Abstract: The invention relates to a shut-off valve comprising a valve housing (12), a valve piston with valve cone (22) arranged up-stream of an associated valve seat (20), and a piston holder (16) axially movable within the valve housing (14) by means of a spindle (58) and accommodating said valve piston. To prevent overtightening of the valve piston, the piston holder (16) is connected to the valve housing (14) in the manner of a slip clutch. In addition, the outlet port (146) of the shut-off valve can be closed by a non-return valve.

Abstract: A flow control and pressure reducing valve has a valve body with an inlet chamber and outlet chamber separated by a partition plate. A plurality of passages are formed in the valve body spaced circumferentially around the partition plate and have an inlet portion opening into the inlet chamber and an outlet portion opening into the outlet chamber. Elastomeric flow control means are positioned in the passages and are responsive to pressurized fluid introduced therein to control flow of fluid through the passages around the partition plate. The valve configuration allows the mounting of inlet and outlet gates within the inlet and outlet chambers to eliminate the need for separate gate valves. An auxiliary flow passage may be provided through the partition plate an flow controlled therethrough to increase the flow capacity of the valve yet still provide full flow and pressure control. Air inlet and relief valves may also be provided as an integral part of the valve.

Abstract: A hot/cold water flow rate regulating device, comprising a holder and a cap respectively secured to a mounting plate by a connecting rod and a bolt head stake. A tubular driving member which has a spiral track on its inside is fastened in the cap to drive a link to carry two valve rod assemblies to move up and down so as to respectively regulate the flow rate of hot and cold water and cold water into a mixing chamber for further discharge through a water outlet pipe.

Abstract: A deicer control system for a pneumatic deicer wherein a solenoid operated valve directs either pressurized air or creates and pulls a vacuum on the inlet port of a control valve. The inlet port communicates to an outlet port in the control valve post moveable piston which in one position maintains communication between the ports and in a second position is operative to block communication between the ports. The piston has one face of the piston with two distinct effective surface areas, wherein one surface area communicates at all times with the inlet port and upon a predetermined force on such one surface area such piston is moved to expose both effective surface areas and block communication between the inlet port and the outlet ports of the control valve.

Abstract: A backflow preventer assembly for a liquid supply line includes a single unitary valve body including flanged inlet and outlet end openings and a single access opening generally normal to the flow path defined by the inlet and outlet openings. The body houses a pair of check valve seats on opposite sides of the access opening for seating a pair of check valves mounted in series to permit flow from the inlet opening to the outlet opening. Adjustable compression rods interconnecting the two check valves seat the valves against their oppositely facing valve seats. The check valves and compression rods are sized to enable installation and removal of the valves through the access opening. In one embodiment the valve body has a predetermined length for installation in the liquid supply line between a pair of gate valve assemblies, such length being the same as a standard body length for a signel check valve assembly.

Abstract: A water hydrant defines an elongated flow passage having a water inlet and an air inlet, and a laterally extending water outlet spout disposed therebetween to define an outlet. An elongated rotatable stem is reciprocated within the flow passage, and terminates in an exterior handle. A water inlet valve is connected to the stem for control of flow from the water inlet into the passage and an air valve is connected to the stem to control inflow of air and preclude outflow of water through the air inlet. A first check valve in the spout precludes backflow of water into the passage, movement of the air valve opening the first check valve during operation of the handle. A second check valve in the spout downsteam of the first check valve precludes backflow of water into the spout. A drain orifice, open to the atmosphere, extends through the spout between the check valves.

Abstract: A gas regulator has a safety device provided in the inlet portion of a main body for automatically shutting off any excessive gas flow, a pressure gauge attached to the main body for indicating gas pressure at the inlet portion and a gas flow rate gauge also attached to the main body for indicating flow rate of the gas passing therethrough.

Abstract: An inlet chamber receives fluid from a small high pressure pump, such fluid flowing through a flow restrictor and one-way valve into an accumulator, until very high pressure is established in the accumulator. At the same time, a sealed poppet is pushed against a poppet seat by the high pressure within the inlet chamber to prevent fluid flow into an output chamber coupled to a bore hole. When the high pressure fluid in the accumulator is to be discharged into the output chamber, the inlet chamber is vented to the atmosphere to rapidly separate the poppet from the poppet seat. The poppet has an end portion having an area greater than the sealing area occupied by the poppet seat which permits the fluid under high pressure within the accumulator to rapidly separate the poppet from the valve seat so that a very large fraction of the energy in the accumulator is discharged through the outlet portion of the apparatus, to be injected into a bore hole for the purpose of fragmenting rock or the like.

Abstract: A tire valve incorporates a visual gauge, an element for setting different air pressures. The valve cannot overinflate, as the valve locks at a maximum pressure. Further, an indicator actuates when underinflated, and the valve is designed to keep pressure for an indefinite period.

Abstract: A valve assembly having a diaphragm valve configured for efficient cleaning and sterilization, and a method for operating the valve assembly in a manner controlling the fluid material flow therethrough and for effecting cleaning thereof. The valve assembly includes a valve body defining inlet and outlet ports. The diaphragm valve is operably arranged between the ports. An actuator mechanism selectively positions the diaphragm valve relative to a valve seat defined by the valve body. A selectively operated clamping mechanism arranged on one side of the diaphragm valve develops a clamping force which is used to seal the diaphragm valve against an annular sealing surface area defined by the valve body. A cleaning system arranged on an opposite side of the diaphragm valve facilitates internal cleaning of the valve assembly, including the diaphragm valve and the annular sealing surface area upon release of the clamping force acting against the diaphragm valve.

Abstract: A check valve for a leak detector used in conjuction with a gasoline dispenser maintains the delivery line under pressure to accelerate translation of the leak detector from the relaxed position through the leak position and to the non leak position unless there is a line leak resulting in flow above a predetermined flow rate. Upon cessation of fuel delivery at the outlet nozzle, the check valve isolates the leak detector from damage due to hydraulic hammer. In the event of leak in the delivery line, the bleed off of pressure locked in by the check valve will permit the leak detector to sense the low pressure when in the leak position and signal the station operator by restricting the flow rate.

Abstract: A mass flow stabilizer utilizes a restriction and a chamber for the dampening of pressure fluctuations between a gas pressure regulator and a mass flow controller.

Abstract: A dust trap comprising a pair of coaxially mounted dust valves. Each valve has a valve seat and flapper plate and actuator shaft which coacts with the flapper plate to cause it to initially slide and then pivot as the valve opens.

Abstract: A vapor handling system includes an overfill shut-off valve to provide protection for the canister from exposure to liquid fuel during a tank overfill condition which may be caused by a malfunction of a refueling nozzle. A system is provided for automatically assisting in opening the overfill shut-off valve at the conclusion of the tank refilling process to reestablish fluid communication between a fuel tank and a vapor recovery canister so that adequate fuel vapor venting from the tank to the canister can occur. The overfill shut-off valve is configured to block such fluid communication by closing a venting passageway interconnecting the tank and the canister.

Abstract: A fluid faucet includes a first passage having a first mouth and connected to a first fluid source, a second passage having a second mouth and connected to a second fluid source, a hollow cylinder having a first hole and a second hole, a third passage having a third mouth for passing a fluid mixed from the first and second fluids, an electromagnetic valve having a valve stem engagable with the third mouth and an infrared coupling-and-controlling circuit. The first and second holes are capable of respectively fully shielding or communicating with the first and second mouths when the hollow cylinder is rotated. The infrared coupling-and-controlling circuit actuates the electromagnetic valve to set the valve stem to be in disengagement with the third mouth to permit the mixed fluid passing through the third mouth when a body is in a distance close enough to such a faucet.

Abstract: A line pressure responsive flow control valve (46) is in series with a solenoid (34) operated off-on valve (26). These two valves (46, 26) are in a common housing having an inlet port (94) and an outlet port (96). A branch (24) of a bypass line (24, 24') extends from a fuel delivery line (10) to a fuel tank (16). A spring (76) biases a closure wall (70) of a piston (66) into contact with a valve seat (88) surrounding a valve orifice (90). Fuel pressure at the inlet (24) acts on the closure wall (70). When this pressure exceeds a predetermined minimum, the piston (66) is moved so as to open the valve orifice (90), allowing fuel to flow from the bypass line (24) to the off-on valve (26). The line pressure responsive flow control valve (46) functions to control flow through the bypass line (24, 24') at times when the off-on valve (26) is open.

Abstract: An adjustable ratio mixing valve is disclosed which incorporates an automatic pressure compensating arrangement whereby the fluid pressure immediately upstream of each of the metering orifices is maintained in substantial equilibrium. This arrangement then enables the respective fluids to be intermixed in any desired volumetric ratio by merely suitably adjusting the open flow area of the metering orifices. In one embodiment the metering orifices are each externally adjustable to enable relatively easy changes in the mixing ratio to be made and may also be interconnected whereby flow volume may be changed while maintaining the desired present mixing ratio. In another embodiment, rapidly acting on/off valving is provided integral with the valve so as to render it uniquely suited for cyclic fluid flow.

Abstract: A valve block assembly with internal delivery channels and a common outlet channel is provided. Access of reactants to the delivery channels is controlled by diaphragm valves, preferably equipped with relief grooves to accommodate deformation of the diaphragm. Reservoirs feeding the delivery channels have an inert atmosphere controlled by pressurizing and venting channels in the valve block. Exposure of plastic tubing to oxygen is kept to a minimum. The assembly is particularly adapted for use in a DNA or protein sequencer to supply reactants without cross-contamination or oxidative decomposition.

Abstract: The present invention is a safety system for a gas operated appliance in a vehicle. The system includes means for generating an electrical signal, such as a pre-determined voltage. The system also includes means for interrupting this electrical signal. One such means is a gas sensing means which is designed to interrupt the electrical signal in response to sensing gas. Another such means is an inertia switch means which interrupts the electrical signal in response to detecting a rapid changes in vehicle inertia or vehicle orientation. Yet another such means is a high temperature switch means which interrupts the electrical signal in response to detecting an elevated temperature in an area near said appliance. Finally, the system includes an emergency kill switch means for manually interrupting the electrical signal. The system further includes a fuel tank and a gas line between the fuel tank and the appliance.

Abstract: A control valve for the mandrel collection system of a rivet setting tool is described. The control valve features two shut-off modes; the first effected by a manual quarter-turn operation, and the second effected by an actuator stem located on the base of the tool and occurring when the operator puts the tool down on a support surface.

Abstract: A valve is equipped with a closing element capable of being adjusted by means of a valve shaft and equipped with a flow divider. The latter is equipped with an actuating drive by means of which the flow divider can be adjusted as a function of the degree of aperture or opening of the closing element of the valve. The flow divider may be installed downstream of the valve and is made in form of a sliding bolt valve with a flangeless housing. The valve shaft of the valve is equipped with a displacement transducer which detects its position and is connected via a control device to the actuating drive of the flow divider.

Abstract: A cassette containing a group of sealed cells is used as a means for delivering doses of fluid to be injected into a sterilizing chamber. After the cassette is automatically positioned over a piercing mechanism, the cassette is moved downwardly so that a cell is pierced. Fluid is then forced out of the cell by pneumatic pressure into an injector valve, which opens in a manner which does not adversely affect a vacuum within the chamber.

Abstract: A pressure control system for a storage tank, including a supply of working fluid under pressure. A conduit establishes fluid communication between the supply and the storage tank. A supply regulator is provided in the conduit for maintaining a substantially constant pressure to the storage tank. A tank regulator is provided in the conduit between the supply regulator and the storage tank for selectively admitting the substantially constant pressure as a function of temperature to the storage tank. A control selectively operates the tank regulator in response to given conditions, such as temperature conditions, in the storage tank.

Abstract: Providing a fluid pressure pulse generator having a fluid inlet chamber communicating with an accumulator via a movable ball positioned within the inlet chamber, a narrow fluid passageway bypassing the ball, an outlet chamber coupled to a valve seat for preventing communication between the outlet chamber and the accumulator when the movable ball assumes a first position against the valve seat and for permitting the outlet chamber to communicate with the accumulator when the ball is separated from the valve seat in a second position, introducing fluid within the fluid inlet chamber causing the ball to assume the first position and for causing the fluid to flow through the passageway into the accumulator until fluid pressure is very high; and thereafter rapidly reducing fluid pressure within the inlet chamber to cause the ball to assume the second position for in turn causing high impulse ejection of fluid from the accumulator into the outlet chamber.

Abstract: After separation and during centrifuging a separated blood component is transferred from a source reservoir (2) into a tube (4) oriented against a centrifugal gradient. A cap (34) converts the separated layer from the reservoir into a columnar body and the centrifugal gradient prevents mixing of the columnar body in the tube (4) during further centrifuging. In one embodiment the tube has a volume sufficient to hold a desired fractional component from the source reservoir, and a diameter small enough to prevent mixing of the component when the gradient is removed. A support (69) holds the conduit wound about a spool transverse to the iso-g-lines of the centrifuge. The support (69) may be removably affixed to the cap (34). In a preferred embodiment the source reservoir (2) has a flexible wall, and pressure of the wall against an elevation (29) maintains pressure in the fluid system.

Abstract: A bleed valve assembly for use in a double block and bleed valve system having first and second block valves comprising a body which is disposed between the block valves which forms a chamber, a flowway having a generally smooth flowway surface defined by the body and partially defining the chamber, the body having a cavity which is in open communication with the chamber and a drain outlet in open communication with the cavity, there being disposed a valve assembly in the cavity which has a rotatable valve element which can be moved between a first open position permitting flow through the drain outlet and a second closed position preventing flow through the drain outlet, the valve assembly having a portion which partially defines the flowway surface when the valve element is in the second or closed position.

Abstract: A dual flapper valve assembly permits a well logging operation to be carried out after a gravel pack has been deposited without losing a large amount of completion fluid into the formation. The dual flapper valves can be closed and fractured independently of each other and selectively to accommodate a gravel pack operation, a well logging operation and a completion fluid recovery operation. The closure plate of the lower flapper valve is propped open by the wash pipe during the gravel pack operation. The lower closure plate is fractured to accommodate a well logging operation, while the closure plate of the upper flapper valve is held open by a prop sleeve. Upon completion of the well logging operation, the prop sleeve is retracted out of engagement with the closure plate of the upper flapper valve, thereby permitting the upper flapper valve to close.

Abstract: This invention relates to a regulator means for automatically shutting off gas flow in a pipeline during the occurrence of a pressure reducing failure. The regulator means of the invention comprises a body member, a pressure reducing valve device, a piston valve assembly, a timing device, a transmission device, and an overflow control device. The body member is provided with a pressure reducing valve chamber separated by a thin wall from a timing device chamber. The timing device chamber receives the timing device and the transmission device. The transmission device includes a transmission plate and a transmission plate base. A through hole in the body member passes through the thin wall to communicate with a piston valve assembly. The piston valve assembly is mounted in the through hole under the lower side of a pressure reducing valve chamber. A leak-proof diaphragm separates the timing device and transmission device from the piston valve assembly.

Abstract: An electrically operated fluid control valve provides a controlled output pressure proportional to an electrical control signal. The valve housing has a pressure control chamber, an inlet passageway leading from an inlet port to the chamber, an outlet port connected to the chamber, and an outlet passageway leading from the chamber to an exhaust port. A supply diaphragm coupled with a supply valve at the inlet port regulates fluid pressure supplied to the chamber through the inlet passageway and another passageway communicates fluid pressure from the chamber to the supply diaphragm. An exhaust diaphragm at one end of the chamber coupled with an exhaust valve at the exhaust port regulates fluid pressure supplied to the exhaust port and the outlet passageway communicates fluid pressure between the chamber and the exhaust diaphragm.

Abstract: A dual disk valve system which may be quickly, easily and inexpensively repaired. The system comprises (i) a central conduit, (ii) a pair of end conduits securely yet detachably coupled to each end of the central conduit to form a single continuous conduit, (iii) a bearing ring, constructed of a pliable material, occupying an inner annular cavity at the junction of each of the end conduits with the central conduit, and (iv) a rotatable disk valve at the junction of the end conduits and the central conduit which may be rotatably or sealingly engaged against the bearing ring to prevent flow therethrough.Normal wear of the system is limited to the bearing rings which may be quickly, easily and inexpensively replaced by separating the central and end conduits.

Abstract: Fuel is directed to the stages of an afterburner by metering flow to the stages with a single metering valve and by controlling the flow to each stage by means of an integral shutoff and regulating valve. Each shutoff valve opens and closes the fuel flow to a stage as required. Each regulating valve, which is housed within a respective shutoff valve, regulates flow to each segment as a function of the pressure drop across the metering valve so that a constant weight flow to the segment is achieved.

Abstract: A metering regulator for air tools which includes a ported sleeve adjustable to control the volume of air flowing therethrough while simultaneously controlling the shut-off pressure of the air tool by adjusting the biasing force exerted on a differential pressure actuated pressure regulating member.

Abstract: An apparatus for automatically metering gas into liquid comprises a gas sly line including a gas pressure regulator (1), a gas flow meter (2), a gas flow governor (3), a vacuum check valve, and an ejector (5) connected to a supply line of the liquid being gasified, a liquid flow meter (9), and a control system (39). The gas flow governor (3) and the vacuum check valve are integrated in a single unit including a sealed chamber (11) whose two opposite walls are defined by diaphragms (12,13), a hollow cylinder (14) disposed between the diaphragms and having a central opening (17) through one its face end, a sleeve (19) with a closed end, mounted coaxially with the hollow cylinder centrally of a diaphragm (13), its closed end being fixedly connected with an output element (26) of the gas flow governor (3), and a needle valve with a valve with a valve seat (2) and a valve member including a stem (22) with a pointed tip (23 ) on its one end, extending axially of the hollow cylinder.

Abstract: A gas flow control device including a body means defining an inlet, an outlet and a gas flow passage therebetween a main valve disposed in the passage and comprising a primary valve movable between a closed position that prevents flow through the passage and an open position that permits flow therethrough; a primary diaphragm operably connected to the primary valve and supported by the body means, the primary diaphragm defining within the body and separating a primary reference chamber from a primary regulator chamber located in the passage and the pressure in the primary reference chamber exerting a force tending to open the primary valve; and a primary bias means biasing the primary valve toward its open position.

Abstract: A tap for a bottle of compressed or liquified gas has fitted therein a flow limiter in the form of a cartridge internally comprising a first, upstream chamber receiving the gas coming from the bottle, a second, downstream chamber opening into a supply line and a calibrated passage connecting the first and second chambers. A flow control assembly comprising a valve associated with a calibrated control element and an expansion chamber is preferably arranged to control the flow between the first and second chambers. The tap has particular utility in bottles for transfer of toxic and/or spontaneously inflammable gases, since it prevents major leaks from such bottles or from supply lines fed therefrom.

Abstract: Portable emergency breathing apparatus is disclosed which is comprised of a unitary, generally flat manifold having opposite ends and top and bottom sides and a manifold passageway between the opposite ends. Three parallel, laterally juxtaposed compressed gas containers are mounted on the bottom side of the manifold by means of coupling components extending through the manifold from the top side and into internally threaded necks of the containers. Each of the coupling components provides flow communication between the interior of the corresponding container and the manifold passageway, and a shut-off and pressure reducing valve assembly is mounted on the manifold between two of the containers. The valve assembly has upper and lower portions respectively adjacent the top and bottom sides of the manifold with the lower portion disposed in the space between the necks of the two adjacent containers.

Abstract: A linear flow system of static or unchanging parameters is provided to dispense a fluid or gas at a constant rate of flow independent of fluctuations in discharge line pressures. The system is composed of at least: a downstream pressure regulating device to maintain an initial constant conduit line pressure P1, a flow regulating device to establish a constant internal and discharge rate of flow by maintaining a constant effective orifice area therethrough, and an upstream pressure regulating device to maintain a second constant conduit line pressure P2. Interposed between the supply source and the downstream pressure regulator responsible for maintaining the initial constant conduit line pressure P1, is an integrally connected series of downstream pressure regulators adapted to synergistically buffer and preserve P1 from fluctuations in supply line pressure.

Abstract: A slow opening and fast closing gas valve includes a valve seat and a valve closure member arranged to respond to a gas pressure to seal aganst the valve seat to close the valve to an input gas flow therethrough. In order to open the valve, the gas exerting the gas pressure for sealing the valve closure member against the valve seat is allowed to bleed-off through a fixed restriction while the input gas is allowed to urge the valve closure member away from the valve seat to provide a slow opening of the input gas flow path through the valve. In order to close the input gas path through the valve, the input gas pressure is applied to the valve closure member to assist a closure spring in urging the valve closure member against the valve seat to produce a fast closure of the valve. A second valve is arranged to selectively control the flow path of the gas being bled off from the valve closure member to provide an unrestricted flow path or a restricted flow path through the fixed restriction.

Abstract: A regulator means for automatically shutting off gas flow in a pipeline during pressure reducing failure is provided. The regulator means includes a body member, a pressure reducing valve assembly, a switching valve assembly, a timing device for a predetermined time period of gas flow, a transmission plate for controlling switching valve assembly by the timing device, and an automatic overflow control assembly. The body member is provided with a pressure reducing valve chamber, a timing device chamber and a thin wall located between the pressure reducing valve chamber and the timing device chamber. The timing device chamber receives the timing device, and the pressure reducing valve chamber receives the pressure reducing valve assembly. The switching valve assembly is arranged at the outlet port of the gas flow passage. The switching valve assembly consists of a spindle, a leakage-proof seal ring, and a spiral spring.

Abstract: A compressed gas supply system is disclosed which includes a pressure tank for a predetermined compressed gas. An outlet valve is mounted on the pressure tank and includes at least two outlet ports. One outlet port is provided with a size and thread configuration proportioned to meet a first industry standard for connection of equipment using the compressed gas within the tank. The other port has a size and thread configuration different from the one port, and proportioned to meet a second different standard for connection of equipment using the compressed gas. An automatic pressure-regulating valve is provided in one of the ports to reduce the pressure delivered to such port to a maximum pressure less than the maximum pressure allowable in the associated outlet port. The valve reduces the inventory requirements by permitting the use of a single valve and tank combination to connect with distribution systems for the compressed gas having different maximum pressure values.

Abstract: An electro-magnetically controlled gas valve has an armature supported by a flexible diaphragm, with the armature and diaphragm being in the magnetic flux path of the electro-magnetic coil, and the armature carrying a resilient seal for engagement with a conical seat forming part of the gas flow path through the valve.

Abstract: A safety valve for use with cylinders of noxious gases utilizes a reverse-seat poppet with a bellows seal mechanically coupled between the compound shaft of the poppet valve and the body of the valve, with the bellows and poppet areas sized so that any back pressure on the bellows and the poppet valve are balanced and oppositely directed, the inlet pressure on the valve, as well as the spring beaming of the compound poppet shaft towards the valve cap, tending to keep the valve closed, a manual closer and stem lock keeping the valve closed during transportation and a removable unloader valve being provided to permit passage of gas out of the valve only when the coupling to the gas distribution system is tight and free of leaks.

Abstract: The invention is a sealer unit useful for temporarily preventing water from flowing past a closed valve in a pipeline, such as a butterfly valve. This unit includes a cup-shaped seal member, and a solid plug member that fits inside the seal member. The seal is constructed of a material that swells on contact with water, and the solid plug is derived from a liquid material that can solidify at ambient temperature. The seal member is seated down onto the valve closure plate, and the plug member is formed inside the seal member. The seal member is then contacted with water, causing it to expand outwardly against the pipeline and inwardly against the solid plug member. In its expanded state, the seal member provides an effective seal to prevent water from flowing past the valve. In addition, the solid plug forms a coherent body that enables it to withstand the pressure exerted by the seal member, as it swells, but is capable of being broken into pieces if required.

Abstract: A shock actuated shut-off valve for fluid flow lines is provided which includes a valve housing having a central chamber in communication with inlet and outlet conduits and with a hollow, outwardly enclosed stowage arm in upward, substantially plumb communication with the central chamber. A valve element having a longitudinal aperture incorporating non-occlusive abutment means is releasably supported in the stowage arm for vibratory displacement to and sealing engagement with the central chamber. An inner closure is sealingly disposed in the stowage arm above the valve element. A tether slidably and sealingly extends through an aperture in the inner closure and extends, in spaced relationship, through the aperture in the releasably supported valve element, with the lower end of the tether incorporating a lift member disposed, in a non-obstructive static position, below the abutment means.

Abstract: A fluid faucet includes a first passage having a first mouth and connected to a first fluid source, a second passage having a second mouth and connected to a second fluid source, a hollow cylinder having a first hole and a second hole, a third passage having a third mouth for passing a fluid mixed from the first and second fluids, an electromagnetic valve having a valve stem engagable with the third mouth and an infrared coupling-and-controlling circuit. The first and second holes are capable of respectively fully shielding or communicating with the first and second mouths when the hollow cylinder is rotated. The infrared coupling-and-controlling circuit actuates the electromagnetic valve to set the valve stem to be in disengagement with the third mouth to permit the mixed fluid passing through the third mouth when a body is in a distance close enough to such a faucet.

Abstract: A gas valve for providing two levels of flow capacity to a burner is adapted to enable easy conversion of the valve from use with one type of gas to use with another type. To this end, a low-flow passageway, which establishes the low-flow capacity, is sized to provide the desired low-flow capacity when the valve is used with one type of gas. An opening, axially aligned with the passageway, receives a screw means which simply prevents the escape of gas to the exterior of the valve. When the valve is to be converted to use with another type of gas having a higher BTU content, the pressure regulator and burner orifice screw are changed, and the screw means in the axially aligned opening is replaced with a metering screw means which, in addition to preventing the escape of gas, has a portion which extends into the low-flow passageway so as to reduce the effective opening area of the low-flow passageway.

Abstract: A cylinder valve for mounting on a high pressure gas cylinder for remotely controlling the flow of gas from the cylinder. The cylinder valve is resistant to hazardous gases and includes a fluid passage for conveying gas through the cylinder valve from an inlet for communicating with the high pressure gas cylinder to an outlet. A first valve is provided for opening and closing the fluid passage to control the flow of gas through the fluid passage. A pneumatically operated actuator is provided for operating the first valve in response to the application of an external control pressure to the actuator. A mechanism is provided to move the first valve and close the fluid passage in the event of loss of external control pressure to the actuator. A second valve is located downstream of the first valve in the vicinity of the outlet. The second valve is biased to close the fluid passage but is moved to open the passage in response to attachment of a connector to the outlet of the cylinder valve.

Abstract: A flow controller apparatus having few moving parts that may be inserted directly into a flow line to be responsive to flow pressure and maintain the flow rate constant. The flow controller has an internal bore that is a revolutional chamber having a maximum cross-sectional diameter at the inlet end and tapering toward a minimum cross-sectional area across a throat portion. A differential pressure plate supported axially movably in said chamber is spring biased toward the inlet end of the chamber, and is movable in response to upstream flow pressure to adjust the cross-sectional fluid flow area to maintain a constant flow rate. In addition, the use of such flow rate controller enables the construction of a portable type of fluid pressure and flow rate control apparatus to reduce pressure and flow rate from a high pressure, high volume liquid or gas source for supply to a low pressure, low volume output requirement.

Abstract: The solenoid valve actuates a pilot valve body which cooperates with a stationary seat surface. The pilot valve body actuates a main valve body of an on-off valve having a piston with a calibrated leakage. The cylindrical chamber on one side of the piston communicates with the inflow side of the on-off valve when the solenoid valve is opened via the pilot valve body, and the cylinder chamber on the other side of the piston communicates directly with a discharge. That side of the piston which is near the main valve body is isolated from the flow path of the on-off valve. The possibility of leakage is reduced considerably for a very reduced constructional outlay, electricity consumption is low and the loss of valve-time cross-section associated with an opening instruction is reduced.

Abstract: There is disclosed tub-shower diverter apparatus that includes a diverter chamber having a planar annular surface that is pierced by a first opening or openings to provide communication with an inlet water supply, and is further pierced by second and third oppositely disposed openings or series of openings that communicate respectively with a tub outlet and a shower outlet. The second and third openings are centered on a diameter of the planar annular surface and are spaced radially from the first opening. Diverter seal means disposed within the diverter chamber is an elastomeric washer sized to overlay the second and third openings, but not the first opening. A diverter cam underlies a portion of the elastomeric washer to prevent that portion from engaging the diverter chamber planar annular surface. Rotation of the cam permits selection of the portion of the elastomeric washer that will not be engaged with the diverter chamber planar annular surface.