Abstract: A valve to be installed on containers for fluid materials is formed by two coaxial chambers (3) and (4) one of which is internal (3), contains the fluid material and is equipped with a movable piston (10) and a discharging valve (7) including at least one "bypass" hole (8) which connects the two coaxial chambers (3) and (4) in the area between the maximum level of the fluid (18) and the discharging valve (7). An elastic sheath or rubber ring (5) is provided to close and wrap tightly the hole (or holes) (8).

Abstract: This invention relates to a device and method for converting low continuous liquid flow to a high intermittent and pulsating flow. They are especially adapted for operating sprinklers, shower heads and venturi pumps at low flow. Applicant has accomplished these objectives by introducing liquid at a controlled low rate of flow such as by the use of pressure compensating drippers in a liquid supply line, thence into a chamber which is somewhat expansible in volume and increasing pressure therein while restricting the outflow of the liquid until pressure created by introduction of such liquid is sufficient to eject the liquid intermittently at a higher flow and over a greater area. This is achieved by utilizing a pressure responsive check valve in the liquid exit and more particularly by utilizing a check valve designed for quick response to create a water hammer effect.

Abstract: A check valve for providing mono-directional flow in medical devices. The check valve includes a valving means comprised of a valve member and a seat member disposed within a cylindrical channel. The valve member is coaxially aligned within the channel downstream of the seat member and provides a valve cavity into which a portion of the seat member is disposed. The interface between the valve member and the seat member creates a seal length. The valve member is radially stressed by the axial position of the seat member so that the sealing force along the seal length is substantially radial. Fluid flow passes through an axial bore in the valve seat member and upon sufficient pressure unseats the seal length and passes through the annular passageway between the valve member and the seat member.

Abstract: A mass produced, self sealing valve for inflating toy balloons and adapted to be retained with the balloon to maintain the inflation thereof. The valve has an elongated tubular shank closed at one end and open at the other, with a sealing disc secured to the shank and extending therefrom in a generally orthogonal plane. The shank is perforated intermediate the disc and the closed end of the shank. An elastic sleeve encompassing the shank and overlying the perforation permits pressurized gas to pass via the shank thrugh the perforation and past the sleeve, but prevents the escape of pressurized gas from the interior of the associated balloon. The sleeve is provided with exterior lengthwise ribs to prevent squealing of the valve under pressure.

Abstract: An injector valve for passing air into a pneumatic conveying system for particulate solids includes a housing having an inlet chamber and a discharge chamber. A hollow seating element is mounted in the discharge chamber. The seating element has a hollow cylindrical section in fluid communication with the inlet chamber and a conical forward section. At least one fluid outlet opening extends from the hollow within the seating element to the outer surface of the seating element cylindrical section. A flexible elastomeric annular boot is mounted on the outside surface of the seating element.

Abstract: A valve assembly includes an elongated valve body, an elastomeric sheath laterally enclosing the outside surface of the valve body with the sheath being sealed to the valve body at its ends spaced apart in the elongated direction. An inlet channel extends in the elongated direction from one end of the valve body for receiving a fluid from a container, such as a flexible container. An outlet channel is located at the opposite end of the valve body extending in the elongated direction for discharging the fluid received in the inlet channel. At least one port extends outwardly from the inlet channel to the outside surface of the valve body so that the fluid can flow between the outside surface and the elastomeric sheath causing the sheath to expand. The fluid between the outside surface of the valve body and the sheath flows to at least one other port in the valve body directed inwardly to the outlet channel so that the fluid can be discharged.

Abstract: An injection shut-off valve for insertion into an infusion line comprises a housing with connections for inlet and outlet lines. The housing includes an orifice for introducing an injection syringe. A valve is installed in the housing and includes a deformable diaphragm. In a non-injection state, the valve device seals off fluid flow between the inlet and outlet lines on the one hand and the orifice on the other. During injection, the diaphragm is deformed to create an opening such that fluid flow from the inlet to the housing is shut off. During deformation of the diaphragm the orifice is brought into fluid carrying communication with the outlet line from the housing, thus making it possible for the injection fluid to pass through the housing into the outlet line, and to a patient.

Abstract: An improved pressurized fluid check valve is provided which, when incorporated into a drill string powered by a rotary table of a drilling rig, prevents drainage of fluid from the stand pipe and rotary hose when the flow of fluid through the drill string is interrupted, such as during the attachment of another section of drill pipe to the drill string. The improved pressurized fluid check valve comprises (a) a tubular body member having a bore extensive therethrough between first and second end portions thereof, the bore having an enlarged medial portion forming a valve chamber; (b) a flow restricting assembly supported within the valve chamber of the tubular body member for selectively closing the valve chamber to fluid flow in a pressurized mode; and (c) a loading valve supported in an access bore formed through the side wall of the body member so as to communicate with the valve chamber.

Abstract: A relief/check valve for venting an electric storage battery comprising essentially an annular sealing member having an elastomeric skirt engaging the sloping exterior surface of a valve seat. The skirt flares outwardly from the seat in direct proportion to the pressure in the battery such as to prevent excessive build up of pressure in the battery when the gassing rate is high. The skirt quickly returns to a sealing condition when the pressure within the battery drops below the opening pressure of the valve.

Abstract: A cylinder has at least one valve seating surface-forming portion which has an outer surface formed therein with at least one recess, the bottom surface of which serves as a valve seating surface. A discharge valve is arranged on the outer surface of the valve seating surface-forming portion to close or open outlet holes formed in respective ones of the valve seating surface at locations where the wall thickness of the cylinder is the minimum. The discharge valve has at least one elastic valve body having an arcuate cross section and disposed in tight contact with a corresponding one of the valve seating surface. The valve seating surface is arcuately concavely cured with almost the same radius of curvature as that of the valve body of the discharge valve.

Abstract: A catheter having a proximal end provided with a nonreturn valve consisting of the catheter tubing end and of a rigid insert body whose rearward end is fixed in the catheter tubing. Bypass channels extend passed the end. The front end of the insert body is a cylindrical plug whose peripheral surface is joined by the catheter end acting as a valve hose. In case of overpressure in the catheter tubing, the tubing end is lifted from the plug and the pressure medium may escape accordingly.

Abstract: A housing containing a chamber having an inlet bore and an outlet bore with an elongated resilient annular seal having one end fixedly attached around the inlet bore and its other end facing the outlet bore resiliently sealed around the surface of a solid plug located in the chamber.

Abstract: An irrigation leakage prevention device for coupling between an irrigation supply source and an irrigation emitter unit. The device comprises a tubular throughflow conduit, at least the central portion thereof being formed of a resiliently flexible material and having end portions which are held against resilient displacement, a central barrier member being fixedly located within the conduit. With a water supply pressure less than a predetermined minimum, the central portion of the conduit sealingly embraces the barrier so as to prevent throughflow and when the water supply pressure exceeds this minimum, the central portion is resiliently displaced away from the barrier so as to allow throughflow.

Abstract: A discharge valve which includes a housing provided with a plurality of discharge holes, a plurality of seat portions formed on an inner circumferential face of the housing an a portion surrounding the discharge holes, a valve member disposed within the housing and provided with a plurality of valve portions, a valve support member disposed within the housing for supporting the valve member and a projecting member provided between the discharge holes on the inner circumferential face of the housing.

Abstract: A valve assembly for filling balloons comprising an elongated generally tubular body member having an upper section and a lower section divided by a transverse interior wall, a radially outwardly directed flange defining a circumferentially extending channel for the bead at the mouth of a balloon, means defining at least one outlet port in the sidewall of the lower section and at least one opening in the side wall of the upper section spaced downwardly from the upper terminal edge thereof.

Abstract: A mixing valve includes a housing having inlet ports and an outlet port that intersect at a valve chamber. A valve core within the valve chamber includes passages in fluid communication with the inlet and outlet ports. The passages intersect at a cavity within the valve core. An elastomeric seal retained within the cavity sealingly engages the valve core around the passages in the absence of fluid pressure in the inlets. Injection of a pressurized fluid in one of the inlets causes the seal to move away from both the corresponding inlet passage to permit fluid flow from the pressurized inlet port to the outlet port and compresses the seal around the other inlet port to provide a tighter seal than existed before application of pressure to the first port.

Abstract: A variable stator for use in a sprinkler head has a two piece stator housing which includes flexible inner sidewalls overlying spaced apertures in an outer sidewall. The stator housing includes a plurality of drive ports which pass a controlled portion of the fluid flow against an impeller that is part of the drive mechanism for rotating the nozzle of the sprinkler head. The inner sidewalls flex inwardly as a function of fluid flow around the stator relative to the controlled fluid flow to the impeller to selectively open the apertures to keep the rate of rotation of the sprinkler nozzle relatively constant. By locating the impeller within the stator, upstream of the remaining fluid flow around the stator and through the spaced apertures, wear on the impeller is minimized. In addition, turbulence through and around the stator is minimized to further reduce wear and for increased fluid flow control.

Abstract: A pressure relief valve includes a body coupled to a tube and a resilient sleeve cooperates with the tube and body to vent the interior of the tube when fluid pressure therein reaches a predetermined level.

Abstract: The hand manipulatable sprayer (10) is connectable to a container (26) and includes a body (12) having a pump assembly (120) and a check valve assembly (90). The check valve assembly (90) includes at least one conically-shaped skirt valve member (100,112). Also the body (12) can have a cavity (68) adapted to receive similarly shaped inserts (67) for different valve assemblies (90), a cylindrical cavity (68) for receiving various size pistons (34) together with a mating cylindrical insert (43) and a nose formation (15,142,143) adapted to receive nozzle assemblies (14) similarly shaped but of different types and a passageway (96,97) extending from the cavity (68) to and opening on the nose formation (15).

Abstract: This invention relates to a valve assembly including a hollow body housing a tubular flexible diaphragm therein to provide a passage for fluid flow through the body. The assembly includes means whereby pressures within the diaphragm and in the chamber between the diaphragm and the hollow body are controlled so that, in use with fluid flowing through the diaphragm, it will be caused to automatically and repeatedly contract and expand. This will result in a pulsating flow of fluid through the assembly. Such a valve assembly finds particular application in a swimming pool cleaner operating off the reduced pressure provided by the pump for the conventional pool filtration plant and this invention includes a cleaner of this type including a valve assembly as set forth.

Abstract: In accordance with the invention, a full opening check valve is provided which will close in response sustained high velocity flow through the valve. In one embodiment, a downhole blowout preventer is provided having a rigid outer sleeve which may be interspaced within a casing string near its lower end for insertion into a bore hole. The downhole blowout preventer has an inner sleeve including an upwardly longitudinally collapsible tube within the outer sleeve. The tube may be composed primarily of rubber or the like. The inner sleeve includes a surface for developing an upwardly acting collapsing force responsive to the upward flow of well fluids through the blowout preventer.

Abstract: An adapter to be used in conjunction with a tubular flushing device to unclog a drain pipe. The tubular flushing device expands during usage. The tubular flushing device is to fit within the adapter and is to expand during usage into tight contact with the interior wall of the adapter. The fore end of the adapter is tapered slightly to facilitate tight connection with the inlet opening of the drain pipe.

Abstract: The present invention comprises an outer housing and an inner housing having a pressure relief chamber defined therebetween. The inner housing receives fluid and directs it through a pressure outlet opening into the pressure relief chamber. The outer housing includes an outlet opening and a pressure relief opening. A flexible cylindrical seal surrounds the pressure outlet opening of the inner housing and is yieldably movable radially outwardly to a pressure flow position wherein it closes the pressure relief opening of the outer housing and opens the pressure outlet opening of the inner housing.

Abstract: The spray tip of a diesel fuel injector, downstream of a conventional pressure actuated injector needle valve, includes a plug holder used to support and retain a hollow inner plug valve element, containing a number of radial through orifices communicating with an annular groove in the outer peripheral surface of the plug valve element and an outer hoop valve element with a hoop-skirt valve encircling the inner plug valve element. A shrink-fit exists between the hoop-skirt valve and the inner plug valve element to provide for a zero sac volume spray tip. The hoop-skirt valve operates as an integral hoop valve which is expanded relative to the inner plug valve element when supplied with high pressure fuel to form therewith a fuel discharge annulus.

Abstract: An ablution faucet includes a wall-mounted control valve and a flexible conduit having a hand-held control unit at the end thereof. The hand-held control unit includes a body portion from which a nozzle projects, and a lever for controlling the flow of water through the nozzle. The body portion includes a piston which is always urged into engagement with a valve seat by water pressure and a piston-actuating member engageable by the lever. Various alternative embodiments of the piston and piston-actuating member are disclosed. The wall-mounted control valve also includes a piston which is biased to a valve-closed position by water pressure, as well as a vacuum breaker. An alternative embodiment of the invention employs a cable disposed within the hose and connected in valve-actuating relationship between the lever and the wall-mounted control valve.

Abstract: A control impulse intensifier for an impulse fluid flow system adapted to be situated between a supply line and a pipe line comprises a housing situated between the supply line and the pipe line and having an outflow passage therein, a hollow valve element situated inside the housing to define an inner valve space inside the valve element communicating with both the outflow passage and the pipe line and an outer valve space between the housing and the valve element, a flexible cylindrical device situated at least inside the hollow valve element, and a valve core situated inside the flexible cylindrical device and having at least one path outside the valve core.

Abstract: Fluid pulsation apparatus is disclosed which includes an elastomeric sleeve designed to expand circumferentially and longitudinally in response to internal fluid pressure. A fluid barrier in the form of a disk valve is located within the sleeve, and is biased closed by an expansion spring extending between the upstream end of the sleeve and the disk valve. A rigid housing surrounds the sleeve and restricts its circumferential expansion to a predetermined level. The apparatus can be made to produce either pulsing or continuous fluid flow by adjusting the flow rate of fluid downstream of the disk valve.

Abstract: This invention relates to a manual liquid dispensing device for spraying liquid by squeezing the trigger thereof. An adapter is inserted into a cylinder bore forming a pressurizing chamber. A piston is slidably mounted within the adapter. This adapter has an inlet communicating with the intake portion and an outlet communicating with an outlet passage to a nozzle hole formed at the bottom end thereof. A valve advantageously formed is attached to the end of the adapter to open only the inlet at pressure reducing time of the pressurizing chamber and to open only the outlet at pressurizing time. This valve is made of elastic material as a single unit.

Abstract: Pulsations are created in a fluid flow stream by a pulsatile device. The device includes a flexible, resilient element which oscillates under the influence of a pressure differential to interrupt the fluid flow at regular intervals, thereby causing the outlet flow to pulsate. The device may be connected directly to a supply of fluid under pressure.

Abstract: Apparatus for use in contacting a gas with a liquid comprises a pair of ported injector pipes onto which elastic sleeves having a series of slits therein are mounted by means of axially-spaced bands. The elastic sleeves expand as gas flows from the pipe to open the slits for discharging the gas into the liquid. The apparatus functions to maintain a desired gas flow rate irrespective of the accumulation of gas-liquid reaction products tending to block the slits.

Abstract: A valve which is substantially leak proof and resistant to road soil and grime comprises a collapsible sleeve and a pin member to prevent leakage, but which is effective to permit inflation and deflation upon movement of the pin so as to dislodge an enlarged end portion from contact with one end of the sleeve.

Abstract: An anti-surge valve for installation in a cylindrical chamber permits a fluid to flow at low velocity into and out of a port that opens into the cylindrical chamber and is located on the concave wall of the cylindrical chamber, the valve preventing a high velocity flow of the fluid from the cylindrical chamber into the port. The valve includes a sealing tube that is positioned within the cylindrical chamber in juxtaposition with the port and coaxial with but spaced radially inward from the portions of the concave wall that surround the port. The sealing tube is maintained in this position by spacers surrounding the sealing tube and extending radially outwardly to the inner surface of the cylindrical chamber. The anti-surge valve is a unitary structure molded of rubber.

Abstract: A dispenser of liquid from an inverted rigid screw neck container, the dispenser comprising a base with an upwardly directed socket to receive the container neck in a liquid tight manner, a port to discharge liquid to a threaded nose to be coupled to a tap, an air bleed arrangement to deliver atmospheric air through a stem and a one way valve into a container when mounted on the base.

Abstract: The present invention is concerned with an atomizer usable in both normal and inverted orientations, in which only the liquid to be atomized is sucked up into a pressurizing chamber 7 of a pump mechanism, while completely avoiding the flow of air into the pressurizing chamber, in both the normal and inverted orientations. The sucking of only the liquid is achieved by use of a suction passage 15 for operation in the inverted orientation provided in an ordinary pump mechanism 2, the suction passage 15 being opened at its one end to the pressurizing chamber and at its other end to a space outside and above the pump mechanism, and a stop valve 13A disposed in the suction passage 15 and adapted to open when the vacuum in the pressurizing chamber has been increased beyond a predetermined level, in the operation in inverted orientation.

Abstract: A back flow valve comprising a housing having an inlet and an outlet and a tube mounted in the housing and having an open end communicating with the inlet in said housing. The tube has the other end thereof closed and has a plurality of circumferentially and longitudinally spaced openings at the center thereof such that liquid can only flow from the inlet to the housing through the openings in the tube to the outlet of said housing. An elastic sleeve is telescoped over the tube and normally closes the openings, the inside diameter of the sleeve being less than the outer diameter of the tube. The tube has longitudinally spaced abutments adjacent the ends of the sleeve and the length of the sleeve is less than the longitudinal distance between the abutments.

Abstract: An improved flow sequencing and check valve which delivers a single source of fluid to a plurality of outlets. The improvement includes a generally cup-shaped portion which never disengages with the entrance port as it moves the sequencing disc closed in response to a broad range of fluid flow and pressure conditions. The cup-shaped portion is in continuous engagement with the entrance port, allowing virtually all of the fluid to pass through exit ports in the base of the cup-shaped portion and through outlet apertures controlled by deflectable flappers integral to the sequencing disc. Hence, both fluid weight and pressure continuously act upon the cup portion to seat the sequencing disc.

Abstract: A retainer member is connected to a relief valve attached to a rim of an aircraft tire containing a fluid under pressure. The relief valve has a core made of a fusible material which is responsive to a predetermined temperature that causes the fusible material to change from a solid to a liquid. The pressure of the fluid in the tire causes the fluid to be expelled from the relief valve and thereafter allow fluid to escape from the tire to prevent damaging the tire through a pressure resulting from the predetermined temperature. The retainer member captures the core material to prevent injuring any person on the expulsion of the liquid from the relief valve.

Abstract: An adjustable pneumatic conveyor tube booster valve for banding to the top of a conveyor tube with the booster valve inlet located remotely from the pneumatic conveyor tube. The booster valve is constructed from an annular rubber sleeve which flexes inwardly in response to high inlet pressure in the booster valve to permit flow of air into the conveyor tube but returns to its original shape when the pressure in the inlet drops to prevent back flow of material from the conveyor tube into the booster valve. An adjustable cap permits adjustment of gas flow into the booster tube.

Abstract: In a valve wherein a flexible tube is stretched around a circular barrier between inlet and outlet slots and is conditioned to enable flow in an annular path around the barrier when upstream pressure overcomes pressure in a control jacket around the tube, the improvement comprising a second flow path directly through the barrier, which is normally closed off by a poppet valve engagable with a seat around the passage. A spring augmented by a control pressure biases the valve toward closed position and is preferably set so that, only after capacity of the flexible tube is reached or approached, does the poppet valve open to answer the need for high pressure demand downstream or for relief of a high pressure surge upstream.

Abstract: An improved kelly valve of a type wherein a flexible inner valve body closes the valve passageway responsive to the pressure of a gaseous control fluid contained within a sealed chamber and opens the passageway responsive to exterior pressure of drilling fluid or of tools being passed through the valve. The improvements enhance the operating life of the flexible member and simplify the valve structure and assembly and disassembly procedures.

Abstract: A back pressure regulator and non-return valve is provided herein. It includes a hollow plug having an open inlet end and a closed end having a central aperture therethrough. A closure cap is hermetically slidably disposed within the hollow plug. A plurality of outlet perforations are provided from the hollow plug, the apertures being disposed along helical paths along the outer periphery thereof. Finally, a tubular resilient diaphragm sleeve of non-uniform wall thickness envelopes the apertured portion of the hollow plug, the resilient sleeve being secured to the hollow plug at its base only adjacent the open inlet end thereof. Control of the outflow through an annular outflow path between the hollow plug and the tubular resilient diaphragm to require greater gaseous pressure is provided by changing the number of the outlet apertures in the effective outlet length of the hollow plug.

Abstract: An artificial, triple-lobed semilunar valve is disclosed for replacing the aortic or pulmonary valve in the heart. The valve includes a flexible suture ring which conforms to the shape of the aortic root and three flexible pockets which are mounted within the suture ring. When fluid flows through the suture ring in one direction, the pockets bend outwards to the vessel wall and lie free-floating in the fluid, thereby permitting fluid to flow through the valve. However, when the fluid begins to flow in the opposite direction, the pockets open and contact one another to close the valve thereby preventing fluid flow in the opposite direction.

Abstract: A back flow valve comprising a housing having an inlet and an outlet and a tube mounted in the housing and having a open end communicating with the inlet in said housing. The tube has the other end thereof closed and has a plurality of circumferentially and longitudinally spaced openings at the center thereof such that liquid can only flow from the inlet to the housing through the openings in the tube to the outlet of said housing. An elastic sleeve is telescoped over the tube and normally closes the opening, the inside diameter of the sleeve being less than the outer diameter of the tube. The tube has longitudinally spaced abutments adjacent the ends of the sleeve and the length of the sleeve is less than the longitudinal distance between the abutments.

Abstract: There is provided an in-line regulator for pressurized fluids. The regulator comprises a regulator sleeve disposed in a tubular, fluid-carrying line or in constituent parts of the line and is provided with at least one wall orifice through which the line or the constituent part of the line communicates with the outside. The sleeve is constituted by two flange-like end portions fitting the tubular line and a central portion connecting the flange-like portions and having smaller outside dimensions than the flange-like portions, in such a way as to define, in conjunction with the flange-like portions and with the inside wall of the tubular line, an annular output space. The central portion is elastically deformable by an inflatory force and the annular output space communicates with the inside of the tubular line via at least one constant-cross-section opening in at least one of the portions, and with the outside via the wall orifice.

Abstract: This invention relates to an in-line back flow preventer valve for fluid supply lines of the reduced pressure zone type. The valve body has an inlet means and a discharge means for liquid flow therethrough. A first chamber, within the valve body, is in liquid communication with the valve inlet, with the first chamber having at least one outlet positioned in the periphery thereof. At the outer periphery of the first chamber is a first flexible member which is adapted to seal the peripheral outlet through elastic pressure under the static or back flow pressure condition within the valve. A second chamber commonly referred to as a reduced pressure zone is positioned outside the first chamber and has at least one outlet in the periphery thereof. Mounted at the outer periphery of the second chamber is a second flexible member adapted to seal the peripheral opening through elastic pressure when the valve is under the back flow or static pressure condition.

Abstract: A hydraulic buffer for a vehicle, the buffer including a piston and cylinder arrangement in which the piston is displaced by the pressure of hydraulic fluid, the hydraulic fluid being contained in a chamber defined by the piston and cylinder, the chamber being in flow communication with a reservoir for the hydraulic fluid, a valve being provided for permitting flow from the chamber to the reservoir, the valve comprising a perforated resilient sleeve in flow communication with the interior of the chamber and a resilient bush mounted on the periphery of the sleeve, an increase in pressure within the chamber causing deformation of the sleeve and bush, the deformation constituting the opening of the valve.

Abstract: A dual tube hydraulic shock absorber includes an inner tube or a cylinder slidably receiving a piston therein, a piston rod secured to the piston and extending out of the cylinder through the upper end thereof, an outer tube surrounding the cylinder to define around the outer periphery of the cylinder an annular reservoir chamber, working liquid filled in the cylinder and in the lower portion of the reservoir chamber, pressurized gas filled in the upper portion of the reservoir chamber, a seal member engaging with the piston rod to seal the shock absorber from the outside, a path connecting the lower portion of the reservoir chamber with the interior of the cylinder, a passage connecting the upper portion of the reservoir chamber with the interior of the cylinder, and check valve means disposed in the passage. The check valve means is formed separately from the seal member and comprises an annular resilient valve member secured to a retaining member formed of a metal.

Abstract: Unidirectional flow limiter housed in a union between a pipe and a user apparatus, comprising a first channel, a second channel, a flow reduction member between the two channels, a third channel, and a non-return valve in the third channel constituted by a deformable annular member placed concentrically about one of the first or second channels.

Abstract: A dispensing syringe comprising telescopically engaged inner and outer sleeves or cylinders having corresponding dispensing ends and open receiving ends, an insert cup extends across and is positioned in the outer cylinder at its dispensing end, and a pair of identical resilient seal diaphragms engaging the outer surfaces of the dispensing end of the inner cylinder and of the insert cup for flow of material through the syringe in one direction. The seal diaphragms are of the same constructions for resilient engagement with the ends of the inner sleeve and the insert cup.

Abstract: There is disclosed a tubular connector for connecting the end of a tubular gas carrying conduit to the mouth of a thermoplastic bottle containing a liquid wherein the mouth prior to use has a breachable seal. The connector comprises two oppositely facing cup means each having internal threads therein, one to be screwed to the gas conduit the other to the mouth of the bottle. The two so disposed cups are connected by axially disposed tubular means extending respectively from each bottom of the cups whereby they are maintained in spaced relationship. That cup that is attached to a gas conduit is supplied with a relief valve at the bottom of the cup whereby excess gas pressure in the system is permitted to escape. At the same time a thin annular membrane is associated with the said relief valve whereby an audible sound is achieved due to the escaping gas.