Abstract: A recessed seat retainer for a valve is secured in an annular recess on the face of a valve body by a totally internally disposed key system which does not create an external leak path. An annular keyway is formed in the cylindrical sidewall of a seat retainer. A key extends from the cylindrical sidewall of an annular recess formed in an axial face of the valve body. The key is received in the keyway and locks the retainer against axial dislodgement from the valve body.

Abstract: A stem-operated fire-resistant gate valve including an improved metal-to-metal stem backseat fusible ring assemblies for facilitating automatic stem backseating at pre-selected temperatures, spring enhancement of the backseating procedure, and an improved metal-to-metal gate seat.

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 high pressure ball valve including a valve body with inlet and outlet ports, a ball having a passageway therethrough disposed between the ports, and seats between the ball and the ports guidably supporting the ball. Each seat includes a core of polyethersulphone having a ball engaging face with the same radius as the ball, a metal reinforcing ring, and elastomeric seals bonded to the ball engaging face and the face that seats in the valve body.

Abstract: An improved valve-strainer body or housing is disclosed wherein a single structure is adapted for use as both a valve housing for globe valves, gate valves, check valves and the like, and also utilized as a casing for a strainer. The housing is sized such that the single housing may be utilized in differing sized pipeline systems from approximately 1/4 inch IPS to 1 inch IPS. The invention also discloses superior means of using the valve body casing in connection with not only threaded pipe systems, but also brazed pipe systems and welded pipe systems. Finally, improvements in the valve assembly structure is also disclosed.

Abstract: A pressure-reducing valve is secured to a proportional magnet by resiliently connecting the valve sleeve of the valve receiving the piston to the housing of the proportional magnet, thus avoiding possible deformations of the valve sleeve resulting from mounting. Furthermore, the operational safety of the valve is improved by abutments limiting the stroke of the valve piston and by a control edge which is additionally provided at the valve sleeve.

Abstract: A valve ring arrangement is disclosed in which the corrosion sensitive parts of shut-off valves, control valves and condensate-removal devices are kept out of contact with condensate accumulations. Also disclosed are float and bucket-type condensate-removal devices which are protected against shutdown corrosion by means of automatically draining them during shutdowns.

Abstract: There is disclosed an expanding gate valve having seats which are press-fitted into annular recesses in the valve body on opposite sides of the gate, each seat including a ring having at least one annular rib on its outer end which is of a harder material than that of the inner end of the recess and embedded therein to form a pressure barrier between the seat and recess.

Abstract: A hydraulic choking device for use in controlling fluid flow from an oil or gas well, having an improved valve chamber and valve design to reduce parts' wear and facilitate repairs, wherein the chamber is provided with a cavity within the chamber passageway sidewall to which the fluids are initially directed and wherein a ball nose plug is utilized as the valve gate to seal the valve.

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: A valve seat structure adapted to be positioned within each annular seat pocket (37, 36) which is formed about the flow passage (12, 13) adjacent the valve chamber on both the upstream and downstream sides of the gate element of a gate valve. The valve seat structure comprises a metallic seat ring (40) which fits snugly within the seat pocket (36, 37) but has an axial dimension which exceeds the depth of the pocket. The seat ring is formed with an annular notch (49, 50) in the outer corner of the ring at its rear face (48) for accommodating a resilient O-ring (66) therein. In its front face (47) the seat ring is provided with an annular groove (51) coaxial with the ring axis and provided with serrated side walls (51a, 51b). A plurality of passages (55) are formed in the ring with equiangular spacing and extend from the face groove (51) to the corner notch (49, 50).

Abstract: In a subsurface positive displacement pump used in the petroleum industry for pumping crudes characterized by a high degree of suspended solid particles, a ball check valve comprising a valve ball and a valve seat assembly wherein the valve seat assembly comprises a hollow cylindrical body defining an orifice through which pumped fluid passes, the hollow cylindrical body being provided with a recess on the surface facing the valve ball in the region defining the orifice wherein an insert which forms the actual valve seat for the ball valve is secured in the recess. The insert is formed of a material having a hardness greater than the hardness of the material from which the valve ball is formed which material in turn is characterized by a hardness greater than that of the hollow cylindrical body.

Abstract: A check valve having a removable seat portion with integral flapper (valving means) is disclosed. The seat portion can be removed through a port in the valve body without breaking any connection of the valve body to the associated fluid flow lines. The seat portion can comprise two sections that secure between them sealing means (e.g., an O-ring) for creating a fluid tight seal when the valving member of the check valve is closed against the seat portion. A fluid tight seal is created between the valve seat portion and valve body by tapers on the valve seat that cam against corresponding recesses of the valve body to force the valve seat portion against the valve body.

Abstract: A pressure regulator system for providing controlled reduction of fluid pressure from a relatively high pressure fluid source to a relatively low regulated fluid pressure output. The pressure regulator includes a pressure reduction regulator designed for stable flow under transonic conditions, and an improved solenoid valve assembly for switching the reduction regulator to an operational condition.

Abstract: A valve has an externally threaded valve seat sleeve being axially slidably received in a cavity of the valve housing. The sleeve has an end face forming a seat for a valve head and is surrounded by a seal assembly which has a sealing ring being in circumferential engagement with the valve seat sleeve and a part of the housing walls; an abutment mounted on the valve seat sleeve for abutting the sealing ring to prevent an axial displacement thereof in one direction relative to the valve seat sleeve; and an internally threaded sleeve surrounding and threadedly engaging the valve seat sleeve. The internally threaded sleeve has an annular part cooperating with the sealing ring. There is further provided a force transmitting arrangement for applying a torque to the internally threaded sleeve in response to a force applied externally of the valve for rotating the internally threaded sleeve with respect to the valve seat sleeve to axially press the internally threaded sleeve against the sealing ring.

Abstract: A hydraulic choking device for use in controlling fluid flow from an oil or gas well comprising choke body assembly and a choke actuator assembly having a choke actuator assembly with improved sealing means and choke plug construction, as well as a unique choke actuator drive means.

Abstract: A valve seat (28) having a generally saddle-shaped, eccentric surface (52); a groove (50) of constant depth and width formed in the eccentric surface, having sidewalls (70) perpendicular to the eccentric surface and a base (72) parallel to the eccentric surface; and a flexible O-ring (54) retained by friction within the groove. The groove sidewalls and base have a surface finish in the range of about 32 to 125, which provides sufficient smoothness to retain the O-ring in the required non-planar shape.The valve seat groove (50) can be produced according to the disclosed method, which is preferably implemented in a numerically controlled four-axis horizontal milling tool system. The valve seat part (100) is mounted in a fixture (102) on a rotary table (104) such that the part axis (56) is aligned with the longitudinal axis (Z) of the tool (106).

Abstract: A multiway slide valve having a housing provided with a graduated cylindrical guide bore, a pressure inlet port, and a pair of pressure outlets ports. A preassembled valve seat unit including a plurality of annular spacers which carry sealing rings having respective diameters corresponding to the graduations of the guide bore so that damage to the sealing rings is prevented when inserted into the graduated cylindrical guide bore. A slide spool and jacket inserted into the guide bore. A cover attached to the housing for depressing the jacket which causes deformation of the sealing rings to provide a tight seal between the graduations of the guide bore and the slide spool.

Abstract: A fluid valve suitable for use in slush pumps is disclosed. The valve includes an elastomeric seal and a metal wear ring held in place on a valve body by a retaining ring. Thrust of the valve body against a valve seat is absorbed by the wear ring which is held against a shoulder on the valve body. The elastomeric seal is held between the valve body and the wear ring. A second seal is disposed between the inside diameter of the wear ring and the valve body to prevent fluid leakage behind the wear ring. The structure of the valve provides for replacement of the wear ring.

Abstract: A ball valve structure (10) having a valve seat assembly (46) positioned in annular seat pockets located in a flow passage (14) on opposed sides of a ball valve member (18). Each valve seat assembly is mounted for limited longitudinal movement toward and away from the adjacent ball valve member (18) and spring means (54) are placed within the seat pockets behind the valve seat assemblies to urge the assemblies toward and into intimate contact with the ball valve member. The valve seat assembly includes inner and outer annular concentric seat rings (48, 50) with a resilient sealing ring (52) secured therebetween. The inner annular seat ring has a flared end (64) which fits inside the outer seat ring and energizes or deforms the sealing ring (52) held therebetween, thereby, securely retaining the sealing ring between the seat rings and preventing the introduction of line pressure behind the sealing ring to possibly extrude the sealing ring from its position within the seat rings.

Abstract: A safety valve formed of a body with a fluid inlet and outlet and a passageway there between having a reduced diameter port providing an internal radial ledge, a cylindrical seat member supported on the internal ledge, the seat member having a circumferential groove in the upper face, the groove having an inner frusto-conical surface tapering inwardly in the upper direction so that the width of the groove is wider at the top than at the bottom, a toroidal elastomeric seal received in the seat member groove, the lower portion of the seal being configured to correspond to the groove with an integral upwardly extending reduced internal diameter lip portion, a cylindrical seat retainer member engaging the upper end of the seat member to retain it in position and simultaneously engaging a portion of the upper surface of the seal to retain it in the groove, and a spring biased ball member positioned above the seat member permitting so that fluid flow through the valve body when the fluid pressure exceeds a pre-sele

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 fluid flow control valve especially adapted for use during well drilling operations as a drilling choke is disclosed. A replaceable ported seat and movable tubular flow control element cooperate to control flow through the angled body valve housing. The flow closure mechanism is operating fluid pressure balanced for ease of valve operation during extreme pressure working conditions. Internal flow control working parts of the valve are rugged in construction and assemblage. The portions of the valve subject to wear or flow erosion are also easily replaced when required. An indicator is arranged to signal incipient failure of the replaceable parts of the valve in order that they may be replaced prior to the occurrence of a major failure.

Abstract: A variable high pressure choke consists of a hollow valve body having a cylindrical cavity with a closed end, an open end and a cover or closure for the open end, and aligned tubular inlet and outlet portions on opposite sides thereof defining a straight bore intersecting the cavity at a right angle thereto. A tubular seal member is positioned in the bore with an end portion movable end-wise into the valve cavity. A flow selector member positioned in the cavity has a solid portion and a portion with flow controlling passages of different sizes; has a sliding fit between an extended position with the solid portion closing off the seal member end portion and successively retracted positions along the seal member to provide fluid flow openings of different sizes through the valve body. An operating stem connected to the flow selector has a threaded connection in the cover whereby rotation of the stem by a hand wheel raises the stem to move the flow selector.

Abstract: A pressure regulator system for providing controlled reduction of fluid pressure from a relatively high pressure fluid source to a relatively low regulated fluid pressure output. The pressure regulator system includes a pressure reduction regulator designed for stable flow under transonic conditions, and an improved solenoid valve assembly for switching the reduction regulator to an operational condition.

Abstract: The packing for elements of a valve subject to reversal of differential pressure includes a pair of spaced packings with a recess there-between connected to atmosphere to eliminate reversal of differential pressure across individual packings of the pairs.

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 high pressure globe and check valve mechanism according to the present invention incorporates a valve body structure having a globe valve type seat removably positioned therein. A globe type valve element is adapted for seating engagement with respect to the removable seat and is positionable within the valve body by means of a valve actuating stem. A connection element establishes a lost-motion connection between the valve element and valve stem and thus allows relative movement between the valve element and valve stem during check valve type operation. The valve stem is also positionable within the valve body structure so as to maintain the valve element in positive seated engagement with respect to the valve seat.

Abstract: A gate valve has a hollow substantially T-shaped housing having opposed tubular ends through which a pair of coaxial sleeves extend, the sleeves terminating in the interior of the housing in a pair of seats. A gate includes a pair of gate members which are movable in the space between the seats to and from closed positions engaging the seats. The gate members are moved by a structure which first displaces the gates transversely to the common axis of the sleeves until the gates are in a position of alignment with the sleeves, and then while the structure which moves the gates continues to operate, a stop engages the gate members to guide them for movement into engagement with the seats. When engaging the stop the gate members move along the common axis of the sleeves. The sleeves serve to protect the housing from the effects of temperature fluctuations of the fluid flowing through the sleeves. In addition the sleeves can readily be removed and replaced as required.

Abstract: This disclosure is directed to a dump valve. In the preferred and illustrated embodiment, the dump valve incorporates a valve operator and comprises a valve body having a side located port for admission of high pressure fluid and an axial outlet. The valve operator powers an elongate push rod which passes through an axial passage in the body and supports a hard metal valve element at the tip which is profiled to fit against a valve seat, blocking flow in the axially located passage. Additionally, it incorporates a second seat which is formed of a shaped inner valve of resilient material. This comprises a second valve element. The two valve elements collectively seal the passage. This is particularly helpful in that a hard trimmed, primary shutoff mechanism is first provided incorporating the hard trimmed valve element and seat, and a second soft trimmed valve element and seat cooperates with it. The hard trim valve must seat first before the rubber plug is expanded.

Abstract: A check valve having a predominantly cylindrical housing, a sealing diaphragm comprising a thin, tubular slip and at one extremity a radially outwardly extending fastening flange, said flange being clamped between an uninterrupted inner shoulder in the housing and an annular locking member of a synthetic resin, having an outer surface being at least partly tapering, said locking member being enclosed between the fastening flange and an inwardly projecting protuberance of the housing, and a rotation symmetrical closing member being axially displaceable between a closing position sealing on the slip and an opened position away from said slip.When assembling the component parts of this check valve the diaphragm is first installed and thereafter the locking member is forced in position by an axial movement only.

Abstract: A ball valve assembly that is solids-proof, corrosion-resistant, will maintain seals even under large pressure differentials, and can operate from cryogenic levels to high temperature ranges. An annular recess is formed in the valve body adjacent the ball, and an annular valve seat of rigid material is disposed in the recess. Facing surfaces of the valve body defining the recess and the valve seat are shaped to define a region therebetween having a larger volume (and cross-sectional area) at the high pressure side thereof than at the low pressure side thereof with the transition therebetween. A solid elastic material annular body, such as a sponge graphite body, is disposed in the recess to positively elastically engage the surfaces along the transition upon application of high pressure to the high pressure side of the region, to bias the valve seat into tight sealing engagement with the ball. The surfaces may be beveled, with an angle of convergence of about 2.degree. to 20.degree.

Abstract: An expanding gate valve having seats (74) which are mechanically secured in place. The valve body has seat pockets which include undercut grooves (78) intersected by a cylindrical body cavity (24) to form a pair of openings (80) to each groove. Each valve seat has a pair of lugs (90) which may be fitted through the openings and into the undercut groove. Subsequent rotation of the seat locks the lugs in the groove to secure the seat in place in its seat pocket. Each seat is able to pivot about an axis extending between the lugs in order to compensate for irregularities in the contact surfaces of the gate or seat.

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 controlled or limited floating seat for an expanding type gate valve. The seat is received in a shrink fit in a groove formed around the flow passage of the valve adjacent the valve chamber. The seat is able to move in the groove toward the valve chamber until a frusto-conical outer side of the seat contacts a frusto-conical outer surface of the groove to prevent the seat from dragging against the gate assembly in the collapsed condition thereof. In the expanded condition of the gate assembly, the seat is bottomed in the groove with a sealing surface of the seat tightly sealing against the gate assembly.

Abstract: A cylinder head for internal combustion engines, especially Diesel engines, with at least one opening for a passage forming an inlet or outlet and leading to a combustion chamber. This opening which is adapted to be closed and opened by a valve is on that side thereof which faces in the direction toward the combustion chamber, provided with a valve seat ring fastened in the opening of the passage. Each valve seat ring is to its major extent conical with the basis of the cone pointing toward the combustion chamber while only that end of the valve seat ring which faces away from the combustion chamber is in a projecting manner fastened to the cylinder head.

Abstract: An oilwell tubing tester for the in-place pressure-testing of oilwell tubing strings for leaks, utilizes a flapper valve, a valve seat, a three-piece sealing mechanism, and a sliding J-mandrel located inside the tester housing in abutting relationship with the flapper valve.

Abstract: A water valve for lavatory, garden and other use having a housing forming a chamber with a fluid inlet in the bottom wall and a fluid outlet port in the side wall has a replaceable seat means on the bottom wall. The valve has a valve means mounted for rotation about the longitudinal axis of the valve, and a cover journalling said valve means is screwed into the top of the valve body. The replaceable seat means is a multi-purpose element, having a planar surface for engagement by the valve means a cylindrical liner for the inlet port, and stop means to limit the travel of the valve means.

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: A non-floating seat structure for an expanding gate valve in which a seat ring is pressed within a body recess and a sealing member is inserted in a groove between a rear face of the seat ring and an opposed wall defining the recess to form a fluid-tight barrier. The groove for the sealing member is of a generally rectangular cross-section and is formed by a counterbore in the valve body and a rearwardly extending inner lip on the seat ring which abuts the recess wall when the seat ring is pressed within the body recess.

Abstract: A cylinder head for internal combustion engines, especially Diesel engines, with at least one opening for a passage forming an inlet or outlet and leading to a combustion chamber. This opening which is adapted to be closed and opened by a valve is on that side thereof which faces in the direction toward the combustion chamber, provided with a valve seat ring fastened in the opening of the passage. Each valve seat ring is to its major extent conical with the basis of the cone pointing toward the combustion chamber while only that end of the valve seat ring which faces away from the combustion chamber is in a projecting manner fastened to the cylinder head.

Abstract: A faucet assembly including a spigot having a passageway therethrough is provided. One end of the spigot is open for exit of fluid and the other end is adapted to be rotatably connected to one end of a stationary fitting. The other end of the fitting is adapted to be removably connected to a fluid source. The fitting has a passageway therethrough. A valve is provided and is operable upon rotation of the spigot to a predetermined angular degree relative to the fitting to open and close a flow path for flow of fluid between the fitting and spigot and consequently between a source of fluid and the open exit end of the spigot. Seals are provided on the fitting and spigot to prevent leakage of fluid in the open and closed positions of the valve and to thereby restrict fluid flow.

Abstract: A valve seat - to - body connection, and an installation therefor. A resilient metallic ring having an inside diameter slightly smaller than the outside diameter of a valve body in which the seat member is to be installed, is placed around the section of the seat member. When the seat member is then inserted in the body, it provides initial sealing pressures, but is still readily detachable. Apparatus is provided for injecting a material of plastic consistency or the like into the area surrounding the metallic ring, which deforms the ring into fluid tight engagement with the seat member and the body. Additional seals may also be provided associated with the seat member.

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 gate valve having a valve body particularly designed and constructed of a "slim" design, or of a minimum overall length whereby the valve may be interposed in a flow line in a minimum of space.

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: A two piece valve sleeve mandrel utilizes replaceable insert seal carriers having peripheral elastomeric sealing areas thereon which may be partially or fully pressure-balanced.

Abstract: An adjustable seat for butterfly valves wherein an annular groove is provided in the valve body for receiving an annular sealing member against one sidewall thereof for sealingly engaging the valve closure member in the closed position of the valve. A plurality of circumferentially spaced inwardly directed lugs are provided on the valve body conterminous with the groove and spaced from the sidewall thereof. A plurality of arcuate seal retainer members are disposed in the groove and interposed between the lugs and the sealing member for retaining the sealing member in a sealing position within the groove. Adjustment members are provided on each lug for selective adjustment of the pressure of the arcuate segments against the sealing member for adjusting the sealing pressure of the sealing member.