Abstract: An apparatus, a method and a valve with a reactive chemical inlet, a reaction chamber outlet, and a closure having an open and closed configuration to open and close, respectively, a route from the reactive chemical inlet to the reaction chamber outlet, the valve further including an additional cleaning chemical inlet at a downstream side of the closure to purge the closure.

Abstract: A valve for pressurized fluid including a body housing a fluid circuit having an upstream end configured to be placed in communication with a reserve of pressurized fluid and a downstream end configured to be placed in communication with a user of fluid, the circuit including a collection of valve shutter(s) having at least one shutoff valve shutter allowing the circuit to be closed or opened, the valve having a member for manually controlling the collection of valve shutter(s), the control member being mounted thereby allowing the body to move between a rest position in which the collection of valve shutter(s) is in a position in which the circuit is closed and an active position in which the control member actuates the collection of valve shutter(s) into a position in which the circuit is open with a first bore section.

Abstract: A fuel tank isolation solenoid valve for a vehicle includes: a plunger disposed in the isolation solenoid valve to be vertically moved and has first vent holes for releasing overpressure or over-negative pressure; a valve body disposed in the isolation solenoid valve to be vertically moved and has second vent holes for releasing overpressure or over-negative pressure.

Abstract: A pressure compensated solenoid valve with fluid flow force balancing is provided. The solenoid valve includes an armature and a valve plunger arranged to transport hydraulic fluid from a supply end of a valve plunger to an upper end of the armature facilitating a resultant upper fluid force that acts upon the upper end of the armature to balance a resultant lower fluid force that acts on the supply end of the valve plunger. The solenoid valve includes a poppet that is configured as a pressure-relief valve for maintaining a minimum fluid pressure within an actuation fluid gallery. An inlet fluid force of the poppet is balanced by an outlet fluid force of the poppet.

Abstract: The present invention discloses a beer spear with a pressure relief valve, which comprises a beer spear seat, a pressure relief valve, an inner tube fixing sleeve, an inner tube fixing spring and an inner tube assembly; the pressure relief valve is arranged on the outer side of the beer spear seat and the pressure inlet of the pressure relief valve communicates with a gas storage chamber; a head movable hole matching the head of a dispenser is opened at the top of the beer spear seat. The present invention is more convenient to assemble and disassemble a draft beer keg, and also the space for the draft beer keg is saved and the problems such as gas leakage and draft beer spoiling caused by damages of the gas tube are avoided.

Abstract: A safety valve (1) has a first valve, and a second valve, a magnetic armature (3) moved by voltage applied to a coil (2). Movement of the armature (3) acts against a spring force of the first valve spring (5) and loosens the first valve body (4) from the first valve seat (6). The movement of the armature (3) subsequently acts against a spring force of the second valve spring (8) and loosens the second valve body (7) from the second valve seat (9). This frees a valve opening for a flowthrough of the gas flow. The flowthrough amount of the gas flow through the valve opening can be continuously controlled as a function of the voltage applied to the coil (2) between a closed position and a fully open position even in partially open positions.

Abstract: Provided is a safety valve (10) comprising a body (12) which defines an incoming fluid passage (14) and a return fluid passage (20). The incoming fluid passage (14) generally enables a fluid to pass from a fluid reservoir (18) through the body (12) to the tool head (16). The return fluid passage (20) generally enables a fluid to return from the tool head (16) through the body back to the fluid reservoir (18). The body (12) further comprises a diverter (22) which is displaceable between an active position and an inactive position. When the diverter (22) is in the active position, the diverter (22) redirects the fluid via a shunting passage (24) from the incoming fluid passage (14) to the return passage (20) to prevent operation of the tool head (16). Conversely, when the diverter is in the inactive position, fluid is allowed to pass freely through the incoming and return passages (14) and (20), respectively, to allow operation of the tool head (16).

Abstract: A control member for use in a fluid control device is disclosed. The control member may include a through-bore for receiving a valve stem and one or more counter-bores aligned with the through-bore. One of the counter-bores may receive a connection member, such as a retaining nut, for connecting the control member to the valve stem. Accordingly, the connection member may be concealed within the control member and thus prevented from interfering with the fluid flow around the control member. Also disclosed is a fluid control device incorporating the control member and a method of assembling a fluid control device incorporating the control member.

Abstract: A filling element for filling containers includes a tulip that moves, under the influence of a controller, between two positions, one of which seals the container. A first seal seals a junction between the tulip and a filling-element housing. First and second filling-element regions are respectively outside and inside a clean space of a filling machine. The tulip and a dispensing opening are in the second region. The second seal connects by its first free to the tulip. This second seal seals a junction between the tulip and the two filling-element regions.

Abstract: An apparatus for transferring a fluid from and/or to a system, e.g., an air conditioning system, includes a main compartment having at least one pumping device for pumping the fluid from/to the system, an interface module having at least one gauge which is configured for displaying the pressure of the fluid, and a fluid connection fluidly connecting the gauge to the main compartment. The fluid connection is formed in a double conduit design in order to prevent any leakage of the fluid from the fluid connection.

Abstract: A valve for selectively fluidly communicating a first fluid volume and a second fluid volume includes a valve body, an inlet orifice in fluid communication with the first fluid volume, and an outlet aperture in fluid communication with the second fluid volume. The valve also includes an activation member axially movable relative to the valve body. The valve is operable in a first mode in which the valve opens in response to manual actuation of the activation member. The valve is operable in a second mode in which the valve opens when a pressure difference between the first and second fluid volumes reaches a predetermined value, and the valve closes when the pressure difference between the first and second fluid volumes is less than the predetermined value.

Abstract: An isolation valve includes a flow restrictor disposed in a passage and having a piston with a first orifice and a depressurization valve with a second orifice. The valve also includes a solenoid valve assembly having a coil that is selectively energized by a signal from a controller and an armature that is moveable between first and second positions to open and close the first orifice and/or the second orifice. When the coil is energized, the armature moves to the second position to allow vapor to flow through the first orifice, the depressurization valve selectively opens to allow vapor to flow through the first orifice, the second orifice, or both. The two orifices work together to provide controlled vapor flow.

Abstract: A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value.

Abstract: Two-stage, sequential operation protective assemblies are provided, including a primary protective device (20) having an element (32) which shifts in response to operation thereof (preferably a rupturable burst member (35)), together with a secondary protective device (22). An actuating assembly (24) interconnects the primary and secondary protective devices (20, 22) and has an actuating cable assembly (28) preferably including a cable (94) and a frangible component (86). In certain embodiments, an operator (28) for the secondary device (22) may be provided which includes an actuator (106) carried by the cable (94). Upon operation of the primary protective device (20), the cable (94) and frangible component (86) are tensioned and translated in a first direction. The component (86) then severs, which causes operation of the secondary protective device (22).

Abstract: A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value.

Abstract: A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value.

Abstract: Three-position fluid valves for use in downhole environments are disclosed. An example valve includes first, second and third ports, a chamber coupled to the second port, a first sleeve to selectively couple the first port to the chamber and the second port, a second sleeve to selectively couple the third port to the chamber and the second port, and a piston that forms at least part of the chamber and is coupled to the sleeves. The piston moves between a first position in which the piston displaces the first sleeve to couple the first port to the chamber and the second port, a second position in which neither of the first or third ports is coupled to the second port, and a third position in which the piston displaces the second sleeve to couple the third port to the chamber and the second port.

Abstract: The electromagnetic spool valve of the present invention includes a movable linear solenoid section, first and second spools that are coaxially provided in inner space of a valve body so as to switch a state of communication and discommunication among plural ports of the electromagnetic spool valve, a first spring member provided between the first and second spools, and a second spring member provided between a cap member and the second spool. The spring load of the second spring member is set to be greater than the spring load of the first spring member.

Abstract: A valve for a plenum or pipe is disclosed. The valve includes a large butterfly valve element pivotally supported in the plenum by at least one rod. The large butterfly valve element includes an opening for accommodating a small butterfly valve element. The small butterfly valve element is coupled to the rod by a shaft. The shaft includes a recess that accommodates the small butterfly valve element but which includes a clearance between the small butterfly valve element and the shaft to permit limited rotation of the shaft before the small butterfly valve element engages at least one wall of the recess of the shaft. Thus, the combination of the shaft and the small butterfly valve element provide limited flow through the plenum. Further rotation of the shaft, however, results in rotation of the large butterfly valve element to provide greater flow through the plenum.

Abstract: An apparatus includes a valve housing having an inlet port, a first chamber with a first outlet port, and a second chamber with a second outlet port. A first valve opens between the inlet port and the first chamber under a first level of pneumatic pressure at the inlet port. A second valve opens between the first chamber and the second chamber under a second, greater level of pneumatic pressure in the first chamber. A third valve opens between the second chamber and the first chamber under a third level of pneumatic pressure in the second chamber, with the third level being less than the first level.

Abstract: A valve includes a body, a cage, a plug, a stem, a stop ring, and a pilot plug. The cage includes at least one cage port there through allowing fluid communication between the fluid inlet and the fluid outlet. The plug is movable linearly within the cage to allow fluid communication between the fluid inlet and the fluid outlet when the valve is open. The pilot plug is adapted to transfer downward force from the stem to the plug by contacting the stop ring of the plug and thereby urging the plug downward through the cage when the stem moves linearly downward to adjust the valve from the closed position to the open position. In an alternative embodiment, the stem includes a collar adapted to contact the plug and adjust the valve from the closed position to an open position.

Abstract: A fluid transfer system includes a transfer device coupled to a dry break coupler. The transfer device includes a valve assembly moveable between an open and a closed position. The valve assembly includes a main valve and a pilot valve. An actuator controls both the main valve and the pilot valve. A cam plate interconnects the actuator and the valve assembly. The cam plate provides a quick acting shutoff to quickly move the valve assembly to the closed position. A pivotal and rotatable connector couples the transfer device to the dry break coupler. A lock is integrated with the actuator to lock the valve assembly in the closed position.

Abstract: An air conditioning apparatus has a cool-side door device and a heating-side door device between an evaporator and a heater core. The cool-side door device is configured to open and close a cool air passage through which a cool air generated by the evaporator flows. The heating-side door device is configured to open and close a heating air passage through which the cool air flows to be heated by the heater core. At least one of the cool-side door device and the heating-side door device is constructed of a plurality of doors. The plurality of doors is configured to begin to open successively when being opened from a fully closed condition.

Abstract: A cutoff valve having an upstream valve part and a downstream valve part which are assembled in series in a flow passage. Each of the valve elements at the valve parts are formed separably stacking a large diameter first valve element and a small diameter second valve element on each other. The first valve element is formed of elastic material and the second valve element is formed of rigid material. A valve shaft is passed through the center of the first valve element, and the tip of the valve shaft is connected to the second valve element. A first valve element moving component which moves the center part of the first valve element in a direction apart from the second valve element in the state of being engaged with the first valve element when the valve is opened is installed between the first valve element and the valve shaft.

Abstract: Disclosed is an electrically controllable valve accommodating in its valve housing (4) a second valve member (6) that is operable by the first valve member (2) in order to be able to variably adjust a second valve opening cross-section (A2) that is arranged in series to the first valve opening cross-section (A1), and a third valve opening cross-section (A3) that is releasable by means of the first valve member (2) is positioned in series arrangement to the first valve opening cross-section (A1) in order to limit the hydraulic pressure to a mechanically preset value.

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 valve includes a valve body forming a first flow passage and a second flow passage that connects to the-first flow passage through a first opening and a seating element forming a bypass passage that connects the first flow passage and the second flow passage. The bypass passage opening has a smaller cross-sectional area than the first opening. The valve also includes a valve control element that can be repositioned to open both the first opening and the second opening, open the second opening while closing the first opening or close both the first opening and the second opening. The bypass passage may allow fluid to drain through the valve to prevent fluid from building up in the valve. If fluid becomes frozen, the valve may become stuck shut. In some embodiments, the bypass passage opens only if the temperature creates a possibility of freezing in the valve.

Abstract: A pressure regulating valve reduces the increased internal pressure in an aerosol spray can, filled with compressed gas, to a working pressure level for a spray valve (12). A regulating piston (52) is kept in equilibrium by a restoring force, and a sealing point (66, 68) is provided, which is closed at a pressure in the pressure regulation chamber (84) that is above the regulated pressure level. To prevent the precision of regulation from being adulterated by the decreasing internal pressure of the can as its contents are progressively withdrawn, a sealing means (86, 66; 67) is proposed, which seals off one free end of the piston (52, 74) from the internal pressure of the can and the regulated pressure. The variable internal pressure of the can is therefore no longer able to act on any axial face of the piston (52), and despite what may be a smaller piston face area, the precision of regulation is improved.

Abstract: A high resolution flow valve may comprise a first stage valve for allowing a first flow through the flow valve and a second stage valve located concentrically within the first stage valve and also connected to the inlet for allowing an additional second flow through the flow valve.

Abstract: A valve assembly comprises two valves and a single solenoid actuator with only one magnetizing coil that controls both valves. The corresponding magnetic circuit comprises a yoke with only two pole pieces. The valves are arranged concentric to one another. The valve closing element of the outer valve is connected to an armature by means of a sleeve. The cup thus formed receives the armature that is connected to the valve closing element of the inner valve. The pole piece and the armature form a transmission air gap through which the sleeve extends. A coupling air gap is formed between the armatures. The armature and the pole piece form a working air gap. The valves are opened collectively and are able to close independently of one another when the coil is rendered currentless.

Abstract: A leak resistant solenoid valve comprises a valve body having an interior chamber, an inlet, an outlet, and at least one valve seat and valve plug located in the interior chamber. The valve plug has a sealing surface and is axially movable between open and closed positions by a solenoid which acts on the valve shaft on which the plug is carried. The valve further comprises a plug actuating mechanism for moving the plug between the open and closed positions with the solenoid energized and a biasing mechanism for biasing the plug back to the open position when the solenoid is de-energized. The plug is preferably loosely received on the shaft so as to provide self-centering. In one embodiment, the valve has a pair of valve plugs and a pair of valve seats, the seats being axially fixed to one another and the distance between the plugs being variable to provide enhanced sealing.

Abstract: A high capacity coaxial gas valve assembly having a coaxial construction with three valves, in which the assembly opens a smaller second valve prior to opening a larger first valve so that the valve can be operated by a relatively smaller and less expensive coil. In addition, or instead, the valve members may be configured so that the first valve is opened with the impact of a moving element that allows the valve to be operated with a relatively smaller and less expensive coil.

Abstract: A flow control device includes an opening part through which an upstream side of a fluid flow passage is in communication with a downstream side of the fluid flow passage. A valve element closes the opening part and includes a large flow rate controlling valve element capable of adjusting an opening degree of the opening part, a sealing member provided with a valve hole having an open area smaller than the opening part and formed to be capable of being brought into tight contact with a peripheral wall part of the opening part and a small flow rate controlling valve element capable of adjusting an opening degree of the valve hole. A valve drive device rotates to drive the valve element in a closed direction for closing the opening part or in an opened direction for opening the opening part.

Abstract: A solenoid fuel drain valve (2) comprising a valve body (4), having a drain hole (20) and an air inlet opening (22), a solenoid coil (10) and a piston, the drain hole (20) having a drain inlet (20) and a drain outlet (15); and the piston being arranged within the valve body (4) to be moveable between a closed condition, wherein the drain hole (20) and the air inlet opening (22) are sealed, and an open condition, wherein the drain hole (20) and the air inlet opening (22) are open, movement of the piston being controlled by the solenoid (10).

Abstract: A valve includes a housing assembly, a stem assembly and a surge suppression device. The surge suppression device includes an initial flowpath between the valve inlet and the outlet, a primary flowpath between the inlet and the outlet, a first valve assembly and a second valve assembly. The first valve assembly is coupled to the stem assembly and threadably engages the housing assembly and structured to move between a first, closed position wherein the primary flowpath is blocked and a second, open position wherein the primary flowpath is not blocked. The second valve assembly is threadably coupled to the housing assembly and structured to move between a first, closed position wherein the initial flowpath is blocked and a second, open position wherein the initial flowpath is not blocked.

Abstract: A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure gas cylinder and a medical pressure regulator. The valve is provided with first and second valves located within a housing and integrating a pressurization orifice. The initial opening of the valve in an axial direction enables gas to flow through the pressurization orifice at a first flow rate. The full opening of the valve in the axial direction enables the gas to flow through the second valve at a second flow rate, which is much higher than the first flow rate. The controlled pressurization of the gas through the orifice delays the time during which the gas reaches full recompression.

Abstract: A device for controlling fluid flow between an evaporative emission space of a fuel tank and a fuel vapor collection canister that includes a housing, a valve, a seal, an electric actuator, an electric transducer, and an electrical connector. The housing includes a first port, a second port, and a fluid flow path that extends between the first and second ports. The first port is adapted for receiving fluid flow from the evaporative emission space and is at a first pressure level. The second port is adapted for supplying fluid flow to the fuel vapor collection canister and is at a second pressure level. The valve is movable along an axis with respect to the housing between a first configuration, a second configuration, and an intermediate configuration between the first and second configurations. The first configuration permits substantially unrestricted fluid flow between the first and second ports. The second configuration prevents fluid flow between the first and second ports.

Abstract: An expanded-range pintle valve comprising a plurality of stages. Each stage comprises a valve seat and head capable of regulating flow through the valve over its own dynamic range. The valve head of a higher-flow stage includes the valve seat for the next-lower flow stage. The heads and seats for the multiple stages are nested concentrically, the progressively lower-flow stages having progressively smaller diameters. All valve heads except the lowest-flow head have axial and radial bores permitting flow therethrough so that flow may be regulated first by actuating the lowest-flow stage, then by actuating successively higher flow stages. A single pintle shaft connected to a solenoid actuator is adapted to engage each of the valve heads sequentially as the actuator progresses, beginning with the lowest-flow head, thereby extending incrementally the dynamic range of the valve as each stage is successively engaged.

Abstract: A solenoid valve for brake systems, including a spool movably set in a valve housing, provided along its central axis with the first orifice which has a predetermined diameter, and provided at a position around the plunger with a plunger guide having a predetermined depth for allowing the plunger to enter the spool, thus opening and closing the first orifice. A valve seat portion is formed on the inner surface of the bore of the valve housing by stepping the surface. This valve seat portion defines the second orifice therein, and comes into contact with or spaced from the end of the spool to selectively open the outlet, separately from the first orifice when the spool moves in either direction. The second orifice has an inner diameter larger than that of the first orifice. A spool restoring spring normally biases the spool toward the plunger.

Abstract: The invention relates to a valve and a fuel tank provided with a valve for a motor vehicle. Bleeder valves for integrated compensation volumes for fuel tanks are known in the prior art. One disadvantage of known valves is that if the tank is filled slowly during the refueling operation, the fuel compensation volume can fill. The invention aims to provide a valve with a compact construction. To this end a pressure valve (28) is located on the valve (1, 3) which opens if there is a predetermined excess pressure in the fuel tank (30), a refueling venting opening (38) is configured in the valve (1, 3) so that a sealing plate (5) can close the refueling venting opening. The sealing plate (5) has an operational venting opening (42), which can be closed by a displaceable closure element (15) that is displaced according to a position of a float (26) that is located on a float lever (24).

Abstract: A combined alarm test and drain device for a fire protection sprinkler system is disclosed. The apparatus is based on a globe valve and has certain specific modifications for the purposes of draining the system and allowing for flow through a specifically sized orifice under conditions simulating the flow through a sprinkler head having the same orifice size. Fluid flow through the apparatus occurs alternatively under a first set of conditions in a system alarm test mode of operation of the apparatus, and under a second set of conditions in a system fluid drainage mode of operation of the apparatus. A combination of mechanical and hydraulic forces are utilized to control opening and closing of the valve in both the alarm test and system fluid drainage modes of operation. The mechanical force is provided by a spring and the hydraulic force is provided by a fluid pressure differential.

Abstract: A fluid pressure device including a housing (13) defining a high pressure port (31) and a low pressure port (33). The housing defines a shuttle bore (35) and disposed therein is a shuttle valve assembly (51) including a shuttle spool (63). The shuttle spool (63) defines a fluid passage (87) disposed to provide fluid communication from the low pressure chamber (57) to the shuttle outlet port (85) as the shuttle spool moves from its neutral position (FIG. 2) to the end of its centered range of positions (FIG. 3). The low pressure fluid from the chamber (57) is communicated through the fluid passage (87) and acts on a shuttle poppet member (75), aiding the shuttle spool (63) and its shoulder (67) and unseating (opening) the poppet member (75), thus reducing the fluid pressure in the high pressure chamber (55) required to begin opening the shuttle valve assembly (51).

Abstract: A fuel injector comprising a nozzle body having a first bore defining first and second seatings, an outer valve needle being slidable within the first bore and engageable with the first seating to control fuel flow from a first outlet opening. The outer valve needle is provided with a second bore within which an inner valve needle is slidable, the inner valve needle being engageable with the second seating to control fuel delivery through a second outlet opening. The outer valve needle includes a deformable region which is shaped such that, in use, when the outer valve needle is urged against the first seating, the outer valve needle deforms. The deformable region may be shaped such that, in use, when the outer valve needle is urged against the first seating, the outer valve needle deforms to close the first outlet opening.

Abstract: A switchable solenoid valve is disposed between the master cylinder port and the wheel caliper port for an anti-lock brake system. The switchable solenoid valve includes a valve housing, a valve seat that includes a center orifice and a plurality of perimeter bores, and an axially moveable valve plate and tappet for sealing against the valve seat. The switchable solenoid valve is movable between a normally open position, a closed position and an intermediate position that occurs when the brake system is in anti-lock mode. In the open position, both the valve plate and tappet are spaced away from the valve seat to allow unrestricted pressure fluid flow between the master cylinder and the wheel caliper. When the solenoid valve is moved in to the closed position, the valve plate is in face-to-face engagement with the valve seat to seal the perimeter bores while the tappet is simultaneously sealingly engaged with the center orifice.

Abstract: An expanded-range pintle valve comprising a plurality of stages. Each stage comprises a valve seat and head capable of regulating flow through the valve over its own dynamic range. The valve head of a higher-flow stage includes the valve seat for the next-lower flow stage. The heads and seats for the multiple stages are nested concentrically, the progressively lower-flow stages having progressively smaller diameters. All valve heads except the lowest-flow head have axial and radial bores permitting flow therethrough so that flow may be regulated first by actuating the lowest-flow stage, then by actuating successively higher flow stages. A single pintle shaft connected to a solenoid actuator is adapted to engage each of the valve heads sequentially as the actuator progresses, beginning with the lowest-flow head, thereby extending incrementally the dynamic range of the valve as each stage is successively engaged.

Abstract: The pressure control valve is structured such that a first port is formed on one side of a casing, a second port is formed on the other side, and, in the casing, there are disposed not only a positive pressure valve which, when the pressure on the first port side becomes high, can be moved to the second port side to thereby communicate with the second port side, but also a negative pressure valve which, when the pressure on the first port side becomes low, can be moved to the first port side to thereby communicate with the second port side. In the pressure control valve, there is provided flow passage expanding means which, which the positive pressure valve has moved to the second port side beyond a given distance, allows the first port side to communicate with the second port side.

Abstract: An airflow control valve for a clean room having a duct section with a damper positioned within the duct. The damper being capable of an adjustment from an open position to a closed position. The opening and closing of the duct is accomplished through a magnetic coupling such that the duct can remain sealed during operation. The airflow control valve includes a sensor for measuring the airflow rate, so that the duct can be adjusted to maintain one or more predetermined flow rate set-points.