Abstract: New methods and devices for reducing water consumption by restricting the supply pressures at the water consumption points.

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: A flowmeter in which a flow rate can be measured over a wide flow-rate range while an increase in the cost of manufacture thereof is minimized, and a flow-rate controller equipped with such a flowmeter are provided.

Abstract: Systems, methods, and devices are disclosed, including a system that has a trim with a plurality of flow paths. In certain embodiments, each flow path includes a series of stages and an expansion zone disposed in series between each of the stages. The expansion zones are configured to flow a fluid in a direction that is generally perpendicular to directions of flow in both an adjacent-upstream stage and an adjacent-downstream stage.

Abstract: A double check valve (10) with two separate elements (20, 25) individually movable to close the valve and collectively movable to open the valve. The separate elements are independently closing the valve, and collectively controllable to open the valve, to allow pressure release or to allow injection of fluid (e.g. lubricant). In an example, the double check valve includes two separate check valves with a stinger element (30) between them which is operable to internally sting the one check valve when (e.g. by action of) the other check valve is stung by a user (e.g. using a stinger means) thereby to open both check valves individually and the double check valve as a whole.

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 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 high pressure valve for hydrogen gas includes a valve seat and a valve member, which is movable to selectively open and close the valve seat. One of the valve member and the valve seat is formed of austenitic stainless steel, and the other one of the valve member and the valve seat is formed of flexible synthetic resin or soft metal.

Abstract: An electromagnetic valve for a vehicle gas cylinder, said valve comprising: a valve body; an external thread section of the valve body, that can be screwed into an internal thread on the gas cylinder; a section of the valve body protruding into the gas cylinder; a shut-off piston; and electromagnetic control elements which can be used to displace the shut-off piston from a conducting position into a closed position. The valve body comprises a cavity for receiving the shut-off piston and the control elements, said cavity being located inside the thread section and/or in the section of the valve body protruding into the gas cylinder. In order to simplify the disassembly and assembly of one such valve, the mouth of the cavity is arranged on the head end of the valve body located outside the gas cylinder. The shut-off piston and the electromagnetic control elements can be inserted into the cavity through the mouth thereof.

Abstract: A fluid metering device may meter the flow of fluid. The device may have a main chamber and a piston configured and oriented to reciprocate within the main chamber. The piston may be configured and oriented to define a first and a second sub-chamber whose volumes vary inversely as a function of the position of the piston during its reciprocation. The fluid metering device may have a first inlet valve configured to controllably regulate the flow of fluid into the first sub-chamber, a first outlet valve configured to controllably regulate the flow of fluid out of the first sub-chamber, a second inlet valve configured to controllably regulate the flow of fluid into the second sub-chamber, and a second outlet valve configured to controllably regulate the flow of fluid out of the second sub-chamber.

Abstract: A high pressure storage and delivery system having a fail-safe vacuum actuated valve is provided. In particular, through the innovative design of the vacuum actuated check valve, the system can accommodate up to three times the volume of product in similar size cylinders.

Abstract: A gas regulator includes a housing and a pressure regulator positioned within the housing along a first axis for controlling the pressure of gas received from a pressurized source. A flow meter controls the flow rate of the gas received from the pressure regulator. The flow meter is positioned relative to the housing along a second axis, transverse to the first axis. An outlet nozzle member has a nozzle stem and is positioned along the first axis. The outlet nozzle member receives the gas from the flow meter and delivers the gas through the nozzle stem.

Abstract: There is provided a fluid control apparatus which can reduce the number of members and can improve the assembling operation efficiency. A pressure indication device 4 to be replaced with a relatively-higher frequency is coupled to a base block 5 existing thereunder through male screw members 17 from above. An on-off valve 6 to be replaced with a relatively-lower frequency has, at its lower portion, a block-shaped main body 6a formed integrally therewith. The main body 6a of the on-off valve 6 is coupled to the base block 5 through male screw members 18 in the forward and rearward directions.

Abstract: A double block and bleed valve assembly having a valve body with a bore. The bore has an opened and closed position by two valve arrangements to control fluid flow along a pipeline.

Abstract: A soft start device for compressed air systems comprises a primary inlet at which compressed air at a primary pressure may be supplied, the primary inlet being connected with a secondary outlet able to be coupled with a load, by a valve circuit, at which compressed air is taken at the secondary pressure lower than or equal to the primary pressure, a principal valve placed between the primary and secondary outlet, said principal valve being able to be shunted by a bypass, a choke device being placed in the bypass, the principal valve and the choke device together with further valves of the valve circuit being connected together in a circuit and the valve circuit placed in a standard venting switching setting that the secondary outlet is vented.

Abstract: A hydraulic system including a control valve and a steering control assembly. The steering control assembly includes a steering control unit and a priority flow divider contained in a single unitary casing. The steering control assembly is attached adjacently with and directly to the control valve by means of an interface that fluidly connects the control valve with the steering control assembly.

Abstract: An additive unit for a central heating or hot water system is connected in line to conduits of the system. The additive unit comprises a chamber having an inlet connected to a first conduit and provided with a valve, and an outlet connected to a second conduit and provided with a valve. The chamber is provided with a drain tap and an access port with a closure cap. A bypass conduit extends through the interior of the chamber. The inlet valve and the outlet valve switch flow from a normal route through the chamber to a bypass route through the bypass conduit. Fluid isolated in the chamber can be removed via a drain tap and an additive/top up fluid introduced via a port. Normal flow can then be restored by operating the valves.

Abstract: Provided are a microfluidic device and a microfluidic network formed by connecting such microfluidic devices. The microfluidic device can equalize the flow of multiple microfluids in a chamber in parallel to thereby have an equal flow rate when the microfluids transferred through different flow channels join in the chamber having a changing cross-sectional area. The microfluidic device includes: multiple flow channels formed between an upper substrate and a lower substrate to transfer the microfluids and including inlets for injecting the microfluids in one side and fluid stopping surfaces for stopping the flow of the microfluids in the other side; a pressure controlling flow channel for removing a pressure difference between the microfluids; a fluid converging part for converging the microfluids; and a chamber composed of hydrophilic surfaces and hydrophobic surfaces disposed alternately in a flow direction so that the microfluids join and flow in parallel and equal.

Abstract: A process apparatus including a chamber, a pump, and a transportation system set between the chamber and the pump is provided. The transportation system has a pipe, a pressure control valve, and a shielding unit. The pipe has an input end connected to the chamber and an output end connected to the pump to pump fluids out of the chamber through the pipe. The pressure control valve between the input and output ends is disposed on the pipe and has a valve plate to adjust a fluid flow in the pipe. The shielding unit between the input end and the pressure control valve is disposed on the pipe and has a shielding plate to be switched between an original position and a shielding position. The shielding plate at the shielding position permits conveyance of fluids in the pipe and prevents certain liquid particles of the fluids floating in the pipe.

Abstract: [PROBLEM] To provide a directional control valve assembly, in which a check valve for controlling a flow rate of pressure oil to be guided to a directional control valve as a main valve and a control means for limiting an opening degree of the check valve by a pressure are integrated with the directional control valve and therefore, a flow hardly occurs in the pressure oil that produces the pressure.

Abstract: A main control valve is actuated by a pilot fluid control signal between open and closed positions to supply fluid to an actuator such as a valve actuator. A stack of logic control valves is supported on the main valve- and controls the flow of the pilot signal. Each of the logic control valves has a housing of common design. Intermediate flow-directing plates of different designs provide fluid communication between adjacent housings. The stack has a common pilot feed passage and a common exhaust passage that are each defined by an annular clearance around supporting tie bars that pass through bores in the stack. Each plate has apertures that form part of the exhaust and pilot feed passages and an aperture that interconnects the returning pilot signal with the pilot inlet of the next valve in the stack. The arrangement allows for simplification of the design of the apparatus with a single housing design and multiple plate designs.

Abstract: A control device for and a method of controlling a gearbox having a pressure-limiting device connected to a pressure medium source. A first controllable valve device is connected downstream of the pressure-limiting device and an actuating device is connected further downstream and adjusts the gearbox. A second controllable valve device is connected directly to the pressure medium source, via a supply line, and another actuating device is connected downstream of the second controllable valve device. An electric control device is provided for actuating the controllable valve devices and a sensor is connected to the electric control device for measuring pressure of the pressure medium in the supply line. The electric control device is connected to the second controllable valve device such that the second controllable valve device and the further actuating device are controlled by the pressure of the pressure medium in the supply line.

Abstract: A leak detection system for detecting a leak within a duplex valve assembly is disclosed. The duplex valve assembly includes a first valve, a second valve and an intermediate fluid flow passageway fluidly interconnecting the first valve to the second valve. The leak detection system includes a means for indicating whether the first valve is maintained in a closed position or an open position, a means for indicating whether the second valve is maintained in a closed position or an open position, and a pressure change detector within the intermediate fluid flow passageway. The pressure change sensing means is at least partially positioned within the intermediate fluid flow passageway for detecting a pressure change within the intermediate fluid flow passageway.

Abstract: An opening/closing of a plurality of valves are controlled so that a plurality of gases flow into a chamber in an operation of a semiconductor manufacturing apparatus, and the opening/closing of the plurality of valves are controlled so that a gas A flows into mass flowmeters in an inspection of a mass flow controller MFC 2?. Therefore, the inspection can be achieved while maintaining the connection of mass flow controller MFC 2? to the semiconductor manufacturing apparatus.

Abstract: An arrangement is provided for feeding a liquid additive from a receptacle into a fuel line or into an exhaust line of an internal-combustion engine of a motor vehicle by way of a blockable feed line leading into at least one of the above-mentioned line and by way of a pump which at least temporarily generates a feed pressure in the feed line. The receptacle can be filled with additive from a larger storage tank also accommodated in the motor vehicle by way of a connection line that can be blocked. The feed line branches off the connection line between the receptacle and the storage tank. The pump is installed in the receptacle or between the receptacle and the branching-off of the feed line into the connection line. The connection line can be shut-off in the storage tank or between the storage tank and the branching-off of the feed line.

Abstract: A valve is provided including a first valve member and a second valve member. The first valve member includes a first step and a first orifice adjacent the first step. The second valve member includes a second step and a second orifice adjacent the second step. The second valve member is movable relative to the first valve member between an open position, in which the first orifice is fluidly connected the second orifice, and a closed position, in which the first orifice is substantially fluidly disconnected from the second orifice. The first and second steps are fluidly connected to the second orifice and substantially fluidly disconnected from the first orifice when the second valve member is in the closed position, and the first and second steps are fluidly connected to the first and second orifices when the second valve member is in the open position.

Abstract: A battery compartment assembly includes a housing and a lid configured to be removably attached to the housing. The lid includes a pair of hinges that engage a corresponding pair of openings in the housing, and a latch that engages a ridge on the housing when the lid is in the closed position. The lid also includes a pair of contacts that extend from the lid to mate with connectors of a control unit to be powered by the batteries in the assembly. A spring is included in the housing for connecting to a positive terminal of a first battery and a negative terminal of a second battery.

Abstract: A fluid flow controller (1) comprises a variable aperture flow control valve (5) having an inlet to receive fluid from a supply source and an outlet to deliver fluid along a conduit (6). Downstream of the valve (5) is a back-pressure regulator (8), which in turn delivers fluid to an outlet (9), whilst a permanently open orifice (11) is connected to the conduit (6) upstream of the regulator and provided with an exhaust outlet (12), the characteristics of the valve (5), regulator (8) and orifice (11) being so selected that upon a slight opening of the valve (5), the regulator (8) maintains a closed condition, while further opening of the valve (5) raises the fluid pressure at the regulator (8) which commences opening, to provide a continuous exhaust flow at the exhaust outlet (12), to extend the satisfactory operating range of the flow control valve (5) down to very low flow rates. The controller (1) is suitable for use with a sulphuric acid dewpoint monitor.

Abstract: A gas valve may include a valve body and a valve member disposed within the valve body. A resilient sealing ring may be disposed within the valve body such that the valve member achieves a closed position when the valve member contacts the resilient sealing ring. In some instances, a gas valve may include both an upper resilient sealing ring and a lower resilient sealing ring. The upper resilient sealing ring and the lower resilient sealing ring may both permit overtravel.

Abstract: A mouthpiece of a water bag includes a flexible body with a tunnel therein, a closed end at an end of the flexible body, and an elongated crack on the closed end adapted to communicate the tunnel, whereby the crack is closed at a normal condition and is opened when the flexible body is compressed along an elongated direction of the crack, a cap detachably covering the closed end of the flexible body, which has a strip and a ring fitted to a slot on the flexible body. The cap may isolate dust from the close end of the flexible body that keeps the crack clean. The crack is closed in a normal condition, and the ring fitted to the flexible body may restrict the flexible body to ensure the crack closed.

Abstract: A chiller system (10) includes a compressor (12), a condenser (14), a cooler (20), a bubbler tube (22) and a float valve (18) within the condenser (14). A solenoid valve (26) is disposed within the bubbler tube (22) and is adapted to selectively open and close the float valve (18) such that a refrigerant flow to the cooler (20) is throttled. The throttled refrigerant flow results in a reduction in system pressure which further results in a higher viscosity oil delivery to the compressor (12) by an oil management system (30).

Abstract: Sink spray head with supply jet variation and flow rate regulation, comprising a body defining at least two distinct water supply areas in communication with a distribution chamber controlled by a diverting cut-off driven by means of two distinct selection keys accessible outside the body, a cut-off being also provided for the regulation of the water flow rate. The keys are operatively connected to the regulation cut-off.

Abstract: A steam valve in accordance with the present invention is the steam valve that houses a first valve device 21 composed of a valve seat, a valve body, a valve rod, and a driving device, and a second valve device 22 composed of the valve seat, the valve body, the valve rod, and the driving device, combined with each other in the valve casing 23, and a closing portion 41 to block a part of a main steam flow flowing from outside to inside of a strainer is formed in the strainer 27 that is housed in the valve casing 23 and that surrounds the valve body 29 of the first valve device. According to the above described configuration, the steam valve that is aimed to further decrease a pressure loss can be provided by effectively controlling the steam flow in the strainer housed in the valve casing.

Abstract: The invention relates to an expansion valve block which is equipped with coordinated means (8) for isolating the high-pressure circuit (3) and the low-pressure circuit (4) such that, when the gas delivery inlet is opened and closed, the two circuits are automatically controlled using the sequence that best guarantees the immunity of the installation.

Abstract: The invention relates to a gas filling and distribution head (2) which is intended to be disposed in a hole in a pressurised gas storage tank. The inventive head (2) includes a mounting segment (21) which is intended to be housed in the hole in the tank and an expansion segment which houses a pre-expansion device (22), said pre-expansion device (22) being arranged in relation to the mounting segment (21) such as to be housed at least partially inside the tank when the head is in the mounted position. The head (2) also includes: a filling circuit which extends between a first end which is equipped with a filling hole (6) and a second end which is intended to communicate with the interior of the tank, and an extraction circuit which extends between a first end which is intended to communicate with the interior of the tank and a second end which is equipped with an extraction hole. The invention is characterised in that the filling hole (6) is aligned with the extraction hole.

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

Abstract: A fuel cell system includes a first shut valve capable of shutting off a gas flow in a gas path where a fuel cell gas flows; and a second shut valve arranged more towards the downstream side of the gas flow than the first shut valve, and capable of shutting off the gas flow. In each of the first shut valve and the second shut valve, sealing is performed by intimate contact between a movable member and a seal member and a gas pressure supplied from the upstream applies a force to the movable member to bring it into intimate contact with the seal member. A deformation degree by an external force of the same intensity is set greater in the seal member of the second shut valve than in the seal member of the first shut valve.

Abstract: A steam valve assembly has a main-steam stop valve, and a steam control valve connected downstream to the main-steam stop valve via an intermediate flow path. The two valves each has a casing having an inlet port directing horizontally, and an outlet port directing vertically. The valve bodies and the valve stems move up and down in the casings to open and close the flow paths in the valves. The intermediate flow path is configured to guide main steam from the outlet port of the main-steam stop valve in vertically downward direction to the inlet port of the steam control valve in horizontal direction.

Abstract: In the assembly of the invention, the assembly includes adapter means designed to connect the transmission member and the energy source and to ensure good transmission of energy between them. The adapter means comprise means for locking the energy source in rotation in the device and means for the angular indexing of the source in the position in which it is locked in rotation in the device. The invention is very suitable for gas fastening devices.

Abstract: An air intake valve apparatus for pneumatic tool, configured in an intake port of a pneumatic tool for controlling air circulations, mainly comprises a valve base configured in the intake port of the pneumatic tool, a stem configured through the valve base inside capable of shifting to a air-blocking position and a air-exhausting corresponding to the valve base and a flexible component propped the stem for keeping the stem on the air-blocking position regularly, wherein the stem has a first portion, a second portion and a mid-reducing portion, the mid-reducing portion is coupled to the first portion and the second portion respectively with different transiting surfaces so as to maintain the force driving the stem in constant no matter the air pressure entering the valve base is lower or higher.

Abstract: A main valve reduces an unregulated pressure of a high-pressure gas to a regulated pressure by being interlocked with a diaphragm, which receives the regulated pressure within a pressure regulating chamber and is displaced. A subsidiary valve is interlocked with the main valve through a plunger and reduces the unregulated pressure of the high-pressure gas to the regulated pressure. The subsidiary valve is located such that the force, which accompanies a pressure loss occurring at the subsidiary valve and which the subsidiary valve receives, cancels the force, which accompanies the pressure loss occurring at the main valve and acts upon the plunger. An adjustor adjusts a pressure loss value occurring at the subsidiary valve so as to be equal to the pressure loss value occurring at the main valve.

Abstract: When supplying a fluid to a first flow channel (11a) of a valve (1), air is introduced into an air cylinder (3a) from an air introduction channel (35a). An operating plate (5a) thus slides and drives a shaft (4a) to move backward to such a position that a second sealing surface (8a) of a sealing plate (6a) abuts against a wall (13a). An air cylinder (3b) is moved forward to such a position that a sealing surface (7b) of a sealing plate (6b) abuts against a wall (12b), thereby sealing an opening (14b).

Abstract: Modulating gas valves and systems for modulating gas flow to gas-fired appliances are disclosed. An illustrative modulating gas valve can include at least one main valve adapted to regulate the flow of gas through a main gas conduit, at least one regulator for regulating the gas pressure outputted by each main valve between a first gas pressure and a second gas pressure, and a modulator adapted to variably modulate the gas outputted by the gas valve at a pressure between the first and second gas pressures. The modulator can be used to modulate the main gas valve or valves between an infinite or discrete number of positions.

Abstract: An x to pressure converter that uses valves oscillating between open and closed positions in a pulse width modulated mode, to force the output pressure to equal the input X.

Abstract: A liquid lifting assembly for sucking liquid to a higher place, comprises a suction portion having a body, check valves, a suction head, and a pressure tank; the body being formed by a plurality of tubes; a pressure end, a suction end and a releasing end being extended from the body; the suction end and the releasing end are installed with check valves; the pressure end of the body being communicated to a pressure tank; the pressure tank being a hollow tank with air therein; a first check valve being installed between the releasing end and the body; the suction end being connected to a suction head through a second check valve. In use, the suction device sucks the liquid to the body; and the liquid in the pressure tank will give a pressure to push the liquid to flow through the check valve to the releasing end.

Abstract: A tank manifold assembly for use in combination with fuel tanks of Hydrogen fuel cell-powered vehicles. The manifold assembly incorporates a regulator, an excess flow valve, a manual shutoff valve, and ports to receive separate components. The separate components may include, by way of example, a thermal relief valve, a pressure sensor, a pressure relief valve, a check valve, thermal temperature sensors, and a low pressure solenoid valve. The tank assembly is versatile and easily customized to particular applications.

Abstract: An article includes a microfluidic channel for moving fluid therethrough and at least one microfluidic actuator coupled to the microfluidic channel. The microfluidic actuator includes a deformable substance configured to enter the microfluidic channel to control fluid flow through the microfluidic channel. A method includes applying pressure to a deformable substance of a microfluidic actuator coupled to a microfluidic channel, such that the deformable substance of the microfluidic actuator enters the microfluidic channel. Another method includes inserting a needle into a microfluidic channel, applying pressure to a deformable substance of a microfluidic actuator coupled to the microfluidic channel, such that the deformable substance of the microfluidic actuator enters the microfluidic channel to form a seal around the needle, and injecting or extracting a fluid through the needle.

Abstract: The invention relates to an automatic precision pipetting device. The inventive device comprises at least two cylinder/piston-type pumping units (1, 2), the rods of which are rotated by means of a common motor unit (MP). Moreover, the pumping chamber of each of the pumping units (1, 2) is connected to a circuit comprising, successively, a conduit that opens into a container of rinsing liquid (RL), three successive solenoid valves (EV1, EV2, EV3) and a portion of circuit which connects the second solenoid valve (EV2) with the pipetting means (AP). The larger pumping chamber is connected in the part of the circuit that provides the connection between the two solenoid valves (EV1, EV2) while the second pumping chamber is connected to the above-mentioned portion of circuit by means of a connector, said portion of circuit comprising a solenoid valve (EV3) which is disposed between said connector and the aforementioned pipetting means.

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: The gas valve assembly includes a housing with a bore and a main valve body and a main valve stem mounted therein. The valve body has a fluid passage fluidly connecting the inlet and one of a housing and valve body outlet with the valve stem mounting a valve seat and being movable for blocking fluid flow through the passage. In two embodiments, the housing is threadable to the neck portion of a vessel for the inlet opening to the vessel interior and the main valve body mounts a manual operated shut off valve extending within the valve body to selectively block fluid flow through the passage and an excess flow valve to block fluid flow through the passage when the flow to the outlet is greater than desired. The last two mentioned valves include a common piston in the fluid passage.