Abstract: A gas distribution system in an airplane has improved reliability of operation with a first supply line (7) and a second supply line (9) for pressurized gas connected to a pressurized gas source (2) via a branching site (6) with a second shut-off valve (10). The pressure in the supply lines (7, 9) is determined with a pressure-measuring means (24). An evaluating device (24) for the measured pressure signal is provided for sending a closing signal to the shut-off valve (8, 10) of the supply line (7, 9) in which a pressure drop of consequence occurs.

Abstract: A water supply failure protection valve is connected to hot and cold water supplies. The failure protection valve is responsive to the loss of cold water supply pressure to shut off all water flow. The failure protection valve is responsive to the loss of hot water supply pressure to permit cold water flow through both a cold water flow path and a hot water flow path so as to ensure a substantial flow of water to a downstream fixture. The supply failure protection valve may be integrated with a thermal mixing valve to provide water at a preselected temperature.

Abstract: A water supply failure protection valve is connected to hot and cold water supplies. The failure protection valve is responsive to the loss of cold water supply pressure to shut off all water flow. The failure protection valve is responsive to the loss of hot water supply pressure to permit cold water flow through both a cold water flow path and a hot water flow path so as to ensure a substantial flow of water to a downstream fixture. The supply failure protection valve may be integrated with a thermal mixing valve to provide water at a preselected temperature.

Abstract: A method and system for controlling the rate of fluid flow. A flow restrictor having known pressure drop and flow rate characteristics provided in a passage through which the fluid, preferably a gas, flows. An upstream pressure sensor determines the pressure of fluid in the flow passage upstream of the flow restrictor. A downstream pressure sensor determines the pressure of fluid in the flow passage downstream of said flow restrictor. A pressure regulator adjusts the pressure of fluid upstream or downstream of the flow restrictor based on the pressure drop across the flow restrictor so that the actual pressure drop across the flow restrictor closely corresponds to the pressure drop associated with a desired rate of fluid flow.

Abstract: The invention provides a jet pump comprising a housing containing a nozzle into which an injected fluid is introduced, the housing also possessing a suction orifice, the pump comprising, upstream from the outlet of the nozzle, an auxiliary chamber associated with two sealing elements, each sealing element being adapted to open when the pressure of the injected fluid exceeds a predetermined level, the first sealing element opening at a first pressure level, the second sealing element opening at a second pressure level greater than or equal to the first.

Abstract: The subject invention is a valve for regulating the viscosity of fluid utilized by an integrated drive generator (IDG). The valve includes a housing defining a bore having a first inlet supplying “cold” hydraulic fluid at a first viscosity and a second inlet supplying “hot” hydraulic fluid at a second viscosity. A spool valve disposed within the bore has at least one land to proportionally control the flow of hydraulic fluid through the inlets. Hydraulic fluid from the first and second inlets mixes within the valve and exits the valve through an outlet at an optimum viscosity for the operation of the IDG. A flow restrictor creates a pressure force on the spool valve that is proportional to the viscosity of the hydraulic fluid flowing to the IDG.

Abstract: A high flow valve assembly and a low flow valve assembly are in parallel flow relation between an inlet and an outlet of a flush controller. The valve assemblies are opened by solenoid operated pilot valves under the control of a microprocessor based flush control system. A turbine directly measures flow through the low flow valve assembly by providing pulses to the microprocessor, and the control system counts pulses and computes flow through the high flow valve assembly to perform a flushing operation including an initial siphon trap flushing high flow portion and a subsequent trap reseal low flow portion. Corrections are made to the pulse count to correct for partial valve open conditions and other variables. An override switch provides a signal to the control system for a flush operation A user detection system includes a pair of emitters and a pair of detectors defining an array of intersecting detection points in a skewed plane in which the control system can locate the position of a user.

Abstract: A high flow valve assembly and a low flow valve assembly are in parallel flow relation between an inlet and an outlet of a flush controller housing. The valve assemblies are opened by solenoid operated pilot valves under the control of a microprocessor based flush control system. A turbine directly measures flow through the low flow valve assembly and the control system computes flow through the high flow valve assembly to perform a flushing operation including an initial siphon trap flushing high flow portion and a subsequent trap reseal low flow portion. A push button is pressed to one of two override positions either to provide a signal to the control system for a normal flush operation or to open the high flow valve assembly independently of the control system for an emergency flush operation. A user detection system includes a pair of emitters and a pair of detectors defining an array of intersecting detection points in a skewed plane in which the control system can locate the position of a user.

Abstract: A portable fueling control system is provided for delivering bulk fuel to a vehicle from a pressurized source. The portable system includes a fluid driven power source for operating auxiliary instrumentation of the system. An inlet receives the bulk fuel from the pressurized source. The inlet has a primary fluid path and a secondary fluid path. A first flow rate control is in fluidic communication with the primary fluid path for adjustably controlling the flow rate of bulk fuel from the pressurized source to a system outlet. A first monitor is operably linked to the secondary fluid path and the first flow rate control. The first monitor is responsive to the flow rate of the secondary fluid path for actuating the first flow rate control to vary the pressure difference across the first flow rate control.

Abstract: In the reaction process, at least two educts A, B are divided by a system, assigned to each of them, of slit-like microchannels 1a, 1b into spatially separate fluid lamellae, which then emerge into a common mixing and reaction space 4. The fluid lamellae here have a thickness <1,000 &mgr;m, preferably <100 &mgr;m, at a width thickness ratio of at least 10. It is essential here that educts A, B can emerge as thin fluid lamellae 6a, 6b into the mixing/reaction space 4, each fluid lamella 6a of an educt A being led into the mixing/reaction space 4 in the immediate vicinity of a fluid lamella 6b of another educt B. The adjacent fluid lamellae 6a, 6b then subsequently mix by diffusion and/or turbulence. As a result, the mixing operation is accelerated substantially compared with conventional reactors. In the case of rapid chemical reactions, the formation of undesirable by-products or secondary products is largely prevented in this manner.

Abstract: A fuel metering arrangement has a fuel flow metering valve, a pressure drop regulator valve arranged and operable to maintain the pressure drop across the metering valve substantially constant and a throttle device arranged and operable to regulate fuel flow upon failure of the regulator valve in an insufficiently closed or fully open position.

Abstract: On-line rheological measurements are made on a process flowing material, such as a polymer melt, utilizing a rheometer of the type in which an inlet pump delivers a relatively large volumetric flow of diverted process material from a process main stream to an inlet site located in very close proximity to the entrance of a capillary passage, and a metering pump draws a smaller portion of the volumetric flow of the diverted material from the inlet site through the capillary passage for return to the process main stream. The viscosity of the diverted material is measured as a function of the rate of flow of the material through the capillary passage and the pressure drop between spaced apart locations along the capillary passage.

Abstract: A method and system for controlling the rate of fluid flow. A flow restrictor having known pressure drop and flow rate characteristics provided in a passage through which the fluid, preferably a gas, flows. An upstream pressure sensor determines the pressure of fluid in the flow passage upstream of the flow restrictor. A downstream pressure sensor determines the pressure of fluid in the flow passage downstream of said flow restrictor. A pressure regulator adjusts the pressure of fluid upstream or downstream of the flow restrictor based on the pressure drop across the flow restrictor so that the actual pressure drop across the flow restrictor closely corresponds to the pressure drop associated with a desired rate of fluid flow.

Abstract: The present invention provides a gas vent system for a vacuum chamber. The particle placed onto the wafer after loading out from a vacuum chamber can be greatly reduced by the system design. The gas vent system has a gas supply, an anti-vibrating tube, a gas regulator, a first line, a second line, a vent valve, and a filter. The anti-vibrating tube is connected after the gas supply for transferring gas without introducing vibration. The gas regulator is connected after the anti-vibrating tube for controlling a flow rate of the gas. The first line is connected after the gas regulator and has a first metering valve. The second line is connected after the gas regulator and is also connected in parallel with the first line. The second line has a second metering valve and an in-line valve in series. The vent valve is connected after the first line and the second line. The filter is connected between the vent valve and the vacuum chamber.

Abstract: A valve mechanism for use in a hydrostatic transmission including a closed porting system for hydraulic fluid and a sump is provided. The valve mechanism includes a valve body mounted to the hydrostatic transmission whereby the valve body is open to the closed porting system at one end thereof and open to the sump at the other end thereof. The valve body has a first open position whereby hydraulic fluid is pulled into the closed system from the sump when the pressure of the fluid in the closed system is below a first pressure, a second open position whereby hydraulic fluid exists the closed system to the sump when the pressure of the fluid is at a second pressure higher than the first pressure, and a closed position when the pressure of the hydraulic fluid in the closed system is at a third pressure higher than the second pressure.

Abstract: In a counter balance valve, a valve body is provided with a valve bore having first and second pump-side ports, first and second motor-side ports and an auxiliary port. A spool is slidably fitted in the valve bore in a longitudinal direction thereof to establish and block communication between the respective ports. Left and right springs maintain the spool at a neutral position in which the respective ports are closed. A left pressure receiving chamber shifts the spool by a pressure oil supplied therein to a first travelling position at which the first pump-side port and the auxiliary port are communicated with each other and the second pump-side port and the second motor-side port are also communicated with each other.

Abstract: A cooling circuit includes a valve device (1, 1', 1") for a separate heat exchanger (42), especially of an internal combustion engine (48). To achieve a combined pressure limitation and pipe or hose break valve, a valve body (6, 35, 50), upon reaching a coolant throughput for maximum heat transfer in heat exchangers (42) located downstream, is actuated as a function of delivery pressure into an engaged position with a valve seat (5, 51). A throttle passage (7, 36, 52) maintains a coolant throughput that corresponds to maximum heat transfer. In the event of a pipe or hose break, the valve body (6, 35, 50) serving as part of a pipe or hose break is locked in a closed position.

Abstract: A four-port changeover valve in an emergency water storage tank facility for changing over the flow paths of the water main and to the tank by axially moving the valve rod. Three valve seats are formed axially in a valve box. The valve rod extends through the valve seats. As the four-port changeover valve, the three valve seats can be selectively opened and closed by one and the other of two valve bodies. The water storage tank is connected to a first and a fourth chamber, while the water main is connected to a second and a third chamber. The valve rod is raised and lowered by the cylinder. In a normal state when the water pressure in the water main is at a required level, the valve rod rises so that the tank and the water main communicate with each other.

Abstract: In a load holding valve L, comprising a check valve R and a pressure limiting valve D in a housing chamber which is common to said two valves, a seat insert 13 has provided therein a valve seat 19 for a closure member 4 of the pressure-limiting valve D and a sealing surface 15 for a check-valve closure member 16, and an opening piston 9, which is coupled to the closure member 4, is provided in a pilot chamber 10, an effective area of said closure member 4 being, in a direction opposite to the direction of spring loading, adapted to be acted upon by the pressure to be limited, the opening piston 9 is formed integrally with the closure member 4 and is provided with a pressure surface in the pilot chamber 10 which is slightly smaller than the cross-sectional area of the valve seat 19, and the valve seat 19 defines in combination with control passages K formed in the closure member 4 a stroke-dependent quantity control device M.

Abstract: A dual pressure gas supply controller system is disclosed which provides apparatus and methods for supplying gas from a gas supply source to one or more gas-burning apparatus requiring two different gas pressure levels. According to the invention, a first gas pressure is supplied the gas-burning apparatus during a first time period, while a second lower gas pressure is supplied to the gas-burning apparatus during a second time period for the purpose of conserving gas. This is accomplished through the use of first and second gas pressure regulators coupled in parallel between the gas supply source and the gas-burning apparatus. A gas pressure control valve is utilized to stop the flow of gas from the first gas pressure regulator and enable the flow of gas from the second gas pressure regulator during the second time period.

Abstract: An automatic pressure activated diverter valve with check valve action, made from pressure rated components, that provides flow from one or more independent flow lines to outside storage tank and back to flow line when the flow line is pressurized, without affecting unpressurized zones.

Abstract: A valve mechanism for use in a hydrostatic transmission including a closed porting system for hydraulic fluid and a sump is provided. The valve mechanism includes a valve body mounted to the hydrostatic transmission whereby the valve body is open to the closed porting system at one end thereof and open to the sump at the other end thereof. The valve body has a first open position whereby hydraulic fluid is pulled into the closed system from the sump when the pressure of the fluid in the closed system is below a first pressure, a second open position whereby hydraulic fluid exists the closed system to the sump when the pressure of the fluid is at a second pressure higher than the first pressure, and a closed position when the pressure of the hydraulic fluid in the closed system is at a third pressure higher than the second pressure.

Abstract: A check valve for use in an hydraulic control circuit includes separator plates each having an orifice of predetermined size and a ball retained between the separator plates, adapted to close one of the orifices and to open a port and parallel passages communicating with a chamber in which a ball is retained. The ball chamber is in continual communication with the orifice that is not closed by the ball.

Abstract: A control device for controlling and monitoring two fluid valves, wherein each fluid valve comprises a drive means which is adapted for activation by an associated control signal, and a movable valve element which is biassed toward a first position in which fluid flow through the valve is prevented and which can be driven by said drive means to a second position in which fluid is able to flow through the valve, a first switch which is actuable by the displaceable element of the first valve, a second switch which is actuable by the displaceable element of the second valve, wherein each switch is biassed towards a first position and each switch can be driven to a second position when the displaceable element of the associated valve takes its second position.

Abstract: The invention is a system for drawing off multiphase effluents. The system includes a drum; at least one assembly, located in the drum, for drawing a multiphase fluid contained in the drum to outside the drum, the at least one assembly including a section through which the multiphase fluid is drawn to flow outside the drum, and extending over a substantial portion of a height of the drum; at least one sensor for sensing at least one flow condition of the multiphase fluid and for providing a signal representing each sensed flow condition of the multiphase fluid; and a mechanism, coupled to the at least one sensor, for modifying the section of multiphase flow as a function of each signal representing a sensed flow condition.

Abstract: A system and method for selectively refueling a plurality of vehicle storage tanks with compressed natural gas (CNG) are provided that utilize a compressor system operable at suction pressures ranging from about 330 to about 3600 psig and discharge pressures ranging from about 330 to about 4500 psig in combination with means for temporarily storing CNG at an intermediate storage pressure of from about 330 to about 4500 psig, preferably from about 1700 to about 2700 psig, means for selectively filling vehicle storage tanks with CNG from an inlet source, from the compressor discharge and from the intermediate storage tanks, and means for selectively supplying CNG to the compressor inlet at either the available line pressure or the intermediate storage pressure.

Abstract: A refueling valve for a motor vehicle includes an integrated control valve therein having a vent tube that has a first valve seat on one end thereof and a second valve seat on the other end thereof that cooperate respectively with a float valve and with a diaphragm controlled pressure responsive cut-off valve that is operative in accordance with a sensed pressure condition in a fuel filler pipe to control fuel venting to a charcoal canister and to prevent the escape of fuel vapors from a filler neck. The diaphragm is communicated with a pressure sensing port in the filler neck below a trap door therein that opens during refueling and is closed once the fuel nozzle is removed. The pressure sensing pot is located upstream of a venturi that produces negative pressure at the pressure sensing port and on the diaphragm member. A spring biases the cut-off valve normally closed.

Abstract: A slow start valve has a first valve member for opening and blocking a flow passage between an inlet port and an outlet port and a second valve member for opening and blocking a flow passage between the outlet port and an exhaust port, both being integrally formed in a spool without adopting a poppet construction, wherein the actuation of the spool by force of compressed air causes slow supply, quick supply and exhaust. Compressed air supplied via a solenoid three-way valve causes a piston to move downward along with the spool in contact therewith and then compressed air supplied via a passage causes the spool to move further downward, a second valve opening being immediately shut off with the second valve member.

Abstract: The present invention relates to a double-valved variable pressure device for hydrocephaly having a vertical capsule with sloped ends ending in upper and lower coupling sectors appropriate for connection to a proximal catheter and a distal catheter that constitute the input and output for a cephalo-rachidian liquid through the body. The liquid or volume has its pressure controlled by means of two valves which maintain a constant drained volume along a wide range of pressures the device is submitted to.

Abstract: A method for qualifying a chemical distribution system and components used therein to ensure that the quantity of contaminants extracted from the system by the chemical is below a predetermined specification level. A volume of the chemical is continuously circulated through the system. The concentrations of extracted contaminants in the chemical are periodically measured, and the contaminant extraction rate determined as a function of the measurements. The system is qualified for production when the extraction rate has decreased to the specification level.

Abstract: A tank venting system includes first and second tank valves and a valve for controlling venting from valves to vapor recovery canister. The valve includes a housing containing a first valve assembly for controlling venting of the first tank valve and a second valve assembly for controlling venting of the second tank valve. A vent conduit defines a bleed passageway for dissipating pressurized fuel vapor in a housing flow tube to a filler neck through a signal port and a passageway. A tube includes a vacuum-relief passageway and a valve for regulating flow of ambient air from the signal passageway into the housing when a cap is off the filler neck.

Abstract: A valve mechanism for use in a hydrostatic transmission including a closed porting system for hydraulic fluid and a sump is provided. The valve mechanism includes a valve body mounted to the hydrostatic transmission whereby the valve body is open to the closed porting system at one end thereof and open to the sump at the other end thereof. The valve body has a first open position whereby hydraulic fluid is pulled into the closed system from the sump when the pressure of the fluid in the closed system is below a first pressure, a second open position whereby hydraulic fluid exists the closed system to the sump when the pressure of the fluid is at a second pressure higher than the first pressure, and a closed position when the pressure of the hydraulic fluid in the closed system is at a third pressure higher than the second pressure.

Abstract: A system and method for selectively refueling a plurality of vehicle storage tanks with compressed natural gas (CNG) are provided that utilize a compressor system operable at suction pressures ranging from about 330 to about 3600 psig and discharge pressures ranging from about 330 to about 4500 psig in combination with a tank for temporarily storing CNG at an intermediate storage pressure of from about 330 to about 4500 psig, preferably from about 1700 to about 2700 psig, apparatus for selectively filling vehicle storage tanks with CNG from an inlet source, from the compressor discharge and from the intermediate storage tanks, and apparatus for selectively supplying CNG to the compressor inlet at either the available line pressure or the intermediate storage pressure.

Abstract: A powder injector creates a powder-air mixture and feeds the mixture to a powder coating gun. The injector comprises a powder suction conduit, an injector nozzle fitted in the powder suction conduit, a mixing cone with a venturi tube connected thereto, the mixing cone being disposed downstream of the injector nozzle, a conveying air supply conduit including a control valve for feeding conveying air to the injector nozzle, and a metering air supply conduit for feeding metering air to metering air outlet ports opening into the venturi tube. The metering air supply conduit is composed of two parallel branch passageways branching off the conveying air supply conduit and opening into a common supply conduit leading to the metering air outlet ports. One of the two branch passageways has a metering air control valve disposed therein which is actuated by the air pressure prevailing in the conveying air supply conduit.

Abstract: In a fuel vapor processing device for transferring fuel vapor from a fuel tank to a canister when fuel is fed into the fuel tank through a fuel fill pipe or when the pressure in the fuel tank is raised to a predetermined value, a pressure given through the fuel fill pipe is applied to one side of a first diaphragm valve body forming a first diaphragm valve while a pressure given through a fuel tank passageway is applied to the other side thereof, so that, when the pressure in the fuel tank passageway is increased while fuel is being supplied into the fuel tank, a first communicating hole is opened; and the atmospheric pressure is applied to one side of a second diaphragm valve body forming a second diaphragm valve while a pressure given through the fuel tank passageway is applied to the other side, so that when the pressure in the fuel tank becomes higher than the atmospheric pressure by a predetermined value a second communicating hole is opened.

Abstract: This invention refers to a method for the control of the phenomenon of severe slug in multi-phase flow subsea lines such as those for conveying petroleum from a subsea wellhead to the surface, comprising the installation of at least one secondary line (3), a secondary riser that starts at the downward geometry production line (1) and finishes in the vertical line (2) that conveys the fluids to the production unit, the said secondary line (3) collecting the gas segregated at the top of downward geometry production line (1) at a point B located at a distance "L" from the joint C between the production line (1) and the vertical line (2), and transports the gas to a point A located in the vertical line (2) and a distance "H" from the aforesaid joint C, the pressure differential existing between points A and B ensuring gas flow between said points, with possibilities of installing a control valve (4) in the secondary auxiliary line (3) so as to control the gas flow, the operation of said control valve being monito

Abstract: A suspension system with at least one hydraulic spring strut. At least a portion of the hydraulic medium is displaced into a hydropneumatic spring reservoir during the compression movement of the spring strut, and that portion of the hydraulic medium flows back into the spring strut during the expansion movement. At least the expansion flow is conveyed through the flow path of a damping valve and damped due to the fact that the flow path is continuously closed and reopened in an alternating fashion by means of a valve element once a expansion flow is present. The valve element is bypassed via a bypass which is constructed in such a way that a pressure compensation between the sections of the flow path arranged on both sides of the valve element is ensured in the static condition in which essentially no flow is present; and that the bypass essentially loses this pressure compensation function in the dynamic condition in which a flow is present.

Abstract: A flow control valve is provided of the type useful for positioning in a fluid system between a high pressure pump and a fluid gun. The valve preferably includes a body having first and second flow paths therein, and first and second valve members for controlling the fluid flow through the respective flow paths. The first valve member is biased towards engagement with the first seat, and the second valve member serves to substantially restrict fluid flow through the second flow path to maintain a high pressure level upstream from the valve when the gun is deactivated. The second valve seat member may be easily replaced through an access port provided in the body, and adjustment of the second valve member to control the restricted orifice in the second fluid path is obtained with a rachet mechanism.

Abstract: A flow control valve is provided of the type useful for positioning in a fluid system between a high pressure pump and a fluid gun. The valve preferably includes a body having first and second flow paths therein, and first and second valve members for controlling the fluid flow through the respective flow paths. The first valve member is biased towards engagement with the first seat, and the second valve member serves to substantially restrict fluid flow through the second flow path to maintain a high pressure level upstream from the valve when the gun is deactivated. The second valve seat member may be easily replaced through an access port provided in the body, and adjustment of the second valve member to control the restricted orifice in the second fluid path is obtained with a rachet mechanism.

Abstract: A flow amplifier (1) with an inlet (4) and an outlet (5) is provided, between which a first branch (6), through which a flow of a fluid to be amplified is flowing, with a first throttling device (8), the throttle resistance of which is adjusted in dependence on the pressure across and by the flow rate through the first throttling device, and a second branch (7) with a second throttling device (11), the throttle resistance of which is adjusted in dependence on the throttle resistance of the first throttling device. In a flow amplifier of that kind, the amplification factor is intended to be made independently of pressure losses in the generation of the flow to be amplified. For that purpose, at least one pressure-divider (14, 15; 17, 18) with a central take-off point (16; 19) is provided, which is supplied by a pressure difference between inlet (4) and outlet (5), the pressure at the central take-off point (15, 19) controlling the flow rate through the second throttling device (11).

Abstract: An apparatus is provided for controlling discharge of fuel vapors from a vehicle fuel tank having a filler neck. The apparatus comprises a housing defining an interior region, the housing being formed to include first and second inlet ports, a signal port, and an outlet port. The apparatus further comprises a first valve assembly movable between a blocking position preventing fuel vapor received from the first inlet port from flowing through the interior region during vehicle refueling and a venting position allowing fuel vapor received from the first inlet port to flow through the interior region to the outlet port during vehicle operation. A signal passageway extends between the filler neck and the signal port to expose the first valve assembly to fuel vapor pressure from the filler neck to move the first valve assembly toward its venting position during vehicle operation.

Abstract: The present invention relates to a method for transferring a multiphase effluent whatever the value of its gas phase/liquid phase volumetric ratio GLR may be. The value of the GLR is determined by means of a measuring device D, before it reaches a separation tank, when the measured value of the GLR is greater than a boundary value, part of the gas phase is discharged through compression means in connection with the tank, as long as the level of the liquid-gas interface in the tank is below a threshold value.

Abstract: Device for supplying a multiphase fluid comprising at least a liquid phase and a gas phase to a pumping assembly. The device consists of a tank including means for taking samples of the fluid, at least two, extending in the tank so as to run across the liquid-gas interface under normal working conditions, said sampling means comprise sample openings distributed on either side of said interface under normal working conditions, the sampling means being connected to the pumping assembly.

Abstract: A valve body has three openings: an inlet, an outlet and a flow-back opening, and is provided with an obturator of the flow-back opening and an obturator of the outlet, which outlet obturator is connected by means of a stem with a piston housed in a cylinder communicating with the outlet through a conduit. A recycling conduit places the outlet in communication with a recycling chamber communicating with the flow-back opening through a recycling opening closed by a third obturator, the recycling opening being freed by action of a rod solid to and intervening in conjunction with the second obturator.

Abstract: A system and method for refueling vehicle storage tanks with compressed natural gas (CNG) are provided that utilize a single stage compressor operable at suction pressures ranging from about 330 to about 3600 psig and discharge pressures ranging from about 330 to about 4500 psig in combination with a temporary storage tank for CNG at an intermediate storage pressure of from about 330 to about 4500 psig, preferably from about 1700 to about 2700 psig, selectively filling vehicle storage tanks with CNG from an inlet source, from the compressor discharge and from the intermediate storage tanks, and selectively supplying CNG to the compressor inlet at either the available line pressure or the intermediate storage pressure.

Abstract: A tempered water mixing system for applications such as emergency drench shower and eyewash stations, wherein the mixing system includes back-up control valves to ensure a substantial water flow without risk of user scalding in the event of malfunction of a main thermostatic mixing valve. The main mixing valve thermostatically blends cold and hot water supplies to provide a tempered discharge outflow at a selected temperature. A temperature limit control valve detects the discharge outflow temperature and responds to an excess temperature condition to modulate hot water flow in a manner reducing discharge temperature. A flow limit control valve detects the pressure differential between the discharge outflow and the cold water supply, and responds to a low flow condition represented by a high pressure differential to permit a make-up bypass flow of cold water past the main mixing valve.

Abstract: This invention provides an air control system which is retrofittable in an intermediate position between upstream compressors and air storage vessels and downstream useful production equipment or the like to provide benefits of greater air-utilization efficiency and a better air system balance between supply and demand, especially on an air-weight flow basis. A preferred embodiment employs a plurality of servo-driven flow controllers in parallel between a pair of header tanks and controls them in response to sensed downstream pressures and to the pressure differential across the control system.

Abstract: An apparatus is provided for controlling discharge of fuel vapors from a vehicle fuel tank having a filler neck. The apparatus comprises a housing defining an interior region, the housing being formed to include first and second inlet ports, a signal port, and an outlet port. The apparatus further comprises a first valve assembly movable between a blocking position preventing fuel vapor received from the first inlet port from flowing through the interior region during vehicle refueling and a venting position allowing fuel vapor received from the first inlet port to flow through the interior region to the outlet port during vehicle operation. A signal passageway extends between the filler neck and the signal port to expose the first valve assembly to fuel vapor pressure from the filler neck to move the first valve assembly toward its venting position during vehicle operation.

Abstract: The present invention features a system for actuating additional fluid flow lines at a transfer station, without the continuous venting or bleeding of fluid. The transfer station operates its supply lines, or runs, at differential pressures ranging from 15 to 85 inches of water. It is desirable to maintain differential pressure in the primary line, or in the combination of primary and secondary lines at mid-range, at about 50 inches of water. The system of the invention entails replacing the existing constant bleed pneumatic controller with an electromechanical no-bleed controller.

Abstract: A fuel injector is disclosed for injecting fuel into a combustion chamber a gas turbine engine which includes an injector nozzle having a central axis, first and second fuel injection paths in which one of the fuel injection paths supplies fuel to the injector nozzle while the other fuel injection path has an outlet displaced from the axis of the injection nozzle, a single fuel supply conduit which supplies fuel to both of the fuel injection paths, and a metering device which controls the flow of fuel from the single fuel supply conduit to the first and second fuel injection paths. The metering device may be a fuel metering valve assembly which has a piston defining a fuel metering orifice biased against a valve seat around an opening which communicates with the single fuel supply conduit. The piston is biased into engagement with the valve seat by a resilient bellows attached between the piston and a fixed structure.