Abstract: A valve for aerosol container to dispense a given amount of aerosol from an associated aerosol tank, comprising a base solid providing a valve chamber and a valve stem slidably fitted and upwardly biased by a spring in the chamber. An inlet is made on the bottom of the chamber thereby permitting injection of aerosol from the associated aerosol tank. The valve stem provides a longitudinal channel and an outlet communicating the channel with the valve chamber, and a valve head fixed to the bottom end. A valve ring fitted at the upper side of the chamber in air-tight fashion shutting the outlet all the time. Whereby on depression of the valve stem, the valve ring is yieldingly bent for opening the outlet of the valve stem, thereby allowing a predetermined amount of aerosol to flow out of the valve chamber and eject from the longitudinal channel of the valve stem while shutting the inlet on the bottom of the chamber with the valve head of the valve stem.

Abstract: A valve wherein the housing has an internal seat having a sealing face which surrounds a seat area that is inclined with reference to the axis of a stem for the valving element. The sealing face is tapered and forms part of a conical surface. In order to ensure that the valving element is pressed against the sealing face, the line of action of the force which is applied by the stem is eccentric to the axis of the conical surface.

Abstract: An automatic air pressure relief and check valve assembly which may be used in combination with a swimming pool filter or separation tank. The valve assembly includes a normally open lower valve which is responsive to the tank's being full of water for closing the lower valve, and a normally closed upper valve which is responsive to air being expelled from the tank through the normally open lower valve for opening the upper valve during times when water is filling the tank. The upper valve may be selectively opened when air is required to enter the tank so that water may be drained from the tank. Preferred embodiments of the upper and lower valves include valve seats having conical surfaces and respective valve members which cause an included O-ring to roll upon and wedge against its conical seat for reliably closing each valve.

Abstract: A valve to control abrasive fluids under high pressure has a plastic seat. A circular ridge peripherally formed on the valve cartridge sealingly engages the seat. A means is provided within the valve cartridge to support the seat axially and radially. The diameter and taper of the poppet match those of a mating recess in the seat.

Abstract: A relief valve comprises a stationary valve seat and a poppet member which has a valve surface sealingly engageable with the stationary valve seat. The poppet member has an axially extending wall in the vicinity of the valve surface. When the poppet valve is displaced from the stationary valve seat, the low pressure which is exerted against the poppet valve in the vicinity of the poppet valve surface resulting from fluid flowing between the stationary valve seat and the poppet valve surface is generally substantially exerted in a radial direction against the axial wall to thereby prevent reseating of the poppet member at the initial opening conditions for the relief valve.

Abstract: A pulse-width-modulated solenoid valve has a body provided with an elongated chamber. The body has inlet and outlet openings communicating with the chamber, and has a seat surrounding the inlet opening and arranged to face into the chamber. An armature is mounted in the chamber for movement therealong toward and away from the seat. A coil is mounted on the body, and is adapted to be selectively energized to move the armature in one direction relative to the body. A return spring is arranged to urge the armature to move in the opposite direction relative to the body. The improvement provides a valve element which is mounted for movement with the armature toward and away from the seat, but also mounted for movement relative to the armature when the element engages the seat, such that the mass of the armature will not exert a substantial force against the seat. According to the improvement, the operating life of the valve may be greatly extended.

Abstract: A mechanism wherein a poppet for opening and closing a valve seat which is disposed on the internal peripheral surface of a body has the outside diameter on the side opposite the valve seat made slightly smaller than the outside diameter on the side of the valve seat. An abutment portion of poppet is formed as a convergent tapered surface, and when the valve is closed, the poppet is slidably moved in an aligning direction with respect to the body.

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: Valve seat structure for an automotive thermostatic fluid control valve device which is adapted to be positioned within a coolant fluid conduit system of an automotive engine. The valve seat structure has a rigid fluid flow control member which includes a cylindrical wall which forms a fluid flow passage. The rigid fluid flow control member also has an annular base which encompasses the cylindrical wall. An elastomeric sealing member resiliently encompasses the cylindrical wall. The elastomeric sealing member has an abutment portion and a clamping portion. Preferably, the abutment portion and the clamping portion are separated by a shoulder. A rigid clamping member has a clamping portion which is in engagement with the clamping portion of the elastomeric sealing member and is adapted to be clampingly engaged by a part of the coolant fluid conduit system. The rigid clamping member also has a shoulder portion which engages the shoulder of the elastomeric sealing member.

Abstract: The capability of this shock absorber or damper changing the energy of motion into heat progressively increases as the suspension components progressively wear and become more flexible over their service life. This is accomplished by the use of flow controlling concentric seats of different heights on the rebound valve element. As the outer and higher seat wears down, the working area of the valve element decreases with the inner seat being operative to increase the load to generally compensate for the reduction in friction in the suspension thereby providing a more consistent ride as a function of use.

Abstract: In a valve on a processing plant in the chemical apparatus field, which has a valve housing, a feed flange and a discharge shaft, together with a valve seat arranged in the vicinity of the feed flange and an associated valve cone, at least the contacting parts of the valve seat and valve cone are made from metal. The inner wall of the valve seat formed as a surface of revolution is provided in the flow direction with two adjacent areas having different diameters and which are separated from one another by an edge. When the valve is closed, only the valve seat edge engages on the circumferential surface of the valve cone. In the first area facing the feed flange, the valve seat wall preferably has a substantially constant radius which continuously increases in the flow direction in the following second area, resulting in particularly reliable closing behavior. This can be further aided by an axially acting spring element.

Abstract: A special control valve plug is disclosed. It includes the integral combination (1) of a spherical radiused or ball type seating surface and (2) a conically tapered flow control tip. When the valve is closed, the spherical radiused plug seating surface provides a positive fluid seal. When the valve is open, the tapered tip provides precise proportionate and continuously variable control of fluid flow.

Abstract: The improved choke includes a body with an internal valve chamber, an inlet and an outlet communicating through the body into the valve chamber, a valve seat surrounding the opening of the outlet into the valve chamber, and a valve member mounted within said body to move toward and away from said valve seat to control flow therethrough, means for moving the valve member in said body, the valve member having a stem and a replaceable, wear-resistant tip which is provided with a sleeve insert secured within the stem opening and having internal threads which mate with external threads on the end of the stem, the tip recess includes a groove into which a portion of the sleeve insert is swaged to secure it tightly into the tip.

Abstract: A control for use by a patient who is connected with a respirator comprises a valve housing which has an interior valve chamber with a gas inlet extending into the chamber and terminating at an annular valve seat which is closable by a diaphragm. A gas outlet is also connected into the valve chamber. The valve housing also has a control chamber in the opposite side of the diaphragm from the valve chamber and an inhaling gas supply connection extends into the control chamber. In addition a gas take-off conduit connectable to the patient is connected into the control chamber. The gas take-off is provided with an orifice plate which defines a reduced area in the take-off so that during use by the patient during inhaling a pressure lower or higher than the pressure in the valve chamber is produced in the control chamber and opening or closing of the diaphragm end valve is effected to permit or prevent exhaled gas to pass through the gas inlet connection to the valve chamber and then to the gas outlet.

Abstract: A control valve in which a surface of a valve seat closer to a valve body is formed so as to be flat. A valve head corresponding to an annularly formed fluid-communication passage is provided with an annular inner convex projection and an annular outer convex projection. These projections engage with the flat surface of the valve seat on the inner side and the outer side of the fluid-communicating passage, respectively. The valve head is provided with a communicating passage for providing communication between a valve body-driving portion side thereof and a valve seat surface side containing the inner convex projection.

Abstract: A liquid dispensing apparatus is provided having a container for storing the liquid to be dispensed, an anti-drip valve cartridge connected to the container and a needle element connected to the valve cartridge. A device is provided for pressurizing the container for the duration of a time interval and for depressurizing the container to atmospheric pressure, simultaneously, with the end of the time interval. The valve cartridge has an outlet portion which sealably connects an outlet opening thereof in registry with the bore of the needle element. A pressure activated poppet valve can be provided in the valve cartridge to seal the outlet opening upon the depressurization of the container. After depressurization, a volume of liquid is left in the needle element which exerts a pressure at the end of the needle element that is less than the incoming atmospheric pressure.

Abstract: A sealing device for a high vacuum valve having a movable member which is adapted to be moved to open and close said valve, wherein a first sealing surface is formed on the movable member and a second sealing surface is formed on a housing of the valve with the first and second sealing surfaces being moved relative to each other during movement of the movable member. The first and second sealing surfaces are spaced apart when the valve is in the closed position and a solid sealing member is interposed therebetween, the sealing member being formed with an annular configuration having an inner rounded edge and an outer rounded edge adapted to be engaged between the first and second sealing surfaces. The outer edge of the annular sealing member is formed with a smaller curvature than the inner edge.

Abstract: An internal combustion power plant system provides a rotary engine and a rotary fuel/air mixture compressor for the rotary engine on a common driveshaft, coaxially mounting each end and supported between them by a gearbox which synchronizes operation of various ignition and valve and abutment components of the system; compressed fuel/air mixture is supplied to and ignited in a valve-isolated manifold chamber in the rotary engine in successive charges following which each ignited charge is valved radially into one of plural expanding chambers defined by the rotary engine rotor and abutment mechanism, where it urges rotation of the rotor and then exhausts radially; in preferred embodiment the exhaust actuates a parallel fuel-feed which booster pumps fuel/air mixture into the manifold chamber; detail improvements disclosed include designs of runners, abutments, valving and rotary compressor mechanism.

Abstract: A slidable throttle valve assembly for a carburetor comprising a carburetor body with an intake passage therein, a slidable throttle valve movable across the intake passage, and a throttle valve guide tube connected to the carburetor body and guidably supporting the slidable throttle valve. The carburetor body has guide grooves for guiding the slidable throttle valve which are respectively provided in the body at opposite sides of the intake passage so as to be continuous with the throttle valve guide tube. The throttle valve and guide grooves are of part-circular, cross-sectional shape so that the throttle valve and guide grooves come into contact with each other respectively along lines extending in the sliding direction of the slidable throttle valve downstream of the intake passage.

Abstract: A shut-off valve has a sealing cone which in a closed position of the valve abuts against a conical sealing seat and is formed as a part of a cylindrical throttling piston, a sealing surface of the sealing seat cooperates at its one end with a cylindrical receiving opening for the throttling piston, and the outer diameter of the throttling piston is selected with respect to the inner diameter of the receiving opening so that a throttling gap is formed between the receiving opening and the the throttling piston.

Abstract: This disclosure is directed to a nipple particularly adapted for feeding liquid to fowl and/or small animals, the nipple including a housing in which is press-fit a relatively thick walled machined metallic insert defining a passage through which liquid is adapted to pass from an upstream portion to a downstream portion thereof, a valve in the passage defined by a pair of peripheral valve seats and a metallic spherical ball normally resting upon the peripheral valve seats, the first peripheral valve seat is upstream from the second peripheral valve seat and has a diameter less than the diameter of the spherical ball but greater than the diameter of the second peripheral valve seat, a stem defined by a head and a pin, the stem having a concave surface within which is fully seated the spherical ball, and a surface of the insert upstream from the first peripheral valve seat being operative for both centering the metallic ball relative to both the first and second peripheral valve seats and for preventing the est

Abstract: A valve seat in a knife gate valve is positively retained between a liner and a retaining ring.

Abstract: Fluid blast control apparatus for use in controlling a high pressure fluid in a fluid blast system, the apparatus including a body portion having an inlet for a source of fluid at high pressure, having a discharge outlet for the discharge of fluid at high pressure, having a dump outlet for the discharge of fluid at low pressure, and having a control chamber to place the dump outlet in communication with the inlet and the discharge outlet; a valve guide housing removably positioned in the flow chamber, the valve guide housing having a housing bore for housing a valve closure member, having guide means for guiding such a valve closure member during displacement thereof relatively to the valve guide housing, and having a valve seat; and a valve closure member housed in the housing bore, the valve closure member having a closure seat, and the valve closure member being adapted to be displaced relatively to the valve guide housing into a closed position for the closure seat to seat on the valve seat to control flo

Abstract: A toy balloon has an inflation valve secured thereon to selectively fill a chamber of the balloon with a fluid, such as helium. The valve comprises a stem defining a filling passage therethrough for communicating a pressurized fluid source with the inflatable chamber of the balloon and an elastomeric plug reciprocally mounted in the passage for movement in a first direction towards the chamber to openly communicate the passage with the chamber to permit filling thereof and for further movement in a second, opposite direction away from the chamber to seal the passage to prevent escape of the fluid from the balloon. The inner surface of the stem and/or the outer surface of the elastomeric plug may be suitably sized and tapered to permit the sleeve to compress the plug for sealing purposes when it is moved in its second closing direction. An annular bead may be formed internally on the sleeve to compress the plug to form an annular static seal between the sleeve and the plug.

Abstract: Valve seat structure for an automotive thermostatic fluid control valve device. The valve seat structure comprises a rigid fluid flow control member which includes a cylindrical wall which forms a fluid flow passage and an annular base which encompasses the cylindrical wall. An elastomeric sealing member or engagement member resiliently encompasses the cylindrical wall and is clamped between two portions of a fluid conduit to position the valve seat structure within the fluid conduit. The elastomeric sealing member is also engageable by a movable valve member to control fluid flow through the fluid flow passage. The cylindrical wall extends beyond the elastomeric sealing member and protects the elastomeric sealing member against the forces of fluid flow.

Abstract: A valve apparatus incorporating a deformable valve and valve seat is disclosed. The valve apparatus includes two premolded spheroid valve elements fabricated of resilient material deformable to preselected configurations. The valve elements are secured to pipe ends extending within a fluid housing. The valve deforms upon axial movement of the pipe end and is shiftable relative to the valve seat for opening and closing the valve apparatus.

Abstract: A normally-open, solenoid-controlled valve includes a stationary valve-seat spindle and a cylindrical valve sleeve encircling and slideable along part of the valve-seat spindle. The valve-seat spindle has an annular control edge and the valve sleeve includes a pressure-responsive surface which is reciprocably moved into and out of valve-closing contact with the control edge. The valve-seat spindle includes a flow passage therein extending to and discharging into a plenum region formed radially inward of the control edge between the spindle and the sleeve. The pressure-responsive surface of the valve sleeve is a substantially continuous frustrum of a cone whose apex extends in the direction of the valve opening and which extends radially outward from a sleeve inner diameter A to an outer diameter C (point C) of discontinuity in that surface.

Abstract: This disclosure is directed to a nipple particularly adapted for feeding liquid to fowl and/or small animals, the nipple including a housing in which is press-fit a relatively thick walled machined metallic insert defining a passage through which liquid is adapted to pass from an upstream portion to a downstream portion thereof, a valve in the passage defined by a pair of peripheral valve seats and a metallic spherical ball normally resting upon the peripheral valve seats, the first peripheral valve seat is upstream from the second peripheral valve seat and has a diameter less than the diameter of the spherical ball but greater than the diameter of the second peripheral valve seat, a stem defined by a head and a pin, the stem having a concave surface within which is fully seated the spherical ball, and a surface of the insert upstream from the first peripheral valve seat being operative for both centering the metallic ball relative to both the first and second peripheral valve seats and for preventing the est

Abstract: A closing arrangement for a conveyor line for a mixture containing an abrasive solid is composed of a fluid-tight valve and of a solid-tight auxiliary closing part which acts in the direction of flow in front of the valve and can be closed before the valve in time to protect it. According to the invention the auxiliary closing part is formed by a casing arranged inside the valve which casing is movably guided in the direction of the movement of the valve disk. This casing protects the valve seat from the flowing medium in a direct end position which it assumes when the valve is open. During the closing movement the valve disk contacts the casing edge before it reaches the valve seat. This essentially blocks off at least the abrasive part of the flow medium, so that the valve disk can approach the valve plate under protected conditions, while at the same time the casing is pushed against an elastic force.

Abstract: A valve having a body with a valve chamber therein, an inlet into the valve chamber, an outlet from the valve chamber and an opening to the valve chamber aligned with the outlet, a bonnet secured to the body covering the opening, and having a tubular projection, a valve seat insert having a valve seat positioned in said outlet, a valve member, means for moving the valve member toward and away from the valve seat to control flow from the valve, means for releasably securing the valve seat insert to the bonnet tubular projection.

Abstract: A three-way valve assembly having a reciprocable valve plunger movably controlled by a solenoid. The valve housing has an elastomeric orifice member seated thereon, which orifice member controls flow of pressure fluid from a source. The valve plunger has an enlarged nondeformable valve surface thereon which engages a projecting end portion of the orifice member for sealingly closing off the orifice.

Abstract: A solenoid actuated fluid control valve comprises a porting member including a port and a conical valve seat circumscribing the port, and a relatively movable port closing valve element such as a needle valve element including a resilient conical tip. The valve seat and tip are correspondingly tapered and a small annular bead is provided on the resilient tip which provides for initial and preferably total sealing of the valve. Also provided is a suitable stop such as a shoulder on the needle valve element body adjacent the resilient conical tip thereon which engages an opposed surface on the porting member to prevent overcompression of the resilient conical tip and preferably to limit sealing contact to the area of the sealing bead.

Abstract: Flow from the inlet chamber to the outlet chamber is regulated by the sleeve valve moving relative to the metering cone fixed in the valve body. The valve is guided in the stainless steel ring molded into the partition between the chambers. The valve is actuated by a hybrid linear actuator. The valve seats on the shoulder or flange and the effects of lift-off of the valve are minimized by the sharp edge on the valve and by the uniform diameter section of the metering cone. The sleeve valve is offset inwardly so the I.D. at the sharp edge is the same as the O.D. where the valve passes through the ring. This prevents loss of control of the valve. The valve hits a stop before the sleeve clears the cone and this prevents the valve from reaching a position in which the actuator and return spring have no effect.

Abstract: In the embodiment shown, the valve has a seat and a stop plate with valving elements therebetween. The seat has pluralities of openings formed therein, and the stop plate has a central void. The valving elements move, to open or close off communication between the openings and the void, in response to pressured fluid. Each element controls fluid flow through a pair of openings. The valve seat has angularly-formed lands with which the elements, correspondingly angularly formed, nest to close off fluid communication through the valve.

Abstract: Disclosed is a straightway valve comprising a housing made from interconnected stiff members, closing members made as toothed plates (10) pinched between the adjacent stiff members. Every toothed plate (10) is made as teeth (11 or 12) having their roots secured to a backing (20).

Abstract: A back pressure inducer and check valve is disclosed for use with a fluid system having inlet passageway, an outlet passageway and in which fluid flows from the inlet and to the outlet passageway. The back pressure inducer comprises a valve seat secured to the system and having a fluid port fluidly between the inlet and outlet passageways. A valve member is movable between a closed and open position to variably open the fluid port while a spring urges the valve member towards its closed position. Cooperating conical surfaces on the valve member and valve seat form an annular passageway when the valve member is in its open position to produce controlled pressure drops between the inlet and outlet conduit over a wide range of fluid flow rates.

Abstract: An electromagnetic fuel injector comprising a valve body composed of a spherical valve member and a hollow cylindrical slide member which is adapted to slide along a guide hole and the interior of which is a fuel passage. The slide member is provided with openings for passing liquid fuel therethrough at its peripheral wall. A circumferential clearance ranging from 4 to 30 .mu. is provided between the outer surface of the slide member and the inner surface of the guide hole. At least one of the valve member and the slide member which members constitute the valve body is formed of titanium, titanium alloy, ceramic or ferric material. With this arrangement, the slide member may be fabricated without a strictly high accuracy and the mass of the valve body may be reduced, thus increasing the response characteristics of the valve body to the on-off operation of an exciting coil.

Abstract: A gate valve and seat therefor, the valve including a valve body defining a longitudinal flowway and a valve element mounted in the valve body and movable transverse to the flowway between open and closed positions. A valve seat is mounted in the valve body for limited axial floating movement with respect to the valve body, the seat comprising a seat body having a generally axially facing contact face for engagement with one side of the valve element. The contact face has an annular groove therein intermediate its radially inner and outer extremities, and the seat body further has at least one vent communicating with the annular groove and extending outwardly therefrom to the radially outer extremity of the seat body.

Abstract: A liquid dispensing device is disclosed in which there is a movable needle valve operable to open and close a valve seat located within the nozzle of the dispensing device. The needle valve is guided by a guide bushing contained within the nozzle bore. A very small radiused semi-spherical end surface on the nozzle has been found to eliminate stringing of viscous liquid materials dispensed from the nozzle, particularly when the end surface is combined with a needle valve which is maintained concentric with the nozzle orifice by the guide bushing contained within the nozzle bore.

Abstract: A valve construction having a valve seat and a movable valve member for opening and closing the valve seat and being operatively interconnected to a thermal power element carried by the valve construction, the valve member having a relatively narrow annular edge for closing against the valve seat in a direction substantially perpendicular to the valve seat and the valve seat having an annular flexible elastomeric insert that is wider than the annular edge of the valve member whereby the annular edge of the valve member closes against the annular flexible elastomeric insert within the inner and outer peripheral edges thereof to close the valve seat. The edge of the valve member is turned to present a knife-edge to the insert and an arcuate annular surface on the valve member that begins at the knife-edge.

Abstract: A valve of the Y pattern is disclosed which is useful for stopping gas flow in a vacuum system. The valve has particularly good sealing characteristics needing moderate pressures to seal in a uranium hexafluoride environment. Heretofore an environment of uranium hexafluoride required high sealing pressures to be developed at the valve seat.

Abstract: An axially magnetized cylindrical permanent magnet has a valve plug projection at one end for seating in a valve seat. It moves axially within a cavity, provided by two cup cores of ferromagnetic material, which is bisected by a medium ring that has an aperture allowing the permanent magnet to slide within it. Each cup core has a re-entrant central pole, one of which carries the valve seat and is bored to provide one valve port. Windings between the re-entrant poles and the core shells are concurrently energized in such a way as to produce like poles at the re-entrant pole faces, so that one will repel the permanent magnet and the other will attract it. A pulse of current is sufficient to open or close the valve and may be followed by a reverse pulse to brake the plug in order to reduce wear. The permanent magnet force holds the plug in either end positon when there is no current.

Abstract: Mud choke apparatus is disclosed, and the preferred embodiment has the form of a hollow, tubular body receiving a mud flow introduced from a lateral port, the flow being directed through an axial passage and past a valve seat. The valve seat is a replaceable, hardened metal liner and is formed with a gradual taper so that the mud flows from the large end through the tapered, smaller end. Thereafter, it flows out of the body through an axial opening. The flow of mud is throttled by a tapered, hardened plug serving as a valve element which is received into the valve seat. A hydraulic cylinder and piston with a connecting rod move the plug. The plug has a surrounding, perpendicular shoulder which seals and seats against a shoulder on the insert to fully close the throttling valve apparatus. Flow is choked by inserting the tapered plug with controlled clearance into the tapered valve seat.

Abstract: A valve comprising a body having a chamber therein, fluid inlet and outlet ports in communication with the chamber, an opening for a valve plunger, and a nipple extending into the chamber having a passage constituting one of said ports. A valve plunger extends through the opening in the body and is movable toward and away from the nipple, the plunger comprising a generally conical valve member at its end toward the nipple in axial alignment with the passage in the nipple. A sleeve of resilient material of generally circular section is secured to the nipple and has a portion extending beyond the end of the nipple. The inner surface of the extending portion of the sleeve at the free end thereof is countersunk thereby forming a frustoconical valve seat.

Abstract: There are disclosed herein several embodiments of a pressure responsive discharge valve assembly particularly adapted for use in reciprocating type gas compressors. The valve assembly includes a discharge passage valve seat of frusto conical shape in which a generally complementary shaped light-weight valve member is disposed. The valve member is preferably formed from a polymeric material, but may also be formed of metal. The materials used and the relative geometry of the valve seat and member are such as to reduce clearance or reexpansion volume, provide quiet closure with good sealing, long life and high speed operation, and still have the required flow areas at low valve lifts, thereby providing improved flow characteristics and efficiency. The included angles of the valve and seat are slightly different to provide progressive closing and sealing without permanent deformation.

Abstract: Filler nozzle and valve for products comprising high to low viscosity fluids, with or without suspended solids, particularly useful in filling pouch containers. The nozzle body has a vertical bore and also a side port entering the bore near its lower end at about a 60.degree. angle. The valve piston reciprocates in the bore and seats at the bottom of the bore. Below the seating portion of the valve member is a concave-conoidal non-drip tip.

Abstract: A high pressure coupling valve for operably interconnecting a source of gas under high pressure with a high pressure gas system. The device comprises a hollow valve body adapted to be connected to the high pressure system and has at one end an elongated frusto-conically shaped valve seat. A valve stem adapted to be connected to the source of high pressure gas is provided with a gas flow passage and includes an elongated frusto-conically shaped valve face. The valve stem is reciprocally carried within the valve body and mechanical actuating means are provided to move the valve stem relative to the valve body to bring the valve face into positive sealing engagement with the valve seat. The unique design of the valve seat, the valve face and the actuating means permits the device to be repeatedly opened and closed without any cutting, mechanical abrasion or other degradation of either the valve seat or valve face.

Abstract: An erosion resistant control valve or adjustable choke has a body with a side inlet, an end outlet and a conical valve seat in alignment with the outlet. Downstream from the valve seat are a converging passage having a smaller taper than the valve seat, a cylindrical passage and a diverging passage. A stem aligned with the seat assembly includes a plug having a tapered seal surface near its upstream end for engaging the valve seat and a converging control surface downstream therefrom with the same taper as the converging passage. The smaller end of the control surface is in the cylindrical passage when the valve is closed and in the converging passage is fully open for localizing erosion downstream from the valve seat. A bleed passage relieves pressure from within the valve before the valve bonnet can be removed. The valve can be locked in a selected control setting by a split ring engaging the stem.

Abstract: In metal-to-metal sealed high vacuum valves, a parallel motion of the sealing faces relative to each other is to be prevented, to avoid damaging of the faces during their mutual contact. This is obtained by means of a cup spring type shutoff member having a sealing face on its periphery, cooperating with the inner edge of a second conically shaped annular spring element as the opposite sealing face. The flexural stiffnesses and lever arm lengths in the radial direction of the two spring elements are to be approximately equal to each other. To ensure that the spring elements can perform their motion only in the direction of normals to the sealing faces, a guide cone having an engaging portion is advantageously provided.

Abstract: A sealing system for a shutoff element having two substantially ring-shaped sealing elements forming at least two substantially ring-shaped sealing lines. A given one of the sealing elements is constructed as a thin-wall body which is elastically deformable under the action of a closing force. The given sealing element, in the closed position of the shutoff element, under deformation of its wall bearing against the other sealing element at least at two ring regions with line contact. Means define free deformation spaces for the wall of the thin-wall body beneath said ring regions, and means define a respective support adjacent said deformation spaces and extending substantially parallel to the ring regions and against which bears said wall.