Abstract: A control valve for a fuel injector, especially of an air-compressing, spontaneous-ignition, internal combustion engine. The control valve includes a valve body in the form of a piston valve which is axially movable in a housing chamber into a closure position and an open position, with the closure position being determined by a valve seat on the housing, and a seating surface edge on the piston valve. The housing chamber includes at least one high pressure connection, and a low pressure connection. The basic problem with a control valve of this general type is that when the piston valve strikes the valve seat, rebound movements are carried out by the piston valve, so that the closure position can only be reliably assumed after a certain time delay, thus negatively influencing the injection process.

Abstract: The present invention relates to a fluid jet printing device A to U having an inlet 14, an outlet nozzle 13 and a valve 3, 5 located between the inlet and the outlet. The valve comprises a movable actuation member 3 cooperating with a valve seat.For enhancing the drop generation frequency, a diaphragm-like partition wall PW is arranged between the inlet and the outlet. Said partition wall includes the valve seat VS.

Abstract: An inertia valve includes a valve member which is free to move axially in a cylindrical bore and a valve seat which may be closed by the valve member is provided at one end of the cylindrical bore, said valve seat being supported on a support member so that it surrounds a port defined by the support member, the seat being spaced from the support member at its inner periphery so that it provides a flexible inner peripheral portion which may be deformed by the valve member.

Abstract: This internal combustion engine cylinder head includes a main portion made substantially from aluminum alloy and having a valve port which has a circumferential valve seat surface for cooperation with a poppet valve to open and close communication through the valve port. A cladding layer is formed of copper alloy claddingly laid upon this valve seat surface, and an intermediate alloy layer is present between the copper alloy cladding layer and the main cylinder head portion, this intermediate alloy layer being composed essentially of an alloy between the aluminum alloy of the main cylinder head portion and the copper alloy of the cladding layer. Thereby, the anti-wear properties of the valve seat are desirably improved without making the fabrication process unduly troublesome or costly. The proportion of aluminum diffused into the copper alloy cladding layer from the main portion of the cylinder head should preferably be not more than about 15%.

Abstract: A sealing system for a valve disposed downhole in a subterranean well and subject to a high-temperature and high-pressure environment, comprises an annular valve seat defining a primary annular metallic seating surface surrounded by a groove within which is mounted a nonresilient, nonmetallic sealing element which is spring urged to project axially beyond the end of the primary sealing surface. The valve head is provided by a primary metallic sealing surface which, as the valve head moves toward engagement with the valve seat first engages the nonresilient, nonmetallic sealing element and deflects same axially and concurrently expands it radially outwardly so that the nonmetallic, nonresilient sealing element ends up engaging a cylindrical surface surrounding the primary sealing surface formed on the valve head.

Abstract: In a formation testing apparatus lowered into a well to conduct various tests, an internal hydraulic powered system operates various components. In the present disclosure, an improved valve having metal seats overlayed with an elastomeric material cooperates with valve elements to thereby enhance low power for valve operations. The valve element and mating valve seat cooperate on valve opening or closing to reduce valve power requirements and the forces needed for operation.

Abstract: A ball valve includes a ball member with a flow passage therethrough, annular recessed surfaces around the ends of the ball member flow passages, resilient seals accommodated in part within the recessed surfaces, and a flow passage member, typically the housing, having annular grooves for accommodating the seals. The flow passage of the ball member, the inside perimeter of the seals, and the flow passage of the flow passage member are of substantially the same dimension. The seals each includes a cleft that opens to its inside perimeter for allowing seal flexing without axial movement when the ball member is rotated closed and the seals are flexed out of their respective recessed surfaces. A two-section mandrel having suitable retractable fingers is used to pre-load the seals when joined together through the ball member passage. The mandrel is sized so that the flow passage member is made in an injection mold around the mandrel, ball member and seals.

Abstract: A process for the production of valve seat rings by powder metallurgy wherein molybdenum disulfide in the range of about 0.5% to 1.5% by weight is added to a powder mixture containing 0.8% to 1.5% by weight graphite, 1.0% to 4% by weight lead, 0.5% to 5% by weight nickel, 1.2% to 1.8% by weight molybdenum, 9.6% to 14.4% by weight cobalt, and the remainder iron. The resulting powder mixture is pressed into valve seat rings at a pressing force between 40 and 60 and preferably 50 KN/cm.sup.2. The rings are then sintered in a neutral atmosphere at a temperature of 1100.degree. C. to 1200.degree. C., finally compressed at a pressing force above 120 KN/cm.sup.2 and heat-treated if required. The resulting valve seat rings have greatly improved wear properties when used in internal combustion engines using lead-free gasoline.

Abstract: A light metal cylinder head comprises a cast block and an annular valve seat insert formed from a heat-resisting sheet metal by pressing. The valve seat insert is embedded in the block by casting the block around the valve seat insert.

Abstract: A process for the manufacture of a solenoid operated valve of the double valve seat type ensures that the stroke distance of a ball valve between two valve seats is accurately provided. The ball valve is positioned on a portion of a first valve seat member, and a first jig is mounted on the ball valve. The jig is pressed until an end surface thereof and an abutting surface of the first valve seat member are contacted, thereby forming a first valve seat. The ball valve then is positioned on a portion of the second valve seat member, and a second jig is pressed toward the ball valve until an end surface of the second jig abuts an abutting surface of the second valve seat member, thereby forming a second valve seat. The abutting surfaces of the two valve seat members are abutted, and the two valve seat members are assembled.

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 valve-seat insert for internal combustion engines comprises a double layered, sintered alloy composed of a valve-seat layer on which a valve is seated, and a base layer integrated with the valve-seat layer and adapted to be seated in a cylinder head of an engine. The valve-seat layer is composed of a sintered alloy of a high heat resistance and a high wear resistance having a composition comprising, by weight, 4 to 8% Co, 0.6 to 1.6% Cr, 4 to 8% Mo, 1 to 3% Ni, 0.3 to 1.5% C, 0.2 to 0.6% Ca, and the balance being substantially Fe, the additives, Co, Cr and Mo being present mainly in a form of a Co-Cr-Mo hard alloy and a hard Fe-Mo alloy dispersed in the Fe matrix. The base layer is composed of a sintered alloy of a higher heat resistance and a higher wear resistance than those of the valve-seat layer and having a composition comprising, by weight, 11 to 15% Cr, 0.4 to 2.0% Mo, 0.05 to 0.3% C, balance substantially Fe.

Abstract: A poppet-type check valve utilizing an integral detachable flow control assembly for insertion into a cooperating housing. The checking poppet is oriented with its actuating stem, concentric guide, and concentric force bias spring downstream of the check flow controlled orifice. In a preferred embodiment, the flow control assembly is located internal of a housing having a first flow length adjacent the controlled flow orifice and seat, and a second converging flow length abutting said first flow length, and a terminating flow outlet adjacent the valve outlet port. When mounted internal of the preferred housing, the valve poppet assembly lies partially within the first flow area and extends a predetermined distance into the converging section, thereby greatly reducing turbulence and having a demonstrated reduction in medium flow pressure drop over presently used units.

Abstract: A solenoid valve includes a body (2,25) with an internal intake pipe (26) and an internal outlet pipe (27), a coil (4) and a movable stem (3), urged by a spring (10) toward a valve closed position. The stem (3) defines, with a seat (30), an annular sealing surface (22), surrounded by a groove (17) and by an annular flange (18). The flange defines with an annular counterpart (25) placed opposite, an annular damping surface (23). The groove (17) communicates with the outlet pipe (27) through a longitudinal slot (12) provided in the stem (3). The annular flange (18) is in a position near or in contact with the counterpart (25) when the valve is closed. During a closing of the valve, the liquid between the annular flange (18) and the counterpart (25) escapes radially through the groove (17) from the annular damping surface. This produces a braking effect on the stem (3), to reduce wear on the annular sealing surface (22).

Abstract: A valve seat for ball valves comprises a ring-shaped or annular body fabricated of sintered metal particles having interparticulate spaces which are substantially completely filled with graphite. The seat is fabricated by pumping a dispersion of colloidal graphite in a liquid carrier through the matrix of a preformed ring-shaped sintered metal body, thereafter heating the body to drive off any portion of the liquid carrier which remains in the interparticulate spaces of the body, and then coining the body to collapse any voids which remain in the body and to mechanically bind into the body the graphite which has been trapped in said interparticulate spaces during the pumping step.

Abstract: A multi-port valve comprises a valve seat skeleton and a valve body of readily castible material cast about the skeleton. The valve seat skeleton comprises a plurality of wear-resistant members each having a wear-resistant operative surface formed thereon. The wear-resistant members are secured to one another to retain the wear-resistant operative surfaces thereof in a predetermined fixed arrangement. The valve body has a plurality of valve passages formed therein, one for each valve port, at least one of said passages opening to expose each wear-resistant operative surface for engagement by a movable valve component mounted in each valve passage to bear against and move relative to each wear-resistant operative surface in use. The valve is manufactured securing a plurality of wear-resistant members to one another to form a valve seat skeleton on which the wear-resistant operative surfaces are arranged in a predetermined fixed relationship, and casting the valve body about said skeleton.

Abstract: A composite valve seat has a valve spot surface zone made of a second sintered alloy which is a special sintered alloy and the remainder of the valve seat is made of a first sintered alloy which is an ordinary low-alloyed sintered alloy. A boundary between the first and second sintered alloys describes a curve which is, with the valve spot surface oriented upward, highest at an outer peripheral surface of the valve seat. The curved boundary gradually falls toward an inner peripheral surface of the valve seat and the shape of the curved boundary is similar to the powder rest curve of the first sintered alloy.

Abstract: A flow control valve, especially for use in controlling the operation of a steam turbine, includes a valve seat arranged in the interior of a valve housing, and a diffusor arranged downstream of the valve seat, as well as a valve member which is mounted in a valve member guide toward and away from the valve seat to accordingly throttle the flow of steam or a similar medium through the interior of the valve housing and into the diffusing channel of the diffusor. Minimization of alternating forces tending to excite the valve member into oscillating and stabilization of the flow of the medium in the channel disposed downstream of the valve seat are achieved by the provision of internal ribs within such a channel. At least three such ribs are provided, projecting at least substantially in the respective radial directions or parallel thereto from the surface bounding such channel.

Abstract: A sintered alloy for a valve seat comprising, in weight percent, 0.5 to 1.7% C, 0.5 to 2.5% Ni, 3.0 to 8.0% Cr, 0.1 to 0.9% Mo, 1.0 to 3.8% W and 4.5 to 8.5% Co, the balance being substantially Fe provided by a base atomized powder; said alloy containing 8 to 14% by volume of 250 mesh or less C-Cr-W-Co-Fe and Fe-Mo hard grains and 6 to 13% by volume of cells, with the continuous cells being infiltrated by a copper alloy.

Abstract: The present invention relates to a dual-layer sintered valve seat ring having high stiffness and strength. The features of such ring are: fusion infiltration of Cu into the pores of a ferrous sintered body; hard alloy particles dispersed in the matrix of the valve seat body; the composition of the base and the ferrous sintered body; high density; and, diffusion of an alloying element of the hard particles around them and into the matrix.

Abstract: The disclosure embraces a fuel feed and charge forming apparatus wherein the apparatus is of comparatively small size particularly for use with chain saws and other motor driven tools to effect the reduction in weight. The charge forming apparatus embodies a body construction providing external support members to resist creep and bolt-torque deformation, as well as providing a heat sink-heat transfer means. A valve seat construction for shape retention is also provided to inhibit fuel metering distortions caused by deformation of valve seats by carburetor body creep.

Abstract: A steam trap including a buoyant float member is equipped with a valve seat assembly which is closed by abutment of the float with a valve seat portion surrounding the flow orifice. The assembly is formed with a float abutment member made of carbide located adjacent the valve seat surface on the outer periphery thereof and located to serve as a contact point for the float member and to define a fulcrum about which the float may pivot when moving into and out of contact with the valve seat surface. The material of the float abutment member ensures a longer service life and a more secure closure of the flow orifice.

Abstract: A sintered metal body, having an annular form suitable for use as a valve seat or seal, is impregnated with an uncured polymeric material such as PTFE which is then cured to partially fill the interparticulate spaces in the sintered metal body. The impregnated body is then subjected to applied pressure which preserves the annular shape of the body while collapsing substantially all voids throughout the body to cause the cured polymeric material within the sintered metal body to completely fill the collapsed interparticulate spaces thereby to render the body nonporous throughout.Inasmuch as the interparticulate spaces are completely filled with cured polymeric material, any increases in temperature of the body which result in an expansion of the polymeric material cause a migration of portions of that material from the interior of the body to the exterior surfaces of the body to lubricate the exterior surfaces.

Abstract: For producing the seat or valve member of a labyrinth valve a number of rings of different diameter are placed one inside the other as a workpiece with their blade-like edges turned in the same direction. The group of rings is then slipped over the middle guide or stem of a jig so that the downwardly turned blade-like edges on the rings come to rest against upwardly directed ring-like blades on the jig. These blades are designed with a form answering to the form of the other valve part with which the workpiece is to be used. The rings in the workpiece are pressed down against the blades for leveling them and are then welded together, for example by electron beam welding.

Abstract: A valve which has a gate of springy sheet material pressing at its peripheral region against an endless valve seat when the valve is in a closed position. The endless valve seat has a seating surface situated in a predetermined plane generally perpendicular to the direction of fluid flow through an opening defined by the endless valve seat. The gate of springy sheet material is of a dished configuration and has a hollow interior directed toward the opening defined by the endless valve seat when the valve is in a closed position. The dished springy sheet material which forms the movable gate of the valve has a central region situated upstream of the plane in which the seating surface is located, when the valve is closed, and a springy endless peripheral region situated in the plane of the seating surface in engagement with the latter when the valve is closed.

Abstract: A device for controlling evaporative emission from an automobile, which device comprises, a casing accommodating fuel gas absorbing agents, a tank port adapted to communicate with a fuel tank of the automobile and having a first check valve for permitting the flow of fuel gas from the fuel tank into the casing, and a purge port adapted to communicate with an internal combustion engine and having a second check valve for permitting the flow of fuel gas from the casing to the engine. Each of the check valves of the first and second check valves comprises a check ball of metal, and a valve seat engaging with the check ball and being made of thin metal plate formed in one body with a reinforcement of plastic.

Abstract: A steam trap has a bimetallic control element provided on the prepressure side and a locking part which is biased by the prepressure in the opening direction and which is actuated by the bimetallic control element. The bimetallic control element is provided with at least one bimetallic snap disk and the valve seat is stroke-movably positioned, whereby the maximum stroke path of the valve seat is only a part of the operating stroke of the locking part.

Abstract: A pressure relief valve has a valve disc with a valve stem extending through a valve opening and an annular sealing washer disposed between the disc and a valve seat about the valve opening operated by a limitedly flexible, spring loaded, longitudinally ribbed, holding element with a conically tapering central aperture through a central hub thereof through which the valve stem extends to dispose an enlarged valve stem head behind a hub shoulder.

Abstract: Valve device of bladder type accumulators consisting of a pressure vessel with a bladder enclosed therein, a valve body is secured in the bottom free end of the bladder and a valve seat is formed in the top inside periphery of a liquid pipe, the opposing faces of said valve body and valve seat are so formed to mate closely to each other that when the bladder expands a part of the bladder will not be caught between the valve body and valve seat, thus it is protected from being damaged.

Abstract: A turbocharged engine system has an internal-combustion engine whose exhaust gases drive a turbine at a speed generally proportional to the exhaust-gas pressure. This turbine in turn drives a supercharger that feeds air to the engine intake at a pressure that is generally proportional to the turbine speed. A bypass valve connected across the turbine is opened above a predetermined engine speed to shunt the exhaust gases around the turbine and thereby prevent excessive supercharging of the engine. The pressure of the engine exhaust gases is, however, decreased steadily and proportionately with increasing engine speed above a predetermined second engine speed to operate the engine with an intake-manifold pressure that is slightly below that at which knocking would occur for increased horsepower output.

Abstract: In a reed valve of the type having a base formed with one or more apertures through which flows a fluid, a shock absorbing seat attached to the upper surface of the base so as to surround the one or more apertures at the inner peripheral edge thereof, and a reed having one end securely fixed to the base, whereby the reed is forced to move to seat on the seat, thereby closing the one or more apertures and to move away therefrom, thereby opening the one or more apertures, at least a portion of the inner peripheral edge of the seat which engages with the free end portion of the reed is spaced outwardly away from the upper edge of the aperture by a suitable distance and is beveled or curved.

Abstract: There is disclosed a seal assembly for sealing between the body of a valve and the closure member thereof, as well as a method for mounting the assembly within an annular groove with the body which surrounds the flowway through one side of the valve. The seal assembly comprises inner and outer seal rings of relatively hard and soft material which are locked within the groove by a resin which has hardened in the groove as the rings are held in predetermined endwise positions therein.

Abstract: This relates to a ball valve of the top entry non-spherical type. A soft metal coating is deposited on that portion of the seat ring which contacts the valve member or ball. The ball and seat assembly is inserted into a valve chamber such that the seat rings are in an unstressed condition. After insertion, the ball is rotated 90.degree. causing the ball to engage the soft metal coating, thereby crushing the soft metal to form a tight seal with the ball. In this manner, the lapping process, generally required when metal seats are employed, is eliminated. Further, the seats may be replaced without replacing the ball.

Abstract: A gas lighter has a hollow cylindrical reservoir formed at one end with a smooth cylindrical well at the bottom of which is formed a hole opening into the interior of the reservoir. A rigid plug is force-fitted into the well and has a pair of sides and a passage extending between the sides. One side compresses a block of porous and compressible material which serves to control the flow of gas out of the hole, and the other side of the plug serves as the seat for a valve body reciprocal in the well. The floor of the well and/or the one side of the plug may be formed with a recess so that the plug may bottom in the well with the block in the recess, thereby compressing this block to an exactly predetermined extent so that gas flow and, hence, flame height is determined exactly.

Abstract: An improved self-actuated constant flow rate regulator system is described which can keep the rate of flow of fluid through a filter or other variable load constant within close limits. One application for this invention is for sampling the air for toxic dusts in factories where it is desirable to draw air through a collecting filter at a pre-set rate regardless of the amount of deposit on the filter and where a number of such filters may be connected to a central vacuum pump. The system comprises a differential pressure regulator and an adjustable metering orifice working in conjunction with each other. The regulator senses the pressure drop across the orifice and governs the flow rate accordingly. Details of the regulator valve and of the metering orifice are set forth which contribute to improved operating performance and manufacturing efficiency.

Abstract: A metallic seat assembly for a gate valve includes an annular seat pocket around the flow passageways to the valve chamber with a metallic annular seat support member rigidly mounted in the seat pocket and a metallic annular seat member movably mounted inside the seat support member and connected thereto by a resilient and flexible annular metallic member. The resilient annular member is secured continuously around its inner and outer perimeters to the seat support member and the seat member respectively and it functions as a spring to bias the seat member toward the gate and as a seal between the seat member and the supporting member. The resilient and flexible member permits axial movement of the seat member relative to the seat support member and also compensates for thermal expansion and contraction of the seat member and the seat support member relative to each other. The metallic seat member has an integral metallic sealing lip extending from an annular groove around the sealing face of the seat member.

Abstract: A control valve for a pulsating rocket engine comprises a valve seat and a movable valve part, one of which has a facing surface, of a non-deformable material, having a plurality of concentrically arranged saw-tooth shaped sealing ridges with flat sealing faces at their apices which extend perpendicular to the movement direction or force application direction. The other valve part has a facing surface of polytetrafluorethylene or polyamide which is initially smooth and plain but which, upon the first closing operation of the valve, responsive to a pressure load thereon exceeding a predetermined pressure load, is irreversibly deformed by the saw-tooth shaped sealing ridges, with flat sealing faces, of the other valve part to form therein grooves complementary to the sealing ridges.

Abstract: A pressure regulator for breathing apparatus, which comprises a valve cooperating with a seat formed by the end of a nozzle which is axially movable inside a cylindrical chamber, said seat being surrounded by a hollow member of revolution having one end open, in which the valve engages.

Abstract: A three port valve construction having a onepiece plastic valve housing body provided with a stepped cylindrical opening through one end thereof that defines a pair of spaced annular shoulders, the body having three ports therein transversely disposed to the opening and respectively intersecting with the opening with one port being located between the shoulders and the other two ports being respectively disposed outboard of the shoulders. One of the shoulders defines a first valve seat and an annular plastic valve seat member is ultrasonically welded to the other of the shoulders to define a second valve seat. An axially movable valve member is slidingly disposed in the opening to control the first and second valve seats.

Abstract: The present invention relates to a method of constructing a valve. The valve comprises a casing with a bore therein for receiving a valve member. The bore also receives a plug which is engageable with the valve member to control communication through an opening on the plug. The method comprises the steps of inserting the valve member in the bore, connecting the plug with the casing such that the valve member is engageable with the plug and welding the plug to the casing while at the same time embedding the valve member into the plug to provide a valve seat on the plug. In particular, the casing and plug are a thermoplastic material, such as Nylon, and the valve member is metallic so that ultrasonic welding softens the plastic to bind the casing to the plug and to deform the plug by engaging the valve member with the softened plug.

Abstract: An improvement in valves for suction or exhaust passages of an internal combustion engine, wherein the projection of the plane of the fixing seat of the valve plate and the plane of the valve seat are not parallel. The fixing seat can be tapered. The valve seat can either have a straight angle taper or a curved face. The angle of difference between the two planes is from 30' to 10.degree., preferably from 1.degree. to 3.degree..

Abstract: Disclosed below is a valve constructed with an electrical circuit extending through separable flow-control elements of the valve whereby the circuit may be opened by actual parting of the separable elements. For specific uses, the valve is characterized by structure permitting instant opening to full flow, high flow capacity, self-opening action, and latching mechanism for locking it in closed position.

Abstract: A universal logic body block includes a number of identical cavities having accompanying passageways of identical number and pattern. Each single cavity forms the basic housing for installation of various components to perform logic functions AND, OR, NOT and TIM. A primary universal insert fitted within the above-described cavities of the universal logic body block in combination with various other valve elements will provide an AND, or NOT logic function. A universal secondary seat may be fitted within a cavity in one manner in combination with other components, to provide the logic functions AND, OR and NOT. Additional specialized inserts are provided for insertion into a cavity of the universal logic body block in combination with various valve elements to provide the TIM logic function or the OR function. Various logic circuits can be formed in one block by means of connections between separate logic devices.

Abstract: A valve comprising a valve body and a valve member, said valve body and valve member having cladded seats of hard metal metallurgically connected thereto, and a method for manufacturing said valve comprising a step of metallurgically connecting said seats to the valve body and the valve member through an explosive cladding process.

Abstract: A diaphragm-type irrigation valve having a molded plastic body, and including a metal valve-seat ring with sidewalls embedded in the plastic body. The seat ring has a generally U-shaped cross-section, at least one ring sidewall being non-parallel to a central axis of the ring. An O-ring seal is positioned within the ring to bear against the plastic material in which the sidewalls are embedded.