Abstract: A tapered plug valve having a plug provided with a separate drive shaft and formed with a channel not connected to the plug but connecting the ends thereof to enable pressure equalization. The channel may be formed by being directly drilled through the plug, or comprise a tube, secured in position by welding in a groove cast in the outer surface of the plug. A non return valve is positioned in the channel to limit pressure equalization from the wider end to the smaller end of the plug.

Abstract: A high temperature water-cooled gas-tight lubricated steel plug valve for handling abrasive particulates (such as iron ore or sponge iron) having a water-cooled hollow double-walled housing with opposing inlet and outlet, a hollow internally-baffled axially water-cooled cylindrical plug with a transverse flow pipe defining a bore therethrough, at least one relatively thin-walled replaceable iron wear liner of generally cylindrical shape having corresponding bore passages and being positioned around said plug member and fixedly keyed within said housing whereby wear is generally limited to the relatively-moving interfacing inner surface of the wear liner and the outer surface of the plug member. The plug being machinable to restore the proper shape and tolerances when combined with replacement of the wear liner by one of compensatingly greater thickness.

Abstract: A valve has a molded plastic valve housing defining an inlet port, an outlet port, and a chamber between the ports. The housing also has a collar defining an opening into the chamber and carrying a molded plastic cap formed with a central hole. A molded plastic valve body is rotatable about a body axis between open and closed positions in the chamber and is unitarily formed with a throughgoing passage aligned with the ports only in the open position, a stem extending along the body axis through the hole of the cap, axially oppositely open mass-reducing pockets, and an annular rim captured between the cap and the collar.

Abstract: A shut-off device, such as a valve or a cock, for pipelines and comprising a casing provided with a flow passageway. The casing is provided with an inlet and an outlet and at least one shut-off member provided with a cavity, the member being movable between a position in which the flow passageway is open and a position in which the flow passageway is closed. An auxiliary chamber is arranged in the casing and communicates with the cavity of the shut-off member. The auxiliary chamber is defined by a separate, almost non-resilient wall portion abutting an abutment face on the wall of the casing. A pressure-relieving passageway formed in the wall of the casing is arranged between an abutment face at the auxiliary chamber and the inlet or outlet of the shut-off device. As a result, a shut-off device having more simple structure than known shut-off devices is obtained.

Abstract: A valve comprising a body having an interior cavity, an inlet port and an outlet port; an upstream seat and a downstream seat positioned within the cavity, each seat including a bore in alignment with the inlet and outlet ports to define a flow passage through the valve body; a closure member movably positioned between the seats to either open or close the flow passage; a seat-to-closure member seal defined between each seat and the closure member, the seat-to-closure member seal defining a first area between the seat-to-closure member seal and the bore of the upstream seat; wherein the upstream seat includes a sealing member between the seat and the valve body which is positioned asymmetrically around the bore; and wherein the sealing member defines a second area between the sealing member and the bore which is larger than the first area.

Abstract: A shut-off device of the double block-and-bleed type comprising a flow passageway accommodating two shut-off members provided with through-going cavities, and a drain means. The flow passageway is provided with an inlet and an outlet. Each of the shut-off members may be moved between a position in which the flow passageway is open and a position in which the flow passageway is closed. In association with the shut-off members two auxiliary chambers are communicating with cavities of the shut-off members. The shut-off device is formed of a single undivided casing. The shut-off members are truncated cone-shaped and mounted in matching truncated cone-shaped recesses in the common casing. As a result, the overall length of the shut-off device may be reduced compared to prior art. Moreover, the tightness at high pressure, e.g. above 100 ato. is enhanced.

Abstract: The nozzle comprises a grip casing with an approximately rectilinear shape inside which, in a longitudinal direction, there is a rigid pipe for water passage formed by an upstream section and a downstream section separated by an internal cavity of the nozzle casing and a push-button movably inserted in said cavity to allow and, alternatively, to cut off the flow of water along the abovementioned pipe. The push-button is substantially in the shape of a half-disc with an internal passage extending from one side to the other of the same and is rotatably inserted in the cavity so that it can be rotated round an axis perpendicular to the direction of the passage of the water between an open position and a closed position.

Abstract: A ball valve having a one-piece seat member is disclosed. The one-piece seat member is cylindrically shaped to engage a valve chamber within the valve body, and includes an internal cavity for receiving a ball member, a first axial opening for receiving an operating stem engaged to the ball member, and first and second radial openings that align with inlet and outlet passages in the valve body. The one-piece seat member can be machined from such materials as polytetrafluoroethylene, ultra-high molecular weight polyethylene, fluorinated ethylene propylene, or perfluoroalkoxy. To make the ball valve, the one-piece seat member is formed with the internal cavity, the first axial opening, a second axial opening opposite the first axial opening, and the first and second radial openings, and is caused to be in a deformable state.

Abstract: A safety valve for use in a horizontal christmas tree is disclosed which comprises a valve element rotatably mounted in a valve body for opening and closing a flow path through the valve body. A seal is provided between the valve body and valve element and defines a sealing surface at which all points are spaced equidistant from the valve body rotational axis. A hydraulic actuator is also provided for rotating the valve element.

Abstract: The float-controlled shutoff valve has an upright flow passage controlled by a transverse valve spool rotated between open and closed positions by the float in response to changing levels of liquid within the holding tank. The spool has a deep, generally U-shaped, diametrically extending cavity on one side and a single, solid sidewall on the opposite side, the cavity being so formed that it presents a cross-flow inlet approximately one quarter turn away from the passage blocking surface of the sidewall. Hence, when the spool is in its open position during filling, the cavity is vertically flow-aligned with the passage while the blocking sidewall is disposed alongside the passage, and when the spool is in its closed position the blocking sidewall spans the passage above the horizontally disposed cavity to prevent fluid movement past the spool.

Abstract: A flow valve or shut-off cock for flow networks having sealing means of particular features which make its design easy and increase its tightness and useful life. This valve provides sealing means reacting in proportion to the flow pressure, for which purpose sealing means of the lung type are available, that is to say, the sealing means consist in a flexible and hollow body, which is inflated by the flow pressure going into the valve, pressing one of the walls of the flexible element against the opening of the valve intended to be blocked or obstructed. This sealing element of the lung type is controlled by the rotation of a rigid stem component partially surrounding it in its upper zone and in external side areas.

Abstract: A urine drainage tap is provided which includes an elongated passage having a barrel disposed therein and a control member located in the barrel which is moveable in relation to the barrel for defining an open and closed position. The lever arm is connected to the control member to permit movement of the control member. In an important aspect of this invention, the lever arm is moveable so as to extend along the passage in substantially opposite longitudinal directions relative to the passage when the control member is in the open and closed positions so as to avoid the tendency for the patient to inadvertently open or close the control member by leaning on the lever arm.

Abstract: A vacuum tubing valve including a first receiver tube shoulder including a tubular aperture extending along a longitudinal axis for receiving a first tubular hose. Connecting the shoulder is a stator unit including a C-shaped cavity with an opening about the side opposite the curved C-shaped wall and two apertures within the C-shaped wall and in axial alignment along the longitudinal axis. A 10 second receiver tube shoulder and tubular aperture extend along the longitudinal axis joining the stator about the second aperture. The stator includes a C-shaped rotor positioned and rotatable within the cavity, and having an elongated channel extending end-to-end. The channel is in alignment along the longitudinal axis with the first and second apertures when the rotor is in a first position, and the channel is off-set from the longitudinal axis when the rotor is in a second position.

Abstract: A rotating actuator comprising, eddying causes noise production that is to be avoided flat boundary faces formed at a throttle opening, and a flat boundary face that is formed at an outlet opening. Streamlined transitions with one convex and one concave region each are provided in the inlet connection piece from a frustoconical constriction to the boundary faces, and a streamlined transition with one convex and one concave region to a frustoconical widening of the outlet connection piece is provided in the outlet connection piece. The rotating actuator is used in particular to regulate the idling rpm of internal combustion engines.

Abstract: A rotary valve assembly comprising a valve body having a stem passageway in communication with the valve body cavity which contains a closure member for selectively closing or opening the fluid flow passageway intersecting the valve body cavity. A valve operator consisting of a reciprocatable and rotatable stem passing through the stem passageway is connected to the closure member so that when the stem rotates, the closure member rotates together with the stem. The stem is provided with a back-seat and the valve operator reciprocates the stem to unseat and reseat the stem onto the stem seat located on the valve body surrounding the stem passageway in order to seal the stem passageway from the valve body cavity. Sealing of the stem passageway isolates the stem packing from the fluid in the valve body cavity, prevents fugitive emissions related to stem leakage and prolongs the useful life of the stem packing.

Abstract: A sealing assembly for a valve with a rotary actuating shaft includes a top seal formed of a plastic diaphragm and a metal diaphragm, both of which are in sealing relationship with the actuating shaft. The metal diaphragm has a cantilever supported lip that is spring fitted into resiliently biased relationship with the actuating shaft. The sealing surface of the metal diaphragm provides a fire-tested seal in the event that the seal of the plastic seal is destroyed by fire.

Abstract: Fluid pressure changes are imposed on selected interior surfaces of a plug passageway of a plug valve to create torque. In one embodiment perturbations are provided in selected flow surfaces of the valve plug to create turbulent boundary layer flow along such surfaces which generates a beneficial stabilizing torque tending to reduce or eliminate holding forces conventionally provided by mechanical parts such as detent mechanisms. In another embodiment, pilot holds between interior and exterior plug surfaces are used to alter the fluid pressure at diagonally opposite locations relative to the plug rotation axis to produce the stabilizing torque.

Abstract: An improved valve plug actuator is provided which is substantially impervious to environmental contamination and which provides greater axial transfer of seating force to an associated valve plug. The actuator uses an indexing race formed in an indexing sleeve to support a thrust bearing on one side of an operating screw collar and an enhanced retaining ring to capture an opposing thrust bearing. Lubrication containment and environmental isolation of the interactive surfaces of the actuator is maintained by o-ring seals carried by the retaining ring and by a lowermost movable component of the actuator which also is rigidly affixed to the associated valve plug.

Abstract: The present invention is directed to an improved driver for operatively connecting an actuator to a rotatable valve member disposed in the fluid path of a valve housing. The improved driver of the present invention comprises a drive shaft for connection at one end with an actuator and having a yoke connected to the other end of the drive shaft. The yoke preferably comprises two arms extending on opposite sides of the fluid path through the valve housing. Each arm includes a contact member, e.g., a dog or set screw extending from the arm, for engaging and turning the rotatable valve member while not rigidly connecting the arm with the valve member. In a preferred embodiment, the arms of the yoke extend around the fluid path and are joined together with a trunnion to aid in centering the driver and rotatable valve member.

Abstract: A plug valve having a body with an inlet, an outlet and a plug-receiving opening which intersects the inlet and outlet. A plug is mounted in the opening and has an outer wall and an orifice extending therethrough. The plug is movable from an operative position in which the orifice connects the inlet to the outlet to allow fluid to flow to an inoperative position in which the orifice is disconnected from the inlet and outlet to prevent the flow of fluid from the inlet to the outlet. The plug outer wall has a seal-receiving portion which is spaced from the orifice and which is adapted to removably receive a seal retainer assembly. A seal is interposed between the seal-receiving portion of the plug and at least a portion of the seal retainer assembly to form a seal.

Abstract: A tapered plug valve comprising a tapered plug rotatably mounted within a bore in a valve body to intercept a passageway. Spacing means is provided to limit the amount of axial movement of the plug and biassing e.g. spring means is provided to apply an axial force to the plug.

Abstract: A plug-type gas valve in which a key with a radially extending passageway is supported to rotate between open and closed positions within a bore in a valve body, the passageway establishing communication between diametrically spaced inlet and outlet ports when the key is in its open position. O-rings are positioned in grooves formed in the outer surface of the key above and below the passageway and seal against the wall of the bore in the body to prevent leakage. To lubricate the O-rings and further guard against leakage, grease is injected into pairs of axially extending grease channels formed in the outer surface of the key. To prevent the grease from being blown out of the valve by high pressure when the valve is partially open, one grease channel of each pair communicates only with the upper O-ring groove while the other grease channel of each pair communicates only with the lower O-ring groove.

Abstract: Two embodiments of a metal valve, each having a body with flow passages and curved internal sealing surfaces and a valve member with a flow passage and external curved sealing surfaces. Both the body and valve member sealing surfaces are curved as a portion of the involute of a circle and are sealingly engageable. The valve member is mounted in the body for rotation between open and closed positions, permitting and preventing flow through valve.

Abstract: The invention is a valving device for use in laparoscopic surgery. The device generally has a valve housing having a wall defining a common channel. The channel includes at least first and second apertures extending through the channel wall to allow fluid communication to and from the channel. The invention also includes a laparoscopic probe having a channel created by a wall defining a first open end and a second open end, as well as a valve for trapping debris positioned within the channel first open end.

Abstract: An improved rotary plug valve of the type having a valve body with a fluid inlet conduit and a fluid outlet conduit therein has a rotary plug disposed for rotation in the valve body between an open position and a closed position. In the closed position the plug has a seat seal disposed in a groove in the cylindrical surface thereof which seat seal extends adjacent and surrounds the fluid inlet conduit to seal the inlet conduit against fluid flow. The groove in the plug has a radially inner wall, a radially outer wall and a base wall. The base wall extends at an angle so that the radially outer wall extends more deeply into the plug than the radially inner wall. Preferably the groove and the seat seal have an annular, cylindrical shape. Also preferably the seat seal has a shape so that a pressure space is formed adjacent the base wall of the groove and a gap is formed adjacent the radially inner wall of the groove. Fluid pressure in these urge the seat seal into sealing positions.

Abstract: A seal for a shaft in a structural body. The seal is configured to surround the shaft within said structural body. The seal has a flange making a gasket seal with the structural body. The seal has at least one portion distorted and stretched into a tapered configuration and into a tension-related sealing association with the shaft. The seal is made of a memory-retainable material. This memory urges the distorted and stretched tapered portion towards its original configuration, thereby enhancing the sealing association with the shaft.

Abstract: A plug-type gas valve in which a key with a radially extending passageway is supported to rotate between open and closed positions within a bore in a valve body, the passageway establishing communication between diametrically spaced inlet and outlet ports when the key is in its open position. O-rings are positioned in grooves formed in the outer surface of the key above and below the passageway and seal against the wall of the bore in the body to prevent leakage. To lubricate the O-rings and further guard against leakage, grease is injected into pairs of axially extending grease channels formed in the outer surface of the key. To prevent the grease from being blown out of the valve by high pressure when the valve is partially open, one grease channel of each pair communicates only with the upper O-ring groove while the other grease channel of each pair communicates only with the lower O-ring groove.

Abstract: A stopcock, in particular for burner fittings, having a housing and a truncated-cone-shaped plug rotatably inserted therein, a spindle of the plug extending through a fixed retaining disk and being provided with a setting nut by means of which a bearing is held between retaining disk and plug, wherein one bearing each is provided on either side of the retaining disk, and the retaining disk or a part of the same is attached to the housing in such a way that it can be set relative to the housing in the axial direction.

Abstract: A valve for fluids with arrangements of O-rings on the mantle (lateral surface) of the valve stem, which permit the utilization of a variety of geometrical shapes of revolution for the design of the stem. This invention makes possible the reduction of the valve component's manufacturing costs as well as the utilization of the said valve in fluid networks of higher pressures than those possible in traditional valves of this kind. The valve comprises a stem which is a revolution volume and its mantle has at least one perforation with at least two openings, at the same level or at different levels; being said mantle of the stem grooved by one or more furrows which lodge respective O-rings, being the said grooves of a closed loop geometry that surrounds the said mantle so that each groove passes at least over one opening of the perforation or over one virtual opening enclosed between two real openings of the same level of the said perforation.

Abstract: A liquid fuel shut-off valve for insertion through the feed pipe opening and mounting inside a fuel tank including, in combination, a valve body having an inlet and an outlet joined by a first bore aligned axially with the feed pipe through which the fuel is fed to fill the tank, a valve spool rotatably mounted in a cross-bore formed in the valve body between the inlet and the outlet and attached to a float extending outward from the valve body that is responsive to the level of liquid in the tank, and a valve shut-off formed in the spool including a second bore formed transverse thereto for passing fuel between the inlet and the outlet, and a relief opening formed in the trailing edge of the wall of the second bore allowing progressive rotation of the second bore from a first position in full hydraulic alignment with the first bore to a second position in full hydraulic closure with the first bore free of a countervailing hydraulic turning moment developed by the flow of fuel there through.

Abstract: A medical device valving mechanism comprising an elongated valve body molded to have a longitudinally extending body shaped to be gripped and securely held in either hand leaving the hand's thumb free for valve operational movement. The body has at least one fluid passageway extending longitudinally therethrough and a cylindrical opening extending transversely therethrough to intercept the at least one passageway. A cylindrical molded plastic, one-piece rotor for snug slidable and rotational insertion into the cylindrical opening to block the at least one passageway is provided. The rotor has at least one transaxial passageway which opens the at least one fluid passageway through the valve body when the rotor is in its valve opening position and which closes the at least one fluid passageway when the rotor is in its valve closing position. A thumb-actuated means is provided for rotating the rotor, the actuated means is disposed above the valve body and the rotor for convenient thumb movement.

Abstract: A plug valve having a body with an inlet, an outlet and a plug-receiving opening which intersects the inlet and outlet. A plug is mounted in the opening and has an outer wall and an orifice extending therethrough. The plug is movable from an operative position in which the orifice connects the inlet to the outlet to allow fluid to flow to an inoperative position in which the orifice is disconnected from the inlet and outlet to prevent the flow of fluid from the inlet to the outlet. The plug outer wall has a seal-receiving portion which is spaced from the orifice and which is adapted to removably receive a seal retainer assembly. A seal is interposed between the seal-receiving portion of the plug and at least a portion of the seal retainer assembly to form a seal.

Abstract: A valve which is eccentrically adjustable, wherein the eccentric mating between a valve and valve seat is defined by a fixed eccentric and an adjustable eccentric. The fixed eccentric is provided by a drive shaft for the valve closure member being fixed eccentrically of a central axis of rotation of the valve closure member. The adjustable eccentric is provided by a rotatable eccentric bearing for receiving the drive shaft.

Abstract: A safety I.V. drug introducer set for use with a I.V. administration set is described for facilitating the injection of drugs into a primary fluid line without the necessity of an exposed hypodermic needle. In one embodiment, a Tee is inserted in the I.V. line whose cross-portion includes one or more check valves and whose stem portion comprises a socket for receiving the distal end of an outer tuburlar shaft having a pair of oppositely disposed ports passing through the wall thereof near the distal end. Fitted into the lumen of the outer tubular shaft is an inner tubular shaft having but a single aperture at its distal end alignable with one, the other, or neither of the pair of apertures in the outer shaft. A hollow key member is designed to fit within the non-circular bore of the inner tubular shaft for facilitating the rotation thereof. The key member also includes a single aperture at its distal end which is continuously aligned with the single aperture in the inner tubular member.

Abstract: A polyethylene plastic valve has a molded cylindrical body portion with an internal chamber with inlet and outlet openings. A unitary plastic plug member is rotatably positioned in the chamber. The plug member has an actuator portion formed of impact resistant plastic material, and a plug portion formed of dimensionally rigid plastic material with a flow passage therethrough. The plug member has open and closed positions. Dual durometer valve seats are positioned on the plug member to close the inlet and outlet openings in the valve body. The actuator portion of the plug member extends upwardly through the chamber and seals the internal chamber at the top by means of a circumferentially extending flange portion. A bottom cover plate is fused to and seals the lower end of the internal chamber. The bottom cover is arranged to disengage from the valve body and relieve excess pressure build up in the lower end of the chamber.

Abstract: A plug valve includes a molded polymeric valve body having a bore extending therethrough. Inlet and outlet branch passages are integrally molded with the valve body and communicate with the bore. A valve member is received in the bore and is adapted for rotation between open and closed positions for regulating fluid flow through the plug valve. The valve body includes a metal reinforcing member molded therein. Centering rings formed from substantially the same polymer as the valve body are received on opposite ends of the reinforcing member to completely encapsulate the reinforcing member. The reinforcing member is received concentrically around the bore to maintain close dimensional tolerances between the valve member and valve body.

Abstract: A control valve, which consists of a body (1) provided with flow-through channels (2, 3) and of a closing member (5) arranged rotatably in the body in an expansion (4) of the channel, the rotation shaft of which is eccentric in relation to the sealing surfaces of the closing member and the seal of the body. In an open position of the valve a circular flow is formed around the closing member between a wall of the body and the closing member (5), the main flow passage of which circular flow is located in a channel between the inner surface of the body and the upstream edge (16) of the closing member. The closing member (5) has an extension (17) in its upstream edge (16) in the open position, which extension in an initial phase of the opening reduces the cross-sectional area of the main flow passage.

Abstract: A reinforced plastic valve includes a generally cylindrical major body portion which is at least partially formed of a plastic material. The major body portion has an axially extending interior chamber. A pair of flow lines intersect the major body portion and the interior chamber thereof. A plug is mounted in the chamber and is selectively rotatable to control flow of fluid through the flow lines. The major body portion includes a reinforcing sleeve formed of metal which is encased within the plastic major body portion to surround the interior chamber.

Abstract: In connection with an electrode holder for immersion-type flow-type and attachment-type measuring systems in analytical chemistry, in particular for pH, conductivity, oxygen and chloride measurements, or the like, comprising an outer pipe in which an inner pipe carrying the measuring probe is supported in axially sliding relationship, and a stopcock blocking the supply of measuring agent by means of a plug of the stopcock when the inner pipe is retracted from the measuring agent it is proposed to leave the plug open on one side in the area of its passage channel and to have a remaining rear wall of the passage channel facing the supply opening of the measuring agent.

Abstract: A tamperproof rotary valve which includes a valve body having a fluid flow passage extending therethrough. The passage is intersescted by an actuator opening in the body and defining a valve chamber thereat. A rotary valve is disposed in the chamber for opening and closing the fluid flow passage. An actuator is journaled in the actuator opening and is coupled to the rotary valve for rotating the valve. A groove is formed about the actuator, and a contractible/expandable locking ring is disposed in the groove and projects outwardly of the groove beyound the bounds of the actuator when in a free, expanded condition. The locking ring is contractible into the groove to allow assembly of the actuator into the actuator opening. A locking groove is formed in the actuator opening in the valve body and into which the locking ring expands when the actuator is in a proper assembled position in the actuator opening.

Abstract: A rotary plug valve is disclosed having a housing and a valve core which can be selectively locked in an unlimited number of positions relative to the mandatory inlet and outlet piping, said valve having no visible indication of the internally concealed locking mechanism location. Selectively, a locking pin, that can be activated by authorized personnel, is passed through a passageway engaging a concealed locking cap preventing rotation of the valve core relative to the valve housing for security and safety applications. Removal of the locking pin with an authorized key permits operation for conventional usages.

Abstract: A one-hand operable valve comprises a housing and an actuator which is mounted in the housing. The actuator includes a pair of driving members, and the housing includes a pair of support members. These members provide two pairs of pressure application surfaces oriented to permit the operational state of the valve to be changed using two fingers of one hand. The valve preferably includes a locking mechanism which selectively locks the actuator and housing to prevent relative rotation therebetween. In the preferred embodiemnt, a system of indicia is employed to designate the operational state of the valve.

Abstract: A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem.The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet.

Abstract: A medical device valving mechanism comprising a molded plastic, one-piece, elongated valve body molded to have a longitudinally extending body shaped to be gripped and securely held in either hand leaving the hand's thumb free for valve operational movement. The body has at least one fluid passageway extending longitudinally therethrough and a cylindrical opening extending transversely therethrough to intercept the at least one passageway. A cylindrical molded plastic, one-piece rotor for snug slidable and rotational insertion into the cylindrical opening to block the at least one passageway is provided. The rotor has at least one transaxial passageway which opens the at least one fluid passageway through the valve body when the rotor is in its valve opening position and which closes the at least one fluid passageway when the rotor is in its valve closing position.

Abstract: A regulation valve and a method for changing the characteristic flow curve and/or the maximum capacity of a regulation valve. The valve consists of a housing provided with a flow duct, a closing member, which is fitted inside the housing in the flow duct and shaped as a body of rotation or as a part of a body of rotation, and a turning shaft which extends from the closing member to outside the housing to facilitate relating the closing member. The shape of the forward edge of the closing face of the closing member differs from the shape of the rearward edge. The characteristic flow curve of the valve is affected by the shape of the edge of the closing face of the closing member at whose side the flow opening starts being formed when the valve is rotated from the closed position to the opened position. To change the characteristic flow and/or the maximum capacity, one of the two directions of rotation is chosen to be the direction of opening of the valve.

Abstract: A reinforced plastic valve includes a generally cylindrical major body portion which is at least partially formed of a plastic material. The major body portion has an axially extending interior chamber. A pair of flow lines intersect the major body portion and the interior chamber thereof. A plug is mounted in the chamber and is selectively rotatable to control flow of fluid through the flow lines. The major body portion includes a reinforcing sleeve formed of metal which is encased within the plastic major body portion to surround the interior chamber.

Abstract: A method of manufacturing a ball valve member for cooperation with a valve and a ball valve member includes utilizing a cutting tool having first and second annular cutting surfaces with one of the cutting surfaces having a smaller radius than the other cutting surface whereby a slot is cut in the surface of the ball valve member to a greater depth than heretofore possible for permitting greater penetration of a valve stem into the ball valve member and a recess is formed adjacent the slot for the ball valve stem for receiving a lug member mounted on the stem to increase torque transmission to the ball valve element when the operation stem is rotated.

Abstract: An improved seal for a fertilizer injector, such as that shown in my prior U.S. Pat. No. 4,649,836, providing a rotating sealing carrier which prevents scoring by the constant rubbing of the plate carrying the injectors. The improved seal also provides that the sealing bushing is pressed against the plate by liquid pressure from the liquid fertilizer.

Abstract: A multiway cock has a housing with three separate pipe connections disposed in a T-shaped arrangement. A spherical cock plug is located within the housing. Two bearing bosses are provided on the housing offset by 90.degree. relative to one another for providing two different mounting locations for an operating element which selectively positions the cock plug. Different arrangements of the multiway cock can be provided by selectively locating an operating element in one of the bearing bosses while using the same parts for the cock.

Abstract: A controllable outlet nozzole for pneumatic dosaging conveyors, comprising dosaging gate valve which is rotatably mounted in a housing and has a recess which runs transversely and eccentrically with respect to the axis of the dosaging gate valve and, depending upon the rotated position of the dosaging gate valve, to a greater or lesser extent exposes a through bore provided in the housing. Such an outlet nozzle is distinguished by a wide control range, reliability in operation, energy-saving functioning and a simple construction.