Abstract: An annular gap between a valve shaft and the bore in a valve body of a steering control valve is dimensioned to accommodate relative eccentricity of parts and is sealed by a sealing gland having a rigid annular element rotatable with the valve shaft. The annular element is formed with recesses seating resilient sealing elements respectively engaging the valve shaft and an axial abutment surface of the valve body. The sealing elements are prestressed in radial directions and axial directions, respectively.

Abstract: A fire safe disc valve comprising a valve body having a flow passageway therethrough, a disc shaft rotatably mounted in the flow passageway and a disc mounted on the disc shaft, the disc being rotatable to and from a position normally closing the flow passageway by sealingly engaging a disc sealing member. An operating stem, extending through a stem operating aperture in the valve body, engages the disc shaft for rotation thereof, and an elastomeric packer seals the aperture about the operating stem. The disc shaft is displaceable along the flow passageway whereby the disc will close the passageway if the disc sealing member is destroyed, and the operating stem is axially displaceable in the stem operating aperture whereby the aperture is sealed by fluid pressure pressing the operating stem against a stem sealing seat if the stem packer is destroyed.

Abstract: A valve operator that is provided with a back seat which comes into use when the normally non-rising stem operator and its bearing-enclosing bonnet gland are raised, e.g. so that stem packing can be replaced, is further provided with another way to actuate the back seat, one which will come into play should the valve be subjected to heat of sufficient intensity as to call the integrity of the stem packing or other critical parts into question. The further activation mode depends on the melting of fusible material which permits the operator and its bearings to rise relative to the bonnet.

Abstract: An improved plug valve is of the type that includes a valve body having a bore extending therethrough and a pair of passages intersecting the bore and being substantially normal to the axis of the bore. A valve plug is disposed within the bore for selective rotation between an opened and a closed position to respectively align and misalign a port through the plug with the passages. A first circumferential sealing member between the plug and the bore above the port and the passages and a second circumferential sealing member between the plug and the bore below the port prevents fluid from escaping from an interior of the plug valve and balances fluid pressure acting on the plug. A circumferential sealing device around the top of the plug prevents ingress of foreign matter into the region of the bore above the first sealing member.

Abstract: An exhaust gas flow control valve apparatus comprising a rotary valve shaft extending across the exhaust passage in the exhaust housing. The shaft has an end portion projecting from the exhaust housing. A bimetallic element is mounted on the end portion of the shaft. A hollow collar is sealingly fitted onto the end portion of the shaft. A compression spring is arranged at one end of the shaft, so as to urge the hollow collar against the wall of the exhaust housing, for preventing leakage of the exhaust gas.

Abstract: A pressure balanced gate valve mechanism wherein a closed loop fluid interchange system interconnects the valve actuator stem area of the valve mechanism with the pressure balancing stem area and functions to accomodate volumetric changes to prevent the development of a hydraulic lock that might otherwise prevent or retard opening and closing movement of the valve mechanism. Internal back-face seating arrangements with combination metal-to-metal and elastomeric sealing elements establish seals between the valve stem and bonnet at one gate position and between the pressure balancing stem and valve body structure at the opposite gate position. An externally threaded portion of the valve bonnet is receivable within internally threaded receiver openings of a plurality of different actuator systems, including manual, mechanical, hydraulic and pneumatic actuator systems. The actuator systems are field interchangeable with the valve in service and under pressure.

Abstract: A butterfly valve is provided having a disc with a hub. The disc is adapted to be rotated between an open and closed position. A housing has a valve seat that is adapted to engage the disc in the closed position. A shaft has one end affixed to the hub and extends outwardly of the housing to permit torque to be transmitted to the disc from a point external thereof. A seal is provided for preventing fluid from passing between the shaft and the housing. A bearing supports the shaft in the housing at a point where the shaft extends outwardly over the housing. A retaining ring frictionally engages the shaft and abuts the bearing to insure that fluid leaking along the shaft does not eject the bearing and cause injury.

Abstract: A ball valve assembly in which the ball and valve seats are readily removable from the valve housing, the valve being designed for a high temperature environment. The valve seats cooperate with seat supports and the ball, each of two valve seats comprising a single integral annular fluid-tight metallic spring member disposed between each seat support and the ball. Each metallic spring member comprises a cylindrical bellows length of one or more convolutions, with special ends that are finished in the shape of an internal spherical surface, the same as that of the ball and also that of the inner ends of the seat supports. Ready removal of the ball and valve seats is provided through an opening concentric with the axis of rotation of the ball stem. A flange is disposed in the opening and an annular portion thereof is held in abutting engagement with an annular portion of the valve body.

Abstract: The invention pertains to a valve for fluid and gaseous materials consisting of a valve housing which at one end has a first port with a controllable closure member which is connected to a second port, said valve having at its other end control organs for the closure member.

Abstract: A control valve, the internal wetted working parts of which are made of corrosion resistant material and which are completely enclosed by and easily removable from a steel or stainless steel pressure vessel, and which is capable of tight shut-off and which is able to offer accurate control of minute flowing quantities.

Abstract: A fluid flow controlling butterfly valve assembly is disclosed which comprises a valve body defining a through passage for fluid, a butterfly valving member supported within the body, a shaft extending transversely through the passage and drivingly connected to the valving member, and a shaft supporting structure rotatably supporting the shaft in the body while sealing against leakage from the valve.In a preferred embodiment the shaft supporting structure includes a band extending about the body and defining recesses aligned with shaft portions emerging from the body. Resilient flexible elements are disposed within the recesses and compressively engage the shaft and body to provide both bearings and seals.

Abstract: A valve especially suitable as a relatively cheaply manufactured means for controlling liquids in laboratory equipment, comprises a body having a valve seat with a flow passage passing through the seat, and a spindle located within the body; the spindle comprising a mandrel having an annular groove, a resilient annulus located in the annular groove, and an inert sheath fitted closely over the surface of an end portion of the mandrel and overlying the resilient annulus, the sheath having a closed end shaped to engage the seat for occlusion thereof and having overlying the resilient annulus an annular sealing portion standing proud of the surface of the rest of the sheath, the annular sealing portion being biased against the surrounding body to form a sliding gland seal. The sheath may be preformed or moulded in situ, and protects the mandrel and resilient annulus from attack by fluids flowing through the valve.

Abstract: A valve stem seal for an intake or exhaust valve in an internal combustion engine where the seal allows a metered amount of oil to run down the valve stem for lubrication of the stem in its valve guide. The seal is formed of a relatively rigid valve seal body having a cylindrical wall or skirt engaging the valve guide boss and an upper radially inwardly offset cylindrical wall of a smaller diameter with a radially inwardly extending flange having metering grooves on the upper and lower surfaces thereof, and a resilient insert or collar is positioned on the flange to sealingly engage the reciprocating valve stem; the motion of the collar during reciprocation of the valve stem providing a pumping action through the metering grooves.

Abstract: In a valve for controlling fluid flow, the spindle comprises a flexible polymeric sheath, preferably PTFE, around the end of a stem, the sheath having a tubular portion suspended clear of the stem and having an oversize external ridge which is accommodated within the bore by flexing of the tubular portion, resistance to this flexing serving to bias the external ridge against the surrounding body to provide a gland seal.

Abstract: Cocks having rotating manipulation spindles, comprising a body in which there is rotatably mounted a shut-off member connected by a spindle to a manipulation member, wherein the body of the cock has around the orifice of the bore in which the manipulation spindle is engaged a planar support surface defined at either side of the orifice by two parallel edges of a shape corresponding to that of the edges of a locking member of the spindle having a planar surface bearing against the said planar surface of the body and against a shoulder of the manipulation spindle which is flush with the planar surface of the body, the said locking member having a notch whereby the manipulation spindle is engaged. The invention is also concerned with a method of mounting the locking member of said cocks.

Abstract: A fluid flow controlling butterfly valve assembly is disclosed which comprises a valve body defining a through passage for fluid, a butterfly valving member supported within the body, a shaft extending transversely through the passage and drivingly connected to the valving member, and a shaft supporting structure rotatably supporting the shaft in the body while sealing against leakage from the valve.In a preferred embodiment the shaft supporting structure includes a band extending about the body and defining recesses aligned with shaft portions emerging from the body. Resilient flexible elements are disposed within the recesses and compressively engage the shaft and body to provide both bearings and seals.

Abstract: A plug or ball valve is disclosed having a housing and plug or ball in the housing for controlling the flow of fluid therethrough. A valve stem extends through the housing for rotation of the plug. The valve stem has a narrow peripheral shoulder which is held tightly against the housing by fluid pressure on the plug to prevent leakage past the seal when the valve is in a partially open position.

Abstract: A valve comprises a casing having a passageway therethrough for the flow of fluid with a bore intersecting the passageway. A flow regulating member is rotatably mounted in the bore for blocking the passageway in a valve closed position of the flow regulating member. The flow regulating member has a port therethrough for connecting and being in communication with the passageway in a valve open position. The flow regulating member and the casing define a first chamber at one end of the flow regulating member. A stem is rotatably mounted within the casing and is mechanically coupled to the flow regulating member to rotatably drive the flow regulating member within the casing. The stem has an annular rim formed toward and positioned within the first chamber. At least one annular seal surrounds the stem to effect the seal between the stem and the casing.

Abstract: A globe type Y-pattern diaphragm valve for high pressure, high temperature service affording increased diaphragm cycle life, enhanced flow coefficient and features of decreased construction cost. Comprising the diaphragm in one embodiment is a resiliently supported multi-layer cartridge formed of superimposed layers of different metals having different moduli of elasticity with the upper layers being radially slotted to redistribute encountered stress loads. In an alternate embodiment the multi-layer diaphragm cartridge is comprised of superimposed layers of like composition but of varying relative thicknesses and supported to afford a controlled flexure. An auxiliary porting in the discharge passage adjacent the valve head in combination with a downstream tapered and faired beltway effects a more nearly streamlined flow path to increase the flow coefficient rating of the valve.

Abstract: A floating secondary stem seal arrangement for fluid control devices which becomes operative only when fluid by-passes the primary stem seal. A secondary stem seal member is disposed outwardly along the stem from the primary seal in a secondary seal member receiving chamber. The cooperative configuration of the chamber, the secondary seal member and the stem is such that under normal operating conditions with no fluid by-passing the primary seal, the secondary seal will not perform any sealing function against the stem. Fluid by-passing the primary seal moves the secondary seal member within the secondary seal chamber axially of the stem and into a forced sealing position therewith. This selective operation of the secondary seal assures that it will be essentially free from wear during normal operating conditions and, therefore, effective for sealing purposes in the event of primary seal failure.

Abstract: In a rotary valve, such as a plug valve having a body cavity opening from the top, a top seal assembly includes a membrane of polytetrafluoroethelene or the like which extends over the cavity opening with its outer edges clamped between the valve body and a top closure. A groove around the opening accommodates cold flow of material from between the clamped surfaces beyond it. A circular opening in the membrane embraces and seals around the valve stem and an underturned lip around the opening engages against a generally horizontal sealing surface around the plug stem to be urged into sealing engagement by a load ring, providing a second, pressure augmented annular seal.

Abstract: The stuffing box chamber in a fitting, particularly a valve, contains a deformable stuffing box seal. The seal includes conventional sealing material and a constituent material such as zinc or aluminum having a standard potential that is less positive in the electrochemical potential series than the potential of the material defining the stuffing box chamber, i.e., the constituent material is less precious. Dust, granules or filaments of less precious material are mixed with the standard sealing material. Another embodiment includes alternating layers of discs made from the conventional and less precious materials. A further embodiment provides that the less precious material is an envelope or coating surrounding the conventional sealing material.

Abstract: A non-rising valve stem is provided with a shoulder that, in normal opening and closing of the valve, remains free of a complementary seat formed inside the valve bonnet. Should the valve stem packing in the bonnet begin to leak while the valve is open and under pressure, the bonnet packing gland may be backed out a few turns to effect a seal between the shoulder and seat. Then a disassembly, packing change, reassembly and testing may be effected.

Abstract: A union bonnet valve wherein the valve body is provided with a female threaded recess for receiving an inverted union bonnet nut securing the bonnet of the valve in the valve body. At the inner end of the threaded recess, the valve body is provided with an outwardly facing sealing shoulder and the bonnet is provided with a complementary inwardly facing shoulder secured in sealing engagement with the body shoulder by the bonnet nut. The valve further includes a stem extending outwardly through the bonnet and a sealing structure at the outer end of the bonnet for movably sealing the stem to the bonnet while yet permitting facilitated servicing of the sealing structure when desired. The metal-to-metal seal of the bonnet to the valve body shoulder provides a high pressure seal.

Abstract: The present invention relates to a new and useful adjustable packing assembly for a flat, slide-valve control member which comprises: a rectangular housing which supports a plurality of packing members in abutting contact with the flat control member; a plurality of stationary wedge members having a flat surface for abutment with the packing members and further having a surface including a plurality of interconnected, tapered steps; and at least one movable wedge member which includes a surface of a shape similar to and abutting the stepped surface of the stationary wedges, whereby movement of the movable wedges forces the stationary wedges to compress the packing members against the control member.

Abstract: A packing assembly is arranged between a gate valve stem connected to an actuator and a bonnet secured to the valve body. An externally threaded packing sleeve is threaded within the bonnet and has the packing assembly removably connected thereto for movement with the sleeve. The packing sleeve has an outer end portion which extends into an easily disassembled actuator body where it is easily accessible to a removal tool for replacing the packing. The valve stem has a beveled shoulder thereon which engages a flexible inner flange on the bonnet in the closed position of the gate valve to provide a tight metal-to-metal surface contact between the shoulder and flange.

Abstract: A valve comprising a substantially cylindrical housing, a substantially annular cylindrical resilient valve seating member in said housing, said seating member having an inner surface and an outer surface, a butterfly valve having an outer periphery, a shaft extending through the housing and the seating member for mounting the butterfly valve for movement between a first position wherein its outer periphery is in engagement with the inner surface of the seating member and an open position wherein the outer periphery of the valve is spaced from the inner surface, an annular chamber between the outer surface of the valve seating member and the housing, a plurality of apertures in the valve seating member upstream of the butterfly valve for permitting pressurized fluid to enter the chamber to thereby tend to move the resilient valve seating member radially inwardly into engagement with the outer periphery of the butterfly valve when the latter is in a closed position.

Abstract: A gate valve operator having dual pistons, one having pilot pressure acting thereagainst thereby tending to open the valve, and one having line pressure acting thereagainst tending to close the valve. The line pressure piston's pressure surface area may be varied to compensate for wells having depleted pressure, and line pressure at all times tends to close the valve, i.e., the actuator is unbalanced.

Abstract: External and internal leakage of line media from a plug valve is prevented by the continuous application of a buffering media at all potential leak paths at pressure greater than the pressure of the line media.

Abstract: A high pressure valve of the type employing a non-rotating valve needle having a tapered tip which may be selectively moved between seated and unseated positions relative to a valve seat in a valve chamber. The valve seat is tapered inwardly and has a smaller taper angle than the valve needle. A valve actuating stem is received through a valve packing nut with the actuating stem having a bifurcated inner end defined by a transverse, generally rectangular bore intersected by an axially directed slot. The slot is somewhat smaller in breadth than the width of the bore and extends between the bore and the innermost end of the stem. The valve needle includes an enlarged cylindrical or spherical connecting end adapted to be received in the actuating stem bore and slot. Sealing for the needle is provided by a sealing medium comprised of a combination of a seal member received between a pair of seal washers in an enlarged coaxial area at one end of the valve chamber.

Abstract: A radiator valve has a housing carrying a valve stem with plate and loading spring on the valve stem above the valve plate; a first seal bears against the valve stem between the valve plate and the spring. A presetting member is located in the housing and it carries a second seal bearing against the valve stem at a position removed from the valve plate with respect to the first seal.

Abstract: A method of making a sealing member and a sealing member made by the method, for association with a bore in a barrel member comprises cutting into and rolling a thin layer from a rod of circular cross-section, preferably made of P.T.F.E., leaving the rolled layer integral with the support, forming an annular groove in the support for an elastomeric sealing ring, unrolling the rolled layer so as to form a sheath which covers the ring and so as to leave a rolled portion of the sheath on one side of the ring which forms a resilient annular bulge in the sheath, and compressing the rolled portion whereby the sealing ring is sealed on both its sides by the sheath.

Abstract: The pressure exerted by an elongated rectangular gland packing on an associated flat slide valve within a valve housing is adjusted by means of an elongated adjustment member disposed within said housing adjacent the face of the packing remote from the slide valve. The adjustment member includes a plurality of parallel, inclined slots respectively having fixed support rods extending therethrough. When the adjustment member is moved in the direction of its elongation by manipulation of an actuator from the exterior of the housing, the rods and inclined slots also cause the adjustment member to move in a transverse direction toward and away from the packing.

Abstract: A seal for a drive journal of a ball valve. The elements which directly carry out the sealing action are arranged below a thrust collar which is directed against the cover of the ball valve and is displaceable in the axial direction with the aid of set screws which extend through the cover. The sealing ring is a U-ring which abuts the thrust collar and the walls of the drive journal and the housing. The U-ring is provided with an annular slot which is open toward a thrust ring and, at its deepest portion, has a metallic compensating ring followed by a spiral ring.The present invention relates to a seal for a drive journal of a ball valve, according to which the elements which directly carry out the sealing action are arranged below a thrust collar which is directed against the cover of the ball valve and is displaceable in the axial direction with the aid of set screws which extend through the cover.

Abstract: A stopcock with a plug which is rotary and adjustable in the housing. A fixedly mounted liner of flexible material with a smooth sliding surface is mounted in a rotary manner at a bottom part of the housing. A packing disk is clamped between inside and outside edges in the working area of a shank and projects to the outside. A gasket is located in a cylindrical annular space formed between the shank and a wall fixed to the housing. The reset force of a reset member projecting into the annular space, acts via the gasket and the packing disk on the stopcock bottom part for resetting in its conical seat in the liner. The gasket is enclosed on all sides and is supported by the packing disk by means of a pressure-proof prop ring having reset play restricted by a fixed stop on the housing. Between the gasket and the reset member, is a thrust ring tightly fitted to the wall fixed to the housing, and is centered on the stopcock shaft between the gasket and the prop ring.

Abstract: A flow control valve for hot pitch or other viscous material, wherein a valve rod is guided by a guide member which has radial indentations in its center aperture to define a number of narrow axial ridges around the circumference of the valve rod to provide stabilized guidance by linear sliding contact with the valve rod.

Abstract: A novel self-tightening seal arrangement for a gate valve, parallel valve or the like. A stuffing box chamber containing sealing material is located within the valve head, which takes advantage of the internal pressure of the valve for improved sealing. A sleeve is provided upon the valve spindle and moves upwardly with the valve blocking element as the latter is raised to open the valve, continued raising of the blocking element forcing the sleeve to engage and compress the sealing material in the stuffing box chamber. Locking means are provided to prevent the sleeve from withdrawing as the valve is closed by lowering the blocking element, and the compression upon the sealing material is thus maintained. By fully raising the blocking element after the normal opening function of the valve and thus periodically increasing the compression upon the sealing material, the normal tendency of the material to lose its normal resiliency and sealing effect can be compensated for in a simple and effective manner.

Abstract: A ball valve where a housing with inlet and outlet ports encompasses a ported gate having spherical surfaces and mounted for rotation about an axis perpendicular to one of the ports. A linear spring assembly seals the ported gate and includes a structure supported seal ring contoured to mate with the spherical surface of the gate and mounted by means of an elastomeric cylindrical element responsive to pressure in the housing to control the contact force between the ported gate and the sealing ring, and with an elastomeric seal ring concentric to the axis of rotation.

Abstract: A full flow bypass valve comprising mutually telescoping inner mandrel and outer housing members with hydraulic impedance means therebetween to provide a predetermined time delay when the members are relatively telescoped in a first direction and to provide substantially unrestricted relative telescoping movement between the members in the opposite direction. A valve mechanism provides simultaneous closure of bypass ports through the wall of the housing member when the mandrel and housing members reach full telescopic contraction. Pressure responsive means are provided for maintaining the bypass valve in a closed position regardless of internal or external pressures applied thereto.

Abstract: There is disclosed a valve having means for providing a secondary stem seal in the event the primary packing for the stem is destroyed by heat.

Abstract: An improved relief valve of the type responsive to a predetermined thermal and/or pressure condition. The valve includes a valve body having an inlet, an outlet, an internal passage interconnecting the two, a valve seat about the passage and an opening coaxial with the valve seat, a poppet valve within the body, including a stem extending towards the opening and having a pressure responsive surface directed toward the inlet side of the valve seat, a closure disposed within the opening and having a central aperture slidably and sealingly receiving the stem, the closure being formed of a thin, relatively ductile material and having an outwardly extending lip frictionally captured by the body about the opening and sealingly engaging the body thereabout, the closure further including an annular convex ridge inwardly of the lip and within the body and a central pedestal directed oppositely of the ridge.

Abstract: This invention relates to a shut-off valve type oil extractor that can be screwed into an oil pan in a vehicle engine or the like, and more particularly it relates to an oil extractor of the said type which is characterized particularly in that it is locked in a shut-off state so that it won't be inadvertently opened by mechanical vibration caused during running of the vehicle.

Abstract: A reciprocating valve is formed with a valve stem extending through a packing box which includes an outwardly facing conical surface disposed about the valve stem. The conical surface terminates in a knife-like edge which functions to remove accumulations of foreign material from exposed portions of the valve stem. As the stem moves into the packing box, a non-metallic liner is disposed between the packing box and the valve stem for positioning the knife-like edge in close proximity to and concentric with the valve stem.

Abstract: An exhaust brake valve assembly structurally arranged to provide reliable operation with relatively quick response. The assembly includes a sliding gate valve member driven by a power actuator through a lost motion connection which generates a desirable impact force on the gate to overcome static frictional forces. The lost motion connection cooperates with a relief port in the gate to relieve peak pressure forces on the gate just prior to opening movement to additionally improve opening reliability and response. Still further, the actuator includes a spring return arrangement in which the force rate adjacent the closed gate position is substantially greater than the force rate at the open position so that adequate reserve return force is developed for opening while only a minimal spring force resists piston movement in the initial opening movement.

Abstract: A selectively biased seal for a gate, which gate is translatable within a one piece liner of a gate valve, is disclosed. Lever means for operating the gate and oriented with or normal to the direction of flow through the gate valve are also described.

Abstract: The specification and drawings show a ball valve including a housing defining a valve chamber with inlet and outlet passages connected to the chamber. A ball having at least one throughflow aperture is positioned within the chamber and arranged for selective rotation by a cylindrical stem which extends from the chamber. Resilient, resinous material substantially fills the chamber and sealingly engages the outer surface of the ball and the inner walls of the chamber. Packing means are disposed about the stem and include a relatively rigid first gland member closely and slidably received in the housing and having an opening through which the stem extends. A first surface of the gland is engaged with the resinous material in the chamber. A recess is formed in the gland member about the inside of the opening. Preferably, the recess has a substantial length axially of the stem.

Abstract: A butterfly valve comprises a valve disc mounted on and rotatable with a shaft disposed across the inner diameter of a cylindrical valve casing, said shaft being rotatably supported at each end by a bearing within the valve casing. Fluid flow through the valve casing is controlled by rotating the valve disc from a fully open position through a fully closed position. A shaft seal and bearing is disclosed which prevents leakage of the controlled fluid out of the valve casing axially along the valve disc shaft even under conditions of shaft flexure. Moreover, the shaft seals adjust to the shaft flexure to obviate binding between the shaft and shaft seals.

Abstract: A fluid cat cracker process and apparatus including at least one shutoff valve having improved valve stem guide apparatus. The valve stem guide apparatus comprises a guide member adapted to be attached within the valve body through which the valve stem is disposed. A plurality of annular grooves positioned one above the other are provided in the interior of the guide member and a plurality of expansible seal rings are disposed in the grooves. The seal rings are of a size and shape such that a seal is provided between the valve stem and the surfaces of the grooves whereby pressurized materials within the valve body are prevented from flowing through the valve stem guide apparatus.

Abstract: At least part of a packing which is compressed between two components of a closure device such as a cock or valve is cut from a sheet of carbonaceous material formed by the association of carbon fibers with expanded graphite and compacted at least to a partial extent by compression in a direction which is transverse to the plane of the sheet.

Abstract: Apparatus .?.and method.!. for sealing a shaft extending between a high-pressure region and a low-pressure region so that the seal life is long, and so that stem torque as a result of the sealing is kept to a minimum. A plurality of sealing elements are provided and arranged so that the differential pressure across any one sealing element is only a fraction of the pressure differential between the high-pressure and the low-pressure regions. Flowable plastic or the like under selected pressures is injected and maintained between adjacent sealing elements.