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 diverter valve has a "Y" shape with a single inlet and two branch passageways formed at a confluence region of the "Y". A double sealing member paddle is pivoted on a shaft and located at the confluence of the two branches. The branches each have a replacement tapered seal seat. Rotation of the shaft in one direction forces one sealing member of the paddle onto one seat for full 360.degree. contact with the seat. Rotation of the shaft in the other direction forces the other sealing member of the paddle onto the other seat. A continuous peripheral seal contact is made with the seat. The seals and seats are concentric with the branch passageways and easily machineable and replaceable. The arrangement provides for smooth flow through the valve.

Abstract: An adjustable nonreturn ball valve for connection in a pipeline includes an elongate unobstructed main housing arranged to be connected at each end to flow pipes. There is an auxiliary housing located intermediate the ends of the main housing which has a longitudinal axis obtuse to the longitudinal axis of the main housing. There is a removable circular valve seat extending across the main housing at an obtuse angle relative thereto. The main housing is formed in two sections which are joined together at the plane of the valve seat. A ball is positioned to close upon the valve seat and is loosely entrapped in the auxiliary housing to allow flow in only one direction through the main housing, in which event and in use the ball automatically rides up in the auxiliary housing and away from the valve seat. The ball and the auxiliary housing have diameters greater than the diameter of the main housing, thereby preventing the ball from moving through the main housing.

Abstract: A direct acting valve assembly including a valve body and a guide tube attached thereto. An insert is secured within the guide tube and includes a central aperture and at least one filtering aperture. The valve body includes an annular surface between an annular inlet and a centrally located outlet, and an annular seal is positioned in a central recess in the bottom of the insert and adjacent the annular surface to provide a fluid tight seal therebetween. The guide tube receives a closure member which has one end tapered to a point positionable through the central aperture of the insert and adjacent the annular seal. A spring and solenoid combination is operable to move the closure member between a first position displaced from the annular seal and opening the valve and a second position adjacent the annular seal and sealing the central passageway.

Abstract: A ball valve seat is provided which comprises two separate reinforcement members, preferably of metal, embedded in an annular resilient body. The interior of the resilient body defines at one end a part-hemispherical ball valve seat and at its other end, of greater wall thickness, an outlet controlled by the ball valve. One of the reinforcing members has a flared skirt extending into the narrower wall thickness end of the resilient body and a narrower neck located in the wider wall thickness end of the resilient body, where it is received in an annular groove in the second reinforcement member. A portion of the second reinforcement member extends within the wider wall thickness end of the resilient body radially of the first reinforcement member over its skirt portion.

Abstract: A sealing arrangement of the cylinder head with respect to the cylinder block by means of a flat seal which is constructed as intermediate plate and extends from the edge of the cylinder bore also up to its cylinder axis; essentially only circular openings for disk valves are provided in the intermediate plate so that the latter represents a thermal insulation of the combustion space with respect to the cylinder head.

Abstract: A direct acting valve assembly including a valve body and a guide tube attached thereto. An insert is secured within the guide tube and includes an upraised valve seat surrounding a central aperture. The valve body includes an annular surface between an annular inlet and a centrally located outlet, and an annular seal is positioned between the annular surface and the insert to provide a fluid tight seal therebetween. The guide tube receives a closure member which carries a valve seal positionable against the upraised valve seat of the insert. A solenoid is operable to move the closure member from a first position displaced from the insert and opening the valve and a second position adjacent the insert and sealing the central passageway.

Abstract: A multiposition selector valve of the rotary type includes a valve body having a single inlet port and a plurality of outlet ports. Fluid communication between the inlet port and any one of the outlet ports is provided via a check valve assembly mounted on the valve body, and via a fluid-providing conduit connected at one end to the inlet port via the check valve. The other end of the conduit is movable in rotary fashion for fluidtight engagement with any one of a plurality of valve seat areas associated with the outlet ports. The valve seat areas are integral portions of a flat metal disk that can be removed from the valve body to facilitate maintenance of the valve. A single handle rotates the conduit through its various selected outlet positions and operates the check valve assembly to open and close the valve at selected outlet positions.

Abstract: An improved faucet device with a swivel spout and an inline valve cartridge, comprising a valve body consisting of two substantially identical molded plastic parts and including a molded plastic sleeve valve member and a pair of combination valve seat and seal members secured inside the valve body to provide a seal with the movable sleeve valve member.

Abstract: Disclosed is a slide valve in which the valve internals, the valve seat, guides and slide valve are maintained in position by a clamping action of an abutment in the valve body and on the valve liner secured in the body by a quick make-up connection. The slide valve is suited for all sizes of valves, both large and small and no screws or other fasteners are needed to maintain the valve internals in position. Advantageously, the guides and slides of the slide valve are maintained out of the flow path, and the valve internals including the orifice assembly with its valve seat and guides, and slide valve with its slides are readily removable through the bonnet area.

Abstract: A valve assembly with a resilient metal seat member is disclosed for providing a gas-tight seal in a gas handling system. The valve assembly also includes a valve element for sealing against the valve seat member; and an actuating means for operating the valve element. The valve seat member is a one-piece stainless steel ring having a central valve port and peripheral mounting flange, and an annular corrugation in between. A groove between the first and second ridges serves as a flexure zone during operation of the valve member and thus provides the seating pressure between the inner ridge or valve seat and the valve element. The outer annular ridge has a diameter less than said valve element to limit the seating motion of the valve element, preventing non-elastic deformation of the seat member.

Abstract: A cold box valve, employed in cryogenic environments, includes a valve body assembly with a fluid inlet and a fluid outlet. The valve body assembly includes a valve body and bonnet. The bonnet seals the top of the valve body to which access to the valve internals is provided. A trim assembly, including an inner tube is removably mounted within the valve body. A cage is secured to the inner tube and a valve seat ring is removably mounted on the cage by at least one pin. Once assembled, the valve seat ring engages the valve body surrounding an opening between the valve inlet and valve outlet. A seal is mounted within the valve seat ring to provide a fluid seal between the valve seat ring and the valve body. A valve plug is reciprocally mounted within the cage and a stem connected to the plug extends out of the body to be connected to an actuator. A spring is mounted within the valve bonnet and engages the inner tube for biasing the valve seat ring into engagement with the valve body.

Abstract: A needle valve comprises a valve body including a conduit portion through which a flow passage is formed and a bonnet portion which screws into a cylindrical well formed in one side of the conduit portion to intersect the flow passage and form a valve chamber within the valve body. The bonnet portion is bored through to support a valve stem upon which is mounted a frusto-conical member, the valve stem and the bore through the bonnet portion being threaded for movement of the frusto-conical member transversly across the flow passage via turning the valve stem. A tubular liner, formed of a flexible material, extends around the periphery of the valve chamber and is split into two semi-cylindrical sections which receive the frusto-conical member and are spread thereby against portions of the valve chamber wall pierced by the flow passage as the frusto-conical member is seated in the liner.

Abstract: A safety pressure relief device for a refrigerated liquified gas storage vessel having a large diameter valve seat mounted on the vessel, a valve closure movably mounted to engage the valve seat to close flow therethrough and to move away from the valve seat to relieve pressure in the vessel, a spindle extending through the seat and guided by a spider spanning the seat, a spring within the vessel biasing the valve closure toward the seat and means of preselected strength retaining the valve closure on the seat unitl a preselected maximum desired fluid pressure is reached within the vessel at which time such retaining means fails and valve closure moves to open position to provide large area relief of fluid pressure from the vessel.

Abstract: An improved quick connect tube coupling which allows one design for the male coupling portion to be used in either single or double end shut-off applications. A new opening means for the valve located in the female coupling portion is provided for single end shut-off applications and a new valving arrangement located in the male coupling portion is provided for double end shut-off applications. An improved valve seat construction disposed in the female coupling portion is also advantageously provided.

Abstract: A sealing arrangement, particularly for sealing a valve piston relative to a valve housing, has a plurality of sealing rings arranged to be located between a valve piston and a valve housing, and axially spaced from each other, and a plurality of supporting rings located axially adjacent to each other and arranged to support and hold the sealing rings, wherein the supporting rings are connected with the sealing rings in interengaging manner so as to form together with the latter an integral unit which can be mounted and dismounted as a whole.

Abstract: A bimodal, non-venting pneumatic relay senses the presence or absence of a first pressurized fluid and controls the supply or temination of a second pressurized fluid to associated equipment. The relay includes a segmented housing defining plural grooves which accept annular seals, a valve stem against which the seals seat and a reversible piston. The reversible piston can be selectively oriented and installed to provide either, manual rest operation to interrupt the supply of the second fluid if the first fluid supply is interrupted, the relay requiring manual resetting to reestablish supply of the second fluid, or automatic reset operation, wherein restoration of the second fluid supply is achieved automatically if the first fluid pressure is re-established subsequent to an interruption.

Abstract: A pilot operated pressure relief valve for use on medium and high pressure vessels, conduits, and the like. A two-stage, non-flowing pilot valve operates a main relief valve of substantially greater capacity. In a preferred embodiment the main valve is mounted directly onto the pressure vessel which is to be vented at a predetermined pressure. The pilot is preferably mounted closely adjacent to the main valve for operating communication therewith. An improved main valve seal is provided which allows the use of commonly available seal configurations in a simple and easily assembled construction to provide a fast operating, high pressure seal.

Abstract: An automotive thermostatic valve which comprises a stationary portion and a movable portion. The stationary portion comprises a rigid frame member which includes a central portion and an outer annular portion. The outer annular portion is joined to the central portion by radially extending spokes. The outer annular portion of the rigid frame member is covered with a body of elastomeric material which is shaped to provide a valve seat surface for engagement by the movable portion of the valve and is also shaped to provide a securing region which is clamped within a fluid conduit within which the valve is positioned. The outer annular portion of the rigid frame member has a radial portion adjacent the valve seat surface of the body of elastomeric material for support thereof and a cylindrical portion adjacent the securing region of the body of elastomeric material for support and reinformcement thereof during clamping thereof within a fluid conduit within which the valve is positioned.

Abstract: A plate check valve having a housing for mounting across a fluid passsageway to prevent reverse flow therein; a cage detachably mounted on the housing; a plurality of annular, planar, coaxial, radially spaced seat plates releasably clamped between the housing and the cage; and a plurality of axially movable, annular, planar valve plates individually related to and overlapping the spaces between the seat plates, the valve plates moving into engagement with the seat plates to prevent reverse flow through the valve and from the seat plates for normal flow through the valve.

Abstract: An annular valve seat having a resilient metal seal for use in a variety of types of valves provides positive control of fluid flow, with effective metal-to-metal sealing, long life and easy replacement of the seal. The metal seal is in the form of an annular ring comprising approximately one-quarter of a torus that cooperates with the valve's flow control element to establish a metal-to-metal fluid seal which is especially useful at relatively high temperatures. A first edge portion of the torus is held in position against a radial surface of the valve's body by a retainer ring which centers the torus about the flow control element. When the valve is closed the flow control element presses against the outside portion of the resilient metal torus forcing the free edge of the torus against a portion of the retainer ring so that the seal is loaded as a structural span supported at the ends by the valve's body and the retainer ring.

Abstract: A ball check valve is described having a fluid port, a ball moveable toward and away from the port, a seating surface surrounding the port and an elastomeric sealing element. The seating surface has a conical annular surface extending radially outwardly away from the ball and an annular ridge between the port and the conical surface. The sealing element has an outer sealing surface for contacting the conical seating surface and an annular groove for receiving the seating surface ridge. On its ball side, it has an annular outer surface and an inner sealing surface for contacting the ball. A sealing element retainer contacts the outer portion of the elastomeric sealing element outer surface on its ball side to hold it in position.

Abstract: A valve suitable for use in equalizing the pressure in chambers of a blast furnace charging installation includes a seat member which may be removed for servicing through translatory movement perpendicular to the valve flow axis. The valve is also characterized by a valve member mounted on a pivotal arm in such a manner that articulation of the valve member with respect to the end of the pivot arm is permitted.

Abstract: Improvements in a check valve are disclosed. The check valve contemplated is of the type used to halt fluid flow in a fluid-carrying pipe system, and comprises an annular seat adapted to be mounted in the fluid line, a head-mounting yoke, and a head carried by the yoke and adapted to slide axially into and out of fluid-sealing engagement with the seat. One improvement comprises a pair of valve sleeves extending, respectively, axially upstream and downstream of the valve seat; each valve has a mouth adapted for mating connection with adjacent fluid-carrying pipe structure. Each sleeve terminates adjacent the valve seat in a diagonal flange formation, and a clamp including a V-shaped collar fits over the sleeve flanges so as to urge the sleeves toward the valve seat and toward one another. A gasket having a U-shaped cross section provides a fluid-tight seal between the sleeves and seat.

Abstract: Valve for use with a tubular chemical reactor operating at pressures of over 1000 bar and temperatures of more than 250.degree. C. The actual wall thickness of the lower valve part within the area of the inlet/outlet duct is at least 35% less than the wall thickness of adjacent wall areas, the undersize being compensated by the prestress applied by the tightening bolts of the upper valve part. A lens type seal is located between the lower valve part and the upper valve part and simultaneously (1) seals the connection between the valve parts and (2) comprises the valve seat. The thermal conductivity of the seal is at least 50% lower than that of the valve material.

Abstract: A seal assembly for a valve in a mechanical setting retrievable and pressure balanced packer has a valve seal mounted on a bushing mounted around a mandrel joined to an anchor and enclosed within a balance chamber housing. The valve seal is retained between the bushing and an overlapping coaxial face seal retainer such that only a relatively small portion of the face seal ring will contact the seal surface of a valve seat on the packer.

Abstract: A metallic valve member having an annular, tapering sealing face makes practically line contact along a circle with a valve seat whose frustoconical inner portion is a sheet metal element having a rounded edge directed substantially at right angles toward the sealing face. An axial closing force applied to the valve member produces a much higher sealing force holding the edge of the seat engaged with the sealing face of the valve member.

Abstract: A simple and rugged three-way valve is disclosed which may be used as a trigger-operated control valve for portable pneumatic tools. The valve utilizes a novel valve member slidably disposed in a valve chamber for reciprocal movement between two valve seats and is arranged so that it cannot obstruct a side port that is located between the valve seats.

Abstract: A limited float or controlled float seat assembly for a gate valve with a transversely expandable gate assembly has generally L-shaped annular seat retainers fixed in recesses around the valve inlet and outlet flow passageways and generally L-shaped annular seat members mounted in a complementary relation within each of the seat retainers. The seat retainers each have an inturned lip opposite to and spaced from the end of the recess. The inturned lips form limit stops for the seat members. The seat members have an outturned lip which contacts the inturned lip of the seat retainer thereby limiting movement of the seat member when the seat member moves to an extended position. The combined amount of float for both seat members is less than the total expansion of the gate assembly from a collapsed position to an expanded position where it seals with the seat members so that drag of the seat members on the gate assembly is minimized.

Abstract: An annular valve stop insert for a compressor body is shown which has the function of establishing the positional relationship of the valve plate, valve and compressor body.

Abstract: A simple and rugged three-way valve is disclosed which may be used as a trigger-operated control valve for portable pneumatic tools. The valve utilizes a novel valve member slidably disposed in a valve chamber for reciprocal movement between two valve seats and is arranged so that it cannot obstruct a side port that is located between the valve seats.

Abstract: A seal member for a noncompression-type faucet valve comprises a cylindrical member having an open top and an open bottom, both of which are partially closed by inwardly directing flanges. The member is further provided intermediate its length with an external outwardly directed circumferential ridge. The seal member is intended for use in a faucet valve which has a rotatable valve stem having an inlet passage offset from the axis of rotation positioned within the bore of a valve housing that has an inlet port which is offset from the axis of the bore. Flow through an outlet tube leading from the bore is controlled by rotating the stem to move the inlet passage into and out of registry with the inlet port in the bore.The seal member is comprised of a resilient material such as butane rubber and it is friction fit into a seal-receiving recess about the inlet port in the bottom of the valve housing.

Abstract: An indexing valve assembly utilizes a mandrel having elastomeric seal means retained by a seal housing containing a seal island over which is slidably located a slotted indexing sleeve.

Abstract: Improvements in the seats of valves for controlling the pressure of liqui consisting in arranging the seat of the shutter of the valve in a sliding configuration in a recess of the valve body and maintaining the seat in a normal position by its bearing on a shoulder of the recess under the effect of the pressure in the pipe.

Abstract: A valve plate for use in a reciprocating gas compressor is disclosed wherein lower and upper members are held in spaced apart relation so as to define a suction gas flow path therebetween. A corrugated element is located in the flow path and bonded to said members, the corrugations thereof defining suction gas flow paths of minimal resistance, thus improving the efficiency of the compressor, while providing the support necessary between said lower and upper members.

Abstract: Pilot valve, of the quick opening and quick closing type, actuated to open or close by a hydraulic fluid acting on a piston.

Abstract: A fire hydrant having a hydrant valve seat assembly positioned between the flanged lower end of the hydrant barrel and the flanged end of the hydrant shoe. The hydrant valve seat assembly and the hydrant valve element may be retained with the hydrant shoe when the hydrant barrel is removed and replaced or the hydrant valve seat assembly and the hydrant valve element, when in the closed position, may be retained with the hydrant barrel when the hydrant shoe is removed and replaced from the barrel. The fire hydrant includes an improved valve seat ring and seat ring housing, both of which may be made of brass so as to provide easy removal of the valve seat. The hydrant is provided with an improved drain valve facing strip for cooperating with the drain passage when the hydrant valve is open.

Abstract: A venting valve for a steam decorticator has a valve chamber connected by way of a straight conduit to the pressure vessel of the decorticator. A replaceable valve seat is provided in the connection between the valve chamber and the conduit, and a valve, normally biased to its open position, is disposed in the valve chamber in such a position that direct flow of liquids from the conduit impinge on the head of the valve. The valve head is also replaceable.

Abstract: Flow control apparatus comprising a hollow body having openings or flow passages adapted to be connected to associated piping and a cylindrical closure which is reciprocated to form a seal or permit fluid flow. The sealing means consists of an annular assembly carried between two sections of the body having oppositely faced sealing members of resilient material.