Materials

A diverter spout valve mechanism comprises a hollow pressure chamber having an inlet, an outlet on a vertical wall spaced from the inlet, and a vertically movable valve member formed of a moldable plastic or similar light weight material mounted in the outlet. The valve member is movable from an open...     

A safety valve for use in gaseous service at elevated temperatures, including a casing provided with an annular valve seat and a selectively moveable valve member having mounted thereon a plastic annular sealing ring for seating on the valve seat. The plastic annular sealing ring is preferably formed...     

A valve assembly kit permits the assembling of a plurality of different slide valves each having an elongated housing element formed with a main passage, fluid passages communicating with the main passage, and fluid ports which also communicate with the main passage, and an elongated valve spool element...     

A valve comprising a valve body having a chamber therein, a knife-edged valve seat in the chamber, and a knife edge in the chamber substantially circumscribing the valve seat. First and second passages are provided in the valve body leading to the chamber with the first passage terminating in a port...     

A ball valve with an actuator wherein a seal assembly with a combination O-ring swivel and seal for producing a tight seal is hidden in a pocket isolated from the flow of fluid through the valve by an inlet reentrant flange and the valve body. The swivel and other parts of the seal assembly including...     

A valve system with an electromagnetically operated pilot valve for pneumatically actuating an operating piston of a primary valve for accurately metering, controlling and/or dispensing fluid with the primary valve. The piston is connected for pivoting a valve member actuating rod enclosed within a flexible...     

Gate valve having a closure member mounted on a swinging arm pivotally mounted for movement transversely of the axis of the valve openings. A wedge member carried by the arm drives the closure member in a direction parallel to the axis of the openings when moved longitudinally of the arm. An actuator...     

Fluid flow control valves such as plug valves or cocks have the plugs thereof supported and sealed in the valve housing by a rigid but somewhat elastic plastics bearing member which is preloaded and compressed from its free state condition and seeks to reclaim this condition for taking up wear and preventing...     

A fluid pressure operated control apparatus comprising a casing having an inlet and outlet for the flow of fluid under pressure, a diaphragm mounted in the casing having opposite sides thereof responsive respectively to outlet fluid pressure and a regulating pressure and valve means actuated by the diaphragm...     

A dental office system including apparatus particularly adapted to high speed dental equipment. An aspirator operating valve having a coil spring trap catches inlays and crowns and other large pieces while permitting amalgum and other small pieces to pass without clogging the trap. A vacuum/venturi line...     

A stopcock is disclosed which comprises a body suitable for molding, having an axial bore, axially and angularly spaced apart inlet and outlet passageways through the body and intersecting the bore, and a stem rotatably mounted within the bore, the stem having an elongated slot extending radially partially...     

The specification discloses a ball valve comprising a valve body having a ball receiving cavity with aligned inlet and outlet passages leading thereto. Located in the cavity are two ring-shaped seats and a ball rotatably supported in the seats. The ball has an opening formed therethrough. Means is provided...     

A fluid pressure operated valve includes a housing into which fits an expansible membrane. The housing is formed with an input aperture and an output aperture each respectively closable by one of a pair of movable flaps. The membrane is coupled to the fluid pressure the application of which causes the...     

A crank-operated valve is provided wherein the valving member and stem are of deflectable plastic material. Sucn an arrangement permits a corrosion resistant, easily operating valve to be prepared using an imprecise valve body.

A rotary plug valve in which the plug has a special sealing means in its outer surface to contact the wall of the plug chamber in encircling relation to the inlet flow port of the valve body when the plug is in closed position, said sealing means including a generally circular disk having limited inherent...     

A low flow needle valve assembly is described having a non-metallic valve stem guide and a cross-flow system such that fluid flow occurs over only metallic metering surfaces. The valve assembly is particularly advantageous in view of its low cost and its smooth, non-reversing flow characteristics which...     

A butterfly valve comprises a valve body, a valve seat, a valve stem, a valve member and sealing assemblies. The valve seat has three layers such as a first, a second and a third layers which are formed from hard synthetic resin, resilient material and fluororesin respectively. An effective seal can...     

An improved exhaust gas control valve of the type in which a vacuum actuated, valve-closure member controls the flow of exhaust gas into a gas chamber located between an inlet port and an outlet port, wherein the improvement comprises a corrosion-resistant metal liner covering the inside walls of the...     

Gate valve having a closure member mounted on a swinging arm pivotally mounted for movement transversely of the axis of the valve openings. A wedge member carried by the arm drives the closure member in a direction parallel to the axis of the openings when moved longitudinally of the arm. An actuator...     

A butterfly valve includes a housing, a pivotal stem mounted on housing, and a disk mounted on the stem and tiltable within the housing to control the flow rate of a fluid. Means for attaching the stem to the disk includes a keyway defined by one of the stem and the disk, and an associated pin carried...     

A valve assembly including a hollow, generally cylindrical housing having spaced inlet and outlet ports, a generally circular valve member disposed coaxially within the housing between the inlet and outlet ports, and an eccentrically apertured body member disposed coaxially within the housing, and having...     

An improved diaphragm valve, particularly adapted for applications at high pressures and in applications in which low dead volume is required. The valve has a diaphragm which is formed of a halogenated hydrocarbon polymer of a compression strength sufficient to avoid non-recoverable extrusion of the...     

A disposable valve, including a body having a plurality of ports and a core which is telescoped in the body and is rotated therein to provide connections between various ports, is provided with an improved arrangement for rotatably securing the core in the body and for halting its rotation at predetermined...     

An upset-forged poppet valve wherein at least the head portion and a part of the neck is made of a high temperature super alloy while the remaining portion is made of a conventional valve steel, said two materials being connected by friction welding before said valve is forged. The method comprises two...     

A valve for use with high temperature abrasive fluids includes a valve body having an outer shell of metal, such as low carbon steel, a refractory liner attached to the shell comprising an insulating outer layer of relatively low density castable refractory material, such as alumina, an inner layer of...     

An air chuck molded of synthetic resin material having a body with bores therein for the flow of air through the body. A check valve is provided in one of the bores and an end cap is threaded into this one bore to maintain the check valve in its desired position within the bore. This one bore has internal...     

A seal member for a noncompression-type faucet valve comprises a cylindrical member having an open top and an open bottom, both of which are partially closed by inwardly directing flanges. The member is further provided intermediate its length with an external outwardly directed circumferential ridge....     

A valve for controlling the pressure within a tank to prevent excessive above or below atmospheric pressure conditions, including a pressure responsive valve and a vacuum responsive valve, wherein each valve includes a pallet with seals and blowdown rings of polytetrafluorethylene material, which is...     

A pressure reducing valve particularly constructed for use with hot high pressure water by the incorporation therein of a sapphire valve head, seat and head engaging element.

A variable flow air outlet valve is provided, e.g. for admitting conditioned air to an aircraft cockpit, comprising two relatively rotatable parts relative rotation of which progressively varies the length of the path that the air must follow through the valve before reaching the outlet so that the outlet...     

The butterfly valve includes a pair of tailpieces which are threaded onto the outer ends of axially spaced pipe sections of a piping system and have a radially extending flange, a valve unit having a wafer-like body which fits between the tailpieces, and a pair of clamping members, each encircling one...     

A multiple-port valve assembly is designed to direct flow from a primary conduit into any one of a plurality of secondary conduits as well as to direct a reverse flow. The valve includes two mating hemispherical sockets that rotatably receive a spherical valve plug. The valve plug is attached to the...     

Sintered articles characterized by a surface of revolution, such as truncated spherical balls and spherical ball valves, e.g., plain spherical bearing balls, are provided made by the powder metal compaction and sintering of blanks followed, in the case of ball elements, by densification of the outer...     

A nozzle in a descending discharge duct for hot flue gases has a tubular body of hourglass shape partly obstructed by a vertically movable frustoconical insert which defines a narrow, downwardly diverging annular channel with the lower part of the body lying below its waist. The upwardly converging top...     

A movable obturator provided with two flow orifices is placed between an abutment member and two nozzles for the admission of hot water and cold water. The obturator is capable of sliding over the nozzles and provided with a plastic shoe covered by a metallic shell on which the nozzles are applied in...     

A valve comprising a valve body having a bore, a hollow plunger reciprocable within said bore and having radial ports to control flow of fluid under pressure between various valve body openings. Seals are disposed about the exterior surface of the plunger to seal against fluid flow longitudinally of...     

A butterfly valve assembly includes a two-section housing in which a resilient liner is seated. The liner includes diagonally opposed collars, with a bushing being bonded within each collar. A gate is rotatably mounted within the liner and includes closure, stem and stub shaft portions of integral, one-piece...     

A control valve for regulating flow of erosive fluids comprises an inlet at right angle to an outlet, a reciprocating valve plug and mating valve seat. The valve has an outer body made of stainless steel and an inner body composed of three sleeves formed of chromium carbide or tungsten carbide. The valve...     

A terminal and gauge assembly which provides connections for lines to or from individual fluid pressure circuits, such as the pneumatic circuits of a pneumatically operated control system includes a duct with a removable cover. The lines run longitudinally inside the duct. A bar located on the cover...     

A fluid control valve includes a valve body having a passageway, a valve stem, a valve seat, a floating stem end member and a captive internally threaded insert. The valve stem has a molded-on, color-coded external thread mating with the internal thread of the color-coded insert so as to advance or retract...     

The present invention provides an improvement in fluid flow control valves which utilize polymeric rubbery materials either as the valve member or the valve seat in the flow control valve. The improvements are obtained by utilizing as the rubbery material for either the valve seat or the valve, a semi-rigid...     

A valve having a plunger with opposite end sections of equal diameter, a control section of lesser diameter and a valve member. One end section extends from the inlet chamber through a seal to the exterior of the valve, and the other end section extends from the outlet chamber through a seal to the exterior...     

A diverter valve adapted for use in septic systems for controlling the flow of effluent from a septic tank to a plurality of leach beds, comprising a thick-walled injection molded valve body of PVC or ABS plastic, closed at the bottom and having a centrally disposed valve chamber provided with an inlet,...     

A gas-tight ball valve having a ball and a valve seat made of hard material such as sapphire or ruby, wherein said valve seat has two annular surfaces forming between them an edge with an obtuse angle, the ball resting on one of said surfaces, and a method for producing the valve seat by lapping said...     

A check valve which has top and bottom flanges and a valve body thereinbetween. The flanges have aligned holes therethrough which serve as an inlet (bottom flange) and an outlet (top flange) for fluid flowing through the valve. A spherical ball is contained within the valve body and rests on a ball seat...     

A vacuum-tight closure assembly includes a valve seat; a spreadable valve plate movable into a closed position for assuming a spreaded state in which it sealingly engages the valve seat; and a guide arrangement for a centered guiding of the valve plate during its motion into the closed position. The...     

For use in a welding system which uses combustible gases and the like, a flash arrester comprising a main body having an opening therethrough and including a frusto-conical seat, and a ball cage body positioned in the main body and having an axial opening therein. The ball cage body has a frusto-conical...     

An improved, large diameter butterfly valve specially adapted for use in corrosive or high temperature environments. The valve closure plate of the butterfly valve includes a frame comprised of a shaft, an annular flat bar defining the perimeter of the frame and lightweight stringers extending from the...     

A valve slide plate is described in which flow noises are reduced. A flow passage for regulating through-flow volume or mixture is recessed in the surface of the valve plate. The flow passage is of expanded cross-section within the plate.

A pressure and vacuum relief vent has the stem of each of its pressure and vacuum valves, which are urged to their closed positions by weight, slidably mounted in a bushing of Teflon in a metallic seat ring so that corrosive build up does not occur on the bushing whereby each of the valves is responsive...     

A control valve having an actuating member supported within and between a closed end and a seat end of a housing, the actuating member having a fixed end connected to the close housing end and a free end connected to a movable valve body, the actuating member including an elongated piezoelectric element...     

A control valve has a gland seal comprising a sealing member formed of a flexible polymeric material, preferably PTFE. The sealing member comprises a tubular portion located around the valve spindle and a radially extending flange encircling the tubular portion, the sealing member being supported within...     

A cam actuated valve (10) is disclosed having a butterfly-type valve member (52) rotatably mounted to a crank member (40) extending into a fluid passageway (23) defined by the valve housing. A rectangular bracket (12) attached to one side of the valve housing has parallel edges (66, 68) forming guide...     

A ball valve having a seat assembly (46) in the form of a flexible metal holder (52) which carries a resin impregnated graphite face seal (54) contacting the ball (28). Flexibility of the holder is provided by a leg (58) thereof which terminates in a free end having an annular lip (62) in sealing contact...     

Valve, in particular for the sanitary engineering field, with two flat and smoothened plates, one on top of the other, held in a housing and movable towards each other as a valve element whereby the plates have one or more through-apertures for one or more media. To simplify installation and reduce costs,...     

A valve seal mechanism for cryogenic applications includes an undercut groove in a seating region of the fluid passageway in a valve body. Disposed within the groove is a shouldered resilient wear ring of polytetrafluoroethylene, the outer circumference of the shouldered portion of the wear ring having...     

A low-cost, two-piece medical valve with improved reliability which can be made utilizing a broader range of materials then heretofore possible and capable of manufacture with easily maintainable molding tolerances. These improvements result from the incorporation of a straight cylindrical seal between...     

There is disclosed a two-way valve which includes a single valve seat for controlling the flow of fluid in opposed directions through the valve responsive to differential fluid pressures across the valve. The valve includes first and second ports and a valve chamber. Across the valve chamber there is...     

A refrigeration system including a refrigerant flow reversing valve. The flow reversing valve includes a valve housing providing a chamber communicating with a refrigerant compressor discharge via a first port and a bearing surface with second, third and fourth ports opening into it, the second port...     

A replaceable cartridge valve assembly adapted for use in a sanitary fitting which includes a pair of discs, each disc having at least one opening or orifice therein to provide the valving function and an auxiliary valve means is disclosed. The valve assembly is made in the form of a removable cartridge...     

Generally disclosed is a filtration system including a pair of filters having a pair of diverter valves connected at the input and output thereof for controlling the flow of viscous fluids through one of the other of the filters. More specifically, there is disclosed a diverter valve for controlling...     

A high response servovalve has an improved valve spool slidably mounted within the bore at a sleeve or body. The bearing surfaces on the spool are formed of a relatively soft material. The balance of the surfaces of the spool and the sleeve or body are relatively hard. The soft bearing material tends...     

A valve for high temperature abrasive service having a body with an inlet connected to a valve chamber and an outlet extending through a valve seat from the valve chamber, a valve stem movable toward and away from the valve seat, a valve member mounted on the valve stem to coact with the valve seat to...     

A ball valve assembly for controlling the flow of abrasive particulates including an enlarged section at the bore inlet and an enlarged section at the bore outlet. A refractory ceramic annular deflector is positioned in each of the enlarged sections, substantially extending the useful life of the valve.

There are disclosed herein several embodiments of a pressure responsive discharge valve assembly particularly adapted for use in reciprocating type gas compressors. The valve assembly includes a discharge passage valve seat of frusto conical shape in which a generally complementary shaped light-weight...     

A valve assembly for controlling the flow of a liquid fuel. The assembly includes a spring-biased movable valve member made of tungsten carbide, a captured sleeve member also made of tungsten carbide, and a readily accessible filtering screen member disposed in the fuel duct inlet of the assembly. In...     

In-line flow control apparatus for intravenous solutions includes a housing inserted in a conduit carrying liquids and includes a housing connected to the conduits with a valve disposed within the housing and a valve core disposed within the valve movable in response to rotation of a screw for controlling...     

A knife gate valve (10) comprises an elongated, relatively-flat rigid frame (16) having two rigid side plates (24 and 26) being spaced from one another. A relatively-resilient valve liner (14), forming a valve seat about a liquid flow passage (22) through the frame (16) is insertable into the frame (16)...     

A fluid dispensing nozzle for dispensing gasoline includes a main valve, an actuating lever for operating the main valve, a plastic plunger to which the actuating lever for the nozzle is pivoted, and a sleeve slidably mounted on the lower end of the plunger for preventing breakage of the plunger. The...     

A gate valve having an expandable valve closure apparatus which is capable of expanding to seal two oppositely located parts in its valve housing. The expandable valve closure apparatus if pivotally mounted for movement on the end of a swing arm member to permit the expandable valve closure apparatus...     

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

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...     

An aluminium valve which has a seat of stainless steel. This seat is provided by friction welding stainless steel onto aluminium and then shaping the composite to size. The stainless steel can be covered with stellite. The valve is closed by abutment of a PTFE bush onto the seats. The seat can comprise...     

A self-actuating drip valve for attachment to a standard faucet for the prevention of freezing of exposed water pipes. An elongated housing includes means for securing one end of the housing about the open end of the faucet. A valve seat is provided within the housing so that it is substantially adjacent...     

By providing direct activation of the ball element by the cam lobe of a cam member in a ball valve, instead of utilizing additional links between the cam lobe and the ball member, positive valve action is achieved, the cost and complexity of the valve is decreased and the problems which arise from corrosion...     

A tire valve assembly (10) which includes a valve stem (11), a combined actuating pin and valve element (14), a spring (18) and a retainer (16). A valve seat (19) is formed as part of the stem, and the combined pin and valve element is made of a material which is sufficiently rigid to function as an...     

A reinforced valve member including a body having upstream and downstream sides and an annular rim forming a first sealing surface. A frusto-conical portion of the body extends upstream from the first sealing surface and displays a second sealing surface. A substantially conical flow diverter extends...     

A sliding gate valve includes a valve body (1) and a valve plate (5) which can slide transversely to the direction (108) of flow of the medium and exhibits narrow slot passages (50, 51) running transversely to the direction of the stroke, and which cooperates with a counterpart (4). The counterpart (4)...     

A valve closure member with a hub which extends beyond the radius of the circumferential sealing region of the closure member to a point greater than the extended edge of the lip of the valve seat recess in the valve body. The extended hub is spaced from the circumferential sealing region by a recess...     

A valve including a cast or nodular iron body and a cast or nodular iron valve member having sealing surfaces which seal the fluid passage in the closed position of the valve member. At least one of the sealing surfaces in the closed position is formed by a bonded powder metal layer having high wear...     

A ball-check type check valve is disclosed. A valve housing comprises a first vertically disposed cylindrical section and a second section which extends diagonally upwardly and away from the first section. A third housing section extends away from the second section at a lesser horizontal angle. When...     

The flap for ventilation ducts, particularly for automobile air-conditioning systems, includes a flap member having opposite surfaces with a predetermined number of openings therein, a longitudinal bottom edge, opposite side edges and an upper edge. A pocket-shaped covering of foam material on the flap...     

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...     

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...     

A valve of special usefulness in handling solids-containing or solids-producing fluids comprises a floating valve seat comprised of inner and outer rings, the outer ring being fixed within the valve body and the inner ring being urged directly from the outer ring by one or more springs against a gate...     

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)...     

A check valve is disclosed having a housing with first and second sides, the first side having an opening and the second side having an inner portion and an outer portion with openings within the inner portion, and a thin membrane within the housing and having an inner portion and an outer portion with...     

The invention relates to a magnetic valve for a refrigeration plant. The valve is of the type having a magnetic coil with a plug member of magnetic material projecting into a central bore thereof. The yoke has parallel limbs. A housing block member is mounted in fixed relation to the coil and in spaced...     

A needle valve is formed by molding a resilient tip to a rigid body having a tip receiving cylindrical portion or barrel which includes tip retaining means for securing the resilient tip thereto. The tip is then ground until the outer edge of the barrel is engaged to form a resilient single angle or...     

A valve which is primarily useful in avoiding liquid being held or trapped around the exterior of a closure member used to close off the flow from an inlet to an outlet cavity through an opening after having been positioned so as to permit such flow can be constructed so that the terminal surface on...     

A check valve particularly useful for water well applications. The valve components are positioned at the low pressure, downstream side of a flexible poppet. A flexible guide, shaped generally as an inverted top hat, snaps into place in an annular groove and responds to longitudinally directed forces...     

A rotor valve has a set of sealing members or inserts positioned in longitudinal channels formed on the outer surface of a cylindrical rotor. A resilient O-ring snuggly engaged in a groove in the rear surface of each insert urges it against a surrounding rotor chamber formed in a valve body. Due to the...     

A valve slide plate of ceramic oxide or a similarly suitable material with at least one overflow passage in the form of an aperture and which is movable on a rigidly mounted base plate with fluid passages by a driver element includes a flexible seal which is interposed between the valve slide plate and...     

An electrically operated valve is provided including a motor securely and non-rotatably mounted to the valve and in communication with the valve stem. A cam also is mounted to the valve stem. A limit switch with a cam follower is mounted to the motor gear housing at a plurality of locations so as to...     

A seal device for a gate valve is disclosed, in which annular members facing the front and rear surfaces of a gate valve member having a through hole are coupled to a valve cage by inner and outer bellows, each of the annular members has an annular recess formed on the side facing the gate valve member...     

A valve assembly which includes a valve body made of a hard synthetic resin, preferably PVC or PVDF. The valve body is formed with a fluid passage laterally extending therethrough, and having no flanges for connection with neighboring pipings. There is a valve member for the cooperation with the valve...     

The present invention relates to plugcocks or stopcocks, and the method of producing the same. The plugcocks are formed of two primary elements a body and a plug or stem member rotatably mounted therein. The plug member has the shape of a cone the bottom base of which is larger than the top base both...     

A gate valve comprising a valve casing having a valve chamber therein, a valve body moving up and down in the valve chamber so as to open and shut a valve passage, and a spindle engaged with the valve body and moving up and down in accordance with rotation of a handle so that the valve body moves up...     

A piston operated valve utilizes a piston which is driven by high pressure air to open or close the valve. The valve includes valve body portions (7, 8) which are formed of carbon fibre containing fluorocarbon resin, and which are detachably mounted on a valve rod (6). Where the valve is used in a duct...     

A valve actuator is described which employs a hollow housing fabricated from a stamped metal. Located within the housing is a rotatable spindle which spindle is associated with a traveling nut which nut travels along the spindle as the spindle is rotated. The traveling nut has pivotally secured thereto...