gas includes a piston (2) displaceably mounted in a valve housing (3) against the force of a pressure spring (8). At one end, the piston (2) is subjected to pressure by the back pressure via a control pressure line (20) whereby the gas, which flows in from a pressurized gas source via a gas inlet (17), is throttled. The reducer valve is improved so that a specific gas volume remains in the connected pressurized gas source below a minimum pressure. A directional valve (24, 25) is provided in the control pressure line (20) and opens above a predetermined limit pressure.

Abstract: A water hydrant having a housing with inlet and outlet ends, and a valve assembly having a valve seat and a valve closure element. A valve operating rod is secured to the valve closure element to open and close the inlet end. A backflow preventor check valve mounted within the housing provides for fluid flow only in the downstream direction toward the outlet end. In one embodiment, the backflow preventor and valve closure element are formed of a unitary body; likewise, the valve seat and housing are formed of a unitary body. In another embodiment, an extension body is associated with the valve operating rod and the backflow preventor is attached to the extension body upstream from the valve seat. In a further embodiment, the backflow preventor is secured to the housing upstream from the valve seat, and is adapted to remain in a fixed position when the inlet valve is adjusted.

Abstract: A spring-loaded pressure relief valve, particularly for containers of pressurized fluids, comprising a valve body that is associable with a container and forms a discharge port that is controlled by a main piston; an auxiliary valve is further provided, which controls a venting port and drives the intervention of the main piston, such main piston being accommodated in a cavity that is formed in the valve body and is open in an axial direction on the opposite side with respect to the venting port.

Abstract: Fire hydrants which feature additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include valves which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open. Such valves preferably open, manually or automatically, when water is flowing from the water supply through the nozzle, a condition which renders it difficult at best to introduce toxins through the hydrant into a water supply, but close off portions of the barrel when the nozzle is open and water is not flowing through the nozzle.

Abstract: A vacuum feed system for feeding liquid chemical into a stream of a second liquid flowing in a conduit includes a venturi connected in the conduit for supplying vacuum through first and second one-way check valves, a flow regulating valve, and a vacuum regulated flow control valve connected to a supply of liquid chemical to be fed. A pressure relief valve connected between the first and second check valves prevents back flow through the system. The components of the system, from the vacuum regulated flow control valve to the venturi, are arranged to provide a continuous upward flow path to thereby eliminate trapped gas in the system.

Abstract: A non-return valve (10), typically of commonly called duckbill valve shape, comprising a valve body (12) and a valve membrane (14). The valve body (12) is generally tubular and includes an elongate passageway (16) with inlet (18) and outlet (20) at opposing ends. The valve membrane (14) is of a generally conical-shaped diaphragm formed integrally with the valve body (12). The diaphragm (14) has a collapsible opening or aperture (22) located at or adjacent the cones apex. The conical diaphragm (14) is oriented with its apex pointing downstream. The resiliently flexible material from which the diaphragm (14) is constructed, ensures that the diaphragm (14) in a collapsed condition obstructs or closes the aperture (22) to prevent fluid flowing in a reverse direction, i.e. backflow towards the inlet.

Abstract: In an electrical multi-purpose valve for supplying secondary air into an exhaust system of an internal combustion engine, in which a power-actuated closing member controls a valve orifice in a passage between an inlet from an air supply line and an outlet to the exhaust system, a non-return valve is arranged downstream of the closing body in the direction of the flow of the air through the valve between the non-return valve and the valve outlet, and baffle devices are provided which deflect exhaust gas entering the valve from the outlet at least once by an angle of about 90°.

Abstract: A pressure control valve, which has a main valve for control, capable of opening and closing a valve hole by means of a diaphragm, and controls the pressure of a fluid by the agency of the main valve for control, comprises a non-return auxiliary valve located around the main valve for control so as to be coaxial therewith. The non-return auxiliary valve includes a cylindrical portion to be guided by a valve guard body having the valve hole therein and an annular rib extending outward from one end of the cylindrical portion. The rib can engage an auxiliary-valve seat on an outlet-side case.

Abstract: A safety device is provided for a gas distribution system in an airplane, containing at least one pressure regulator (5) between a pressurized gas source (2) and a supply line. Reliability of operation is improved with the provision of a pressure-limiting device (4) with two lines (41, 42) arranged in parallel with two pressure-limiting valves (43, 44, 45, 46) each arranged in the same direction in series. The pressure-limiting device (4) is arranged upstream of the pressure regulator (5).

Abstract: A valve for a pressurized container includes a valve housing having a central bore and a port in the for connection of a nozzle. Preferably, the valve has a unidirectional stepped valve housing. In the housing is a central bore that includes an upper portion, lower portion and a middle portion. The lower portion is narrower than the middle portion which in turn is narrower than the upper portion. The port is provided in the middle portion of said housing to facilitate connection of a nozzle to the valve. The valve has a t-stem with a lower end having a key-way and a cavity for receiving the upper portion of the valve seat. The valve seat provides the primary valve seal when the valve is closed. The upper portion of the valve seat has a geometry for engaging the t-stem to provide a locked assembly.

Abstract: A flow control module has a valve body with a bore extending therethrough and a first disc occupying substantially the entire area of the bore and having at least one aperture extending therethrough. The valve body also includes a second disc adjacent to the first disc wherein the second disc also occupies substantially the entire area of the bore and has at least one aperture extending therethrough. The discs are rotated so that the apertures may align to increase or to reduce flow therethrough. The valve body also includes a check valve proximate to the first disc and the second disc to close and prevent backflow. Arranging multiple flow control modules in line in a system provides incremental pressure drops to achieve a total pressure drop in stages while minimizing or eliminating cavitation.