Abstract: An electric three-way valve comprises: an input port, a plurality of output ports and a valve core which rotates in a sliding manner in the valve seat by a driving force of a motor unit, wherein the valve core selectively opens or closes the plurality of output ports, the motor unit is attached as a separated constituent to an outside of an upper end surface of a cylindrical casing introducing refrigerant, the valve core is driven by a gear unit which transmits the driving force of the motor unit and is disposed inside the cylindrical casing, the cylindrical casing includes one opening portion and a side wall with an apex portion, a housing which is fixed to a cylindrical wall portion of the apex portion and is equipped with the motor unit is uprightly formed in the other opening portion, and the housing is attached to the cylindrical casing.

Abstract: A stop valve is provided for a hydraulic system. The stop valve includes a valve slide that can be moved to a closed position and to an open position. A blocking device for limiting the activation of the valve slide is provided at an intermediate position located between the closed position and the open position, wherein, in this intermediate position, the opening cross section of the stop valve equals only a fraction of the opening cross section present in the open position. The blocking device is constructed such that limiting the activation of the valve slide by the blocking device is realized as a function of a pressure difference value between a pressure in front of and a pressure behind the stop valve, wherein the limiting can be canceled when the value falls below a given pressure difference value. This guarantees a pressure balance controlled according to the flow when the stop valve is opened.

Abstract: A swing valve includes a body having an inner surface defining an opening, a plate positioned substantially within the opening of the body, and a pivot rod coupled to the body and the plate. The pivot rod defines a pivot axis. The plate is pivotable about the pivot axis relative to the body between an open position and a closed position. The swing valve also includes a locking mechanism coupled to the plate. The locking mechanism includes a member that is movable relative to the plate between a first position, in which the locking mechanism engages the body to lock the plate in the closed position, and a second position, in which the locking mechanism disengages the body to allow movement of the plate relative to the body.

Abstract: A rotary valve apparatus includes a casing having a fluid passageway, a rotor rotatably mounted in the casing and configured to control, by rotation thereof, a flow state of fluid flowing in the fluid passageway, a drive mechanism for rotating the rotor, and a lock mechanism configured to allow transmission of a rotational force from the drive mechanism to the rotor and to inhibit rotation of the rotor under non-rotation driving state of the driving mechanism.

Abstract: A flow control device includes a hood, a ball valve, a sealing ring, and a handle. The ball valve is movably received in an interior receiving space of the hood and the ball valve is set in sealing engagement with the sealing ring. The ball valve and the handle located outside the hood are coupled together and are thus movable in unison with each other. The ball valve defines a flow passage. The hood forms a discharge opening. When installed on an opening of any kind of container, such as a PET bottle or a glass bottle, or an outlet tube of a water tank, by rotating the handle to move the ball valve, the flow passage can be selectively set in fluid communication with the discharge opening.

Abstract: The invention relates to a connection plate between the body of a valve for hydraulic or pneumatic circuits and an actuator suitable to control the rotation of the valve stem, the valve body being provided with pawls for the stem rotations. This plate comprises a shaped body that can be inserted on the valve body and has an opening for the valve stem, said shaped body defining passageways for the pawls and adjacent seats where the pawls are housed and held following a rotation of the plate upon assembly. This allows connecting conventional types of valves and actuators to each other.

Abstract: A multi-position fuel valve includes a main body having an enclosed chamber with a number of inlet ports and an outlet port and associated seats in the chamber. Disposed inside the chamber is a revolving rotor that is connected to a selector handle located outside the chamber. The rotor provides a possible passageway between each of the inlet ports and the outlet port. The handle can rotate a maximum 180 degrees, and the valve has a pair of inlet sections and three-positions with an “off” position approximately midway between the other two positions. A pair of balls are positioned in the rotor and lodge in the plurality of seats or elsewhere in the chamber. When this occurs a certain portion of the passageway is cut off meaning there is no fluid flow from at least one of inlet ports through the outlet port. A compression spring with opposing ends bearing against the balls maintains the balls lodged in the seats, and releasably fixes the position of the rotor and handle.

Abstract: A valve assembly comprises a rotatable valve, an electrically operated actuator, and an overstroke device. The actuator comprises a component configured to move in a direction to an actuator position so as to cause corresponding rotation of the valve to a valve position in response to electrical operation of the actuator. The overstroke device is configured to enable the component to move in the direction beyond the actuator position to an overstroke position while the valve remains in the valve position in response to electrical operation of the actuator.

Abstract: A valve which intended to control the flow of a fluid, for example a gas, comprises a valve body (50), an internal member for opening and shutting-off the passage of the gases, an operating handwheel (56) connected to the opening and shut-off member, and means limiting movement of the operating handwheel (56) and of the opening and shut-off member in the direction of opening of the valve. To avoid the valve jamming in the open position, said means limiting the movement of the operating member includes a stop (60) and of a mating stop (62), with frontal contact, arranged respectively on a rotary element and on the body of the valve (50) or vice versa. To ensure optimum contact between the stop (60) and the mating stop (62), the latter forms part of an element the angular position of which can be adjusted.

Abstract: An integrated multipurpose valve is a valve in which more than one type of valves are integrated in a cage held permanently in the pipeline, and the valve as a while can perform multiple functions which allow it to be a shut off valve, a pressure reducing valve, a pressure relief valve and a check valve, and a multi-diversion valve which can divert fluid flow in several directions. The inner components of the valve can be inspected and replaced without removing the valve as a whole from the line.

Abstract: The four-way selector valve relating to the invention basically comprises a motor which has a stator and a rotor, a case, and a main body including a main valve and a valve seat, both of which are arranged in a valve chest within the case. The valve seat has a suction pressure passage and a discharge pressure passage, which lead to a suction port of a compressor and a discharge port thereof, respectively, and two passage holes which lead to indoor and outdoor heat exchangers, respectively. The main valve has a connecting part which selectively leads to one of the suction pressure passage and the two passage holes, and a pressure equalization orifice which links the connecting part and the valve chest. A rotor sleeve, which comprises the rotor, is equipped with an auxiliary valve which opens or closes the pressure equalization orifice in order to transfer pressure, and an operating pin which moves the position of the main valve.

Abstract: A multi-port valve has a housing, a flow plug and a stop. The housing defines a valve cavity and has at least three ports. The flow plug is positionable within the valve cavity between a first position, wherein the flow plug is adapted to prevent flow through a selected first port and a second position wherein the flow plug is adapted to prevent flow through a selected second port. The stop is attachable to the housing so that the stop extends into the cavity and is adapted to engage the flow plug to prevent the flow plug from blocking flow through a selected third port.

Abstract: The invention relates to a cartridge for a single lever mixer faucet comprising a fixed (4) and a moveable sealing washer (3) which are arranged in a housing (1), whereby the movable sealing washer (3) comprises a recess (15) for engaging with a control tappet (9) of a control handle (11) which traverses a pivot support (10). The invention provides that the moveable sealing washer (3) comprises, on the surface thereof which faces the control tappet (9) and which is located in the area of the outer periphery of the washer (3), a step (14) which serves as a volume stop that can cross over with regard to the pivot support (10).

Abstract: A method of producing a valve includes the steps of: providing a mold comprising a pair of mating mold halves, with each of the mold halves including a mold cavity; providing a valve member-stem unit comprising a valve member of substantially circular cross-section attached to a stem, with the valve member including a passageway extending therethrough in a direction generally normal to the stem; inserting a mold core into the passageway of the valve member-stem unit to form a mold insert assembly; positioning the mold insert assembly within the cavity of a first of the mold halves; positioning a second of the mold halves in adjacent contacting relationship with the first mold half such that the mold insert assembly is located within the mold cavities of the first and second mold halves; injecting a polymeric material into the mold half cavities such that a valve casing forms around and captures the valve member-stem unit; and removing the valve casing, the valve member-stem unit and the mold core from the mol

Abstract: A three position retaining valve wherein a slide in a rotating valve element has a seal which controls the connection of the inlet to the outlet for only one of three passages in the valve element. Preferably, the body, handle, valve element and slide are plastic and the handle and valve elements are unitary. The valve element is retained in the body by a flanged retaining ring and snap ring. The flanged retaining ring also retains a stop for the slide in the valve element. The handle includes a race and recesses cooperating with a stop and detent respectively on the body for the three positions.

Abstract: A valve assembly for inflatable bladders, including beds, balls, toys, and other inflatable objects includes a locking mechanism within the valve for releasably holding the valve opened. The valve acts in three distinct ways. In a first way the valve is closed maintaining the bladder internal pressure. In a second way the valve may be incrementally opened by a user to release the internal pressure to suit the user. In a third way the valve may be opened and locked or latched to remain open allowing the deflation of the bladder. A spring provides a return force to close the valve when the lock is not engaged. Air pressure from outside the bladder supplied by a pump or the like will force the valve diaphragm open against the spring and allow air to enter. The diaphragm is made of a resilient seal material. The locking mechanism is engaged by pressing the diaphragm open and twisting to engage a lock.

Abstract: A valve for urine drainage applications has a valve housing for attachment to a urine receptacle and a valve member rotatable within the valve housing between an open position, in which liquid can flow from the receptacle along an angled path from the inlet to the outlet from the valve, and a closed position cutting off the liquid flow. The valve member can be rotated about an axis substantially normal to the direction of liquid outflow from the valve and a manually operable tab or handle is provided for rotating the valve member in the housing and is arranged to point in the direction of the outflow from the valve when the valve member is in the open position.

Abstract: A valve assembly includes a driven shaft rotatably mounted in a housing and including a first end portion extending outward from a first end portion of the housing and a second end portion received in the housing, and a passage defined through the driven shaft. A drive member includes an annular knob fixedly mounted on the first end portion of the driven shaft for rotating the driven shaft. A shutoff valve is fixedly mounted on the second end portion of the driven shaft to rotate therewith, and at least one opening defined in the shutoff valve communicates with the passage. A valve seat abutting the shutoff valve is fixedly mounted in the housing, and at least one hole defined in the valve seat is closed by the shutoff valve. By such an arrangement, the hole communicates with the passage via the opening when the opening is rotated with the shutoff valve to communicate with the through hole.

Abstract: A hot/cold water flowrate control device, including a casing having a cold water inlet and a hot water inlet respectively connected a hot/cold water supply system and defining a ball socket, a hollow ball cap fixed to the casing, a ball valve mounted in the ball socket and having a neck extending out of the ball cap and a stepped locating groove on the outside, the stepped locating groove having a deep sliding groove section in the middle, two deep locating groove sections at two opposite sides, and two shadow borderline groove sections disposed between the deep sliding groove section and the deep locating groove sections, a water outlet pipe connected to the neck outside the ball cap, a spring-supported locating rod mounted in the ball socket and moved in a stepped locating groove in the periphery of the ball valve, wherein water is stopped from passing to the water outlet pipe when the locating rod is forced into engagement with one of the locating groove sections of the stepped locating groove; the cold (h

Abstract: A fluid valve has a housing formed by first and second halves which combine at mating surfaces to form a cavity with an inlet in the first half and an outlet in the second half. The mating surface of each half includes a notch extending between an outer edge of mating surface and the cavity, and includes an annular recess around the cavity. A pad is formed on each mating surface between the cavity and the annular recess, and has a groove that forms a bushing when the first and second units are connected. A butterfly valve member is located within the cavity and is mounted on a valve stem. The valve stem has an end that rides in the bushing and a portion that passes through the notches in the housing halves. An annular seal fits within the recesses to prevent fluid leakage between the two housing halves and also seals around the valve stem portion. In addition the butterfly valve member engages the seal in a closed state of the valve.

Abstract: A ball type mixer valve (20) has a housing (25) and a ball valve element (11) mounted for pivotable motion about a longitudinal axis (A) of the housing (25) and a second perpendicular axis (B) that is fixed with respect to the ball valve element (11). The ball valve element has a control stem (10) extending therefrom and a pin (15) extending at a substantially perpendicular angle from the control stem. Two distal ends (16 and 17) of pin (15) form pivots which are received in slots (7) formed in the valve housing to position the ball vertically in the housing and allow the motion of the ball about the two defined axes.

Abstract: An anti-syphon valve comprises a base pipe having inlet and outlet legs and a valve seat, disposed at the top of the base pipe within a valve stem post, which can be rotated selectively to block the inlet leg (closed position) or open it (open position). A metering peg extends from the valve stem post into a receptacle in the valve seat. Inlet and outlet passages corresponding to the inlet and outlet legs are disposed above the seat, and a float located at the top of the inlet passage allows fluid flow from the inlet passage into the outlet passage in the open position while blocking fluid flow from the outlet passage to the inlet passage in the closed position. Vent passages are provided above the float to enable communication of the outlet passage to atmosphere in the closed position. A handle is provided on the valve stem post to selectively rotate the latter to place the valve in open or closed position.

Abstract: A mixing valve for a faucet has a ball valve (16) mounted for pivotable motion about a longitudinal axis (76) and a second perpendicular axis (86) that is fixed with respect to the pin (84) that extends through the spherical section (42) of the ball valve. Distal ends of the pin are connected to a collar (46) that is fitted about the spherical section (42). The collar has cam stops that abut an edge (102) of the upturned flange (104) of the seating ring (48). The spherical section (42) has inlet openings (90,94) that are configured with convex and concave sections to produce a desired flow pattern.

Abstract: An offset hinge flapper valve has a single valve plate rotatably mounted in the flow channel of a cast housing. The valve plate is freely rotatable about a pivot pin welded to the housing. The valve plate has first and second co-planar parts extending on respective sides of its axis of rotation, which is offset from the center axis of the flow channel. These co-planar parts have peripheral edges configured so that the valve plate has the same shape as the shape of the flow channel taken along an oblique section of the cast housing. A brace having an abutment surface is mounted on the valve plate. When the valve plate rotates to a predetermined inclined angle relative to the flow, the brace contacts the housing, thereby blocking further rotation and preventing flutter or instability of the valve plate in the open position.

Abstract: A valved drain plug apparatus having a valve body with a bore extending therethrough and an opening along a surface extending into the bore, and an insert element rotatably mounted within the bore of the valve body. The insert element has a hole along one surface. The insert element is movable between a first position in which the hole is aligned with the opening and a second position in which the insert element closes the bore of the valve body. The insert element has a generally tubular configuration being open at one end and closed at another end. A key member is detachably received by the insert element. The key member serves to rotate the insert element between the first and second positions. The key member includes a body member having an interior passageway extending therethrough and in communication with the bore of the valve body. The key member also includes a key extending upwardly from the body member so as to engage a key slot formed on a surface of the insert element.

Abstract: An automatic selector device for multi-gear change-speed gearbox includes a multi-way valve which can be driven into several valve positions each associated with one gear by a stepper motor whose operation depends on an electronic control unit. Each of the valve positions causes the appropriate gear to be selected. The multi-way valve is connected kinematically to a selector unit which can be actuated manually in order to block gears through the intermediary of a stop and an opposing stop.

Abstract: A ground hydrant includes an elongated hollow water flow pipe positioned from above the ground to below the frost line in the ground, a flow control valve, and a housing which mounts the flow control valve at a position below the frost line in the ground. The flow control valve has a spherical body with an approximately right angle flow bore through it and a hollow extension tube disposed in flow communication with the flow bore and projecting outwardly from the body and coupled in flow communication with the lower end of the flow pipe. The housing mounts the flow control valve extension tube and spherical body for rotation about the longitudinal axis of the flow pipe between opened and closed positions in which flow communication is respectively permitted and prevented from a pressurized supply of water to the flow tube via the flow bore and extension tube. The flow control valve is rotatable between the opened and closed positions by rotating the flow pipe about its longitudinal axis.

Abstract: A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position open and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the flow path to allow fluid flow therein. Means are provided for altering the effective area distribution of the valve member about its pivot axis in order to effect pivotal movement of the valve member in response to fluid dynamic flow forces. An actuator carried upon the valve member cooperates with the duct to forcefully effect initial opening and final closing movements of the valve member.

Abstract: A quarter-turn, on-off plug valve having a valve body provided with a recess opening through a first portion of the body and closed at the opposite end by an integral portion of the body. A pair of stops are provided on a stem portion of the plug for accurately limiting the rotation of the plug to the 90.degree. different open and closed positions of the valve. The stops are defined by flat surfaces engaging a cylindrical retaining pin extending chordally through an upstanding annular wall portion of the body so as to provide improved accurate positioning of the plug in the open and closed positions of the valve.

Abstract: A push-type, lightning-protected fuel tank drain valve has a non-conductive plastic poppet that cannot be pushed upwardly axially far enough to open its port until the poppet is first rotated about its axis.

Abstract: Herein disclosed is a four-way valve for switching the cooling and heating modes of an air conditioner. The four-way valve includes: a first valve body of a cup shape having its closed wall formed with an outlet port and two circuit ports. A second valve body is provided having its root fitted fixedly on the first valve body and an inlet port formed at the side opposite to the body root. A cylindrical valve member is fitted rotatably in the first valve body having its one half formed in its end portion with an arcuate groove for providing alternate communication between the outlet port and the circuit ports and its other half formed with two communication ports. A member is provided for restricting the rotations of the cylindrical valve member. A magnetic member is provided for magnetically rotating the valve member when energized. A collar is disposed on the valve member and made irrotational but movable in the axial direction.

Abstract: Plug-type angle valve comprising a valve body and a unitary valve plug formed of a plastic material. The valve body has upper and lower trunnion seats and at least two fluid ports, one being a control port located at a position intermediate the trunnion seats. Another of the ports is an angularly displaced lower port extending through the lower trunnion seat. The valve plug has upper and lower trunnion sections journaled in the trunnion seats and an intermediate spherical control section between the trunnion sections and located adjacent the control port. A control passage extends from a lower opening in the valve plug aligned with the lower port to a second opening in the intermediate section of the valve plug.

Abstract: A water faucet valve is mounted within a faucet body, in which the faucet body is threaded together with a collar, and the water faucet valve is applied below a handle. The water faucet valve comprises a cap, a valve element and two O-rings. The cap has a hole, a raised channel with a pair of lugs provided below and contacting the raised channel, a groove, and an arced protuberance on the bottom end of the cap. The valve element has a control rod with a tubular member mounted on, and a circular base. The circular base has an arced channel for receiving the arced protuberance, a first outlet port and a first inlet port.

Abstract: A faucet valve comprising a removable cartridge which snaps into place, a taper-shaped insert that keys into a valve body and which fits tightly into a tapered annular ring. The lower portion of the cartridge has an external stop spanning over 90 degrees for stable stoppage of the faucet handle. The cartridge snaps together with the insert so that it can't fall out or become disengaged during assembly or normal usage. The insert has two straight projection keys which lock it into place on the valve body (i.e. prevent it from rotating on the valve body). The insert is tapered on its lower end so as to fit securely into a tapered annular ring. A locking cap secures the insert, and the pieces therein, in place vertically on the valve body.

Abstract: A matte box assembly for a movie camera wherein a front frame is slidably and pivotally supported from iris rods extending from the camera parallel to the lens. A plurality of filter holder modules are provided with mating dovetail slots on their front and rear vertical surfaces for allowing quick assembly and disassembly of any number and type of filter holder modules to each other and to the frame. A light shield module is similarly assembled to the filter holder modules by dovetail slots and fits over the lens in the camera-ready position of the matte box assembly. Locking mechanisms releasably attach each module to the next adjacent module for maintaining alignment and position. One or more of the modules may have a rotatable construction for rotating the front relative to the back.

Abstract: A ball valve in which the ball of the valve is positively prevented from blowing out of the valve body in both directions, even if the valve is connected in the wrong direction or the fluid pressure is applied to the valve in the opposite direction. The ball is arranged in a valve body to selectively open and close a fluid passage in the body, and annular seals abut against the ball from both sides of the fluid passage, the annular seals being pushed towards the ball by seal carriers. In one embodiment, one of the seal carriers has a flange on the periphery of one end thereof, and the flange is locked to a step from inside which is formed on inner surface of one end portion of the valve body. In a second embodiment, the ball additionally has two grooves with abutting walls in respective ones of which a spindle and a pin coaxial with the spindle are fitted with the abutting walls positioned on the side of the one seal carrier.

Abstract: A ball valve connector of the frangible crashworthy type wherein two fluid flow connector body halves are interconnected by fracturable elements. Each body half includes a ball valve within a flow passage pivotally mounted on diametrically located pins. The pivot pins and valves are capable of displacement in the axial direction of fluid flow to compensate for manufacturing tolerances and provide maximum sealing characteristics. Each valve is rotatable 90.degree. between open and closed positions, and a stop projection defined on each valve cooperates with a spring biased stop ring providing positive retention of the valve in the closed position.

Abstract: A self-contained, unitary mixing cartridge for use in hot and cold water faucets for manually selecting the mixture-proportions and flow-rates of water supplied from separate hot water and cold water inlets to a common outlet, comprises an outer housing, an inner housing, a lever pivotably mounted in the inner housing and having an outer end projecting through the top wall of the outer housing for coupling to the faucet handle, and a slide valve within the inner housing and coupled to the inner end of the lever.

Abstract: A two-way selector valve for a vehicle seat inflation device is disclosed. The selector valve includes a first input passageway connected between a source of pressurized air and a valve body chamber. The selector valve further includes second and third passageways which are connected between the valve body chamber and respective output conduits. Each of the output conduits is connected to a respective pneumatic chamber formed in the vehicle seat. A valve plate having first and second apertures formed therein is disposed within the valve body chamber. The valve plate is rotatable between first and second positions so as to selectively provide communication between the first passageway and a selected one of the second and third passageways. A relief valve is provided adjacent the valve plate for deflating the selected one of the chambers.

Abstract: A rotating gate valve for access to vacuum chambers, and the like, employs a rotating gate member which is alternatively aligned to cover or to uncover a slot in a concentric valve body, the ends of which are sealed and serve as supports for a shaft. Eccentric lobes on the shaft engage corresponding cam surfaces on a gate member causing it to be urged into high force contact with the body when sealing of the chamber is desired.

Abstract: There is disclosed a ram type blowout preventer in which the chambers in which the rams are received and for movement between opened and closed positions are automatically vented to the bore of the preventer housing above the closed rams, as the rams are moved to open position, in order to equalize pressure across the ram and thus facilitate its opening. When the rams are moved to closed position, this vent is closed so that well pressure beneath the closed rams has access through a groove between the ram and the ram chamber to the chamber behind the closed rams so as to assist operating fluid in maintaining them closed. The stem which connects a piston of a hydraulic system for operating the rams is hollow and so arranged as to be pressure balanced whereby there is substantially no force due to well fluid pressure resisting closing movement of the rams due to the extension of the rod sealably through an opening in a wall separating the ram chamber from the cylinder of the hydraulic system.

Abstract: This new plug type faucet valve assembly of the present invention particularly adapted for use in plumbing fixtures, for dispensing and, or mixing hot or cold water into lavatory sinks, vessel and the like, herein being disclosed. The preferred embodiment comprises a generally cylindrical body, having a vertical inlet port eccentrically placed from the bottom extending upward into a central cavity, and a horizontal discharge port through the side wall, wherein said ports are being interconnected at a right angle, by two intersecting blind bores in a cylindrical plug rotatably disposed therein to form a passageway through the faucet valve. Said plug comprise seals circumferentially disposed in respective grooves thereon, and having a trust bearing plate sealably co-acting with the inlet port seal at the bottom of said cavity, to protectively separate the planar surfaces of said plug and said cavity, forming a leak-proof connection therebetween.

Abstract: This invention is directed to a drain construction for a radiator (10) and is built generally as follows. A header (12) includes a drain area (16) which is used to drain fluid from the interior of the header when so desired. The drain area includes a first annular pipe (24) extending into the interior fluid handling portion (20) of the header as well as a larger diameter second annular pipe (30) extending outwardly from the header. The two annular pipes are plugged by a plug (40) which has a lower portion (42) and an upper portion (44). Passageways (56, 58) are provided through the plug in order to facilitate draining of the header. When the plug is rotated to its proper position with the passageways in alignment with a passageway (38) of a third annular pipe (36), fluid may be drained from the radiator. When these passageways are not aligned, fluid is contained within the header.

Abstract: To provide a railway tank car mounting flange which does not extend more than one (1) inch below the tank bottom, fixed stops to prevent rotation of the valve closure during movement between open and closed positions, and fixed stops which determine the amount of travel of the valve closure between open and closed positions are located within the tank. The valve closure is provided with outwardly extending stops which engage the fixed stops within the tank. Preferably the fixed stops extend inwardly and upwardly from the mounting flange. Preferably the valve closure is bench assembled onto a removable valve seat and is installed into the tank from the bottom, avoiding the need for a workman to be located within the tank during installation.

Abstract: A butterfly valve disk is rotatably mounted within a passageway formed in the valve body and an annular seal fitted in the valve body projects within the passageway. A peripheral annular bearing surface formed on the valve disk is applied against the annular seal in the closed position. The valve disk carries a stop which is brought to bear on an internal surface of the valve in order to prevent rotational displacement of the valve disk beyond its normal position of closure.

Abstract: A rotary lift-turn type plug valve mechanism includes a valve body and bonnet structure defining a tapered valve chamber that receives a tapered plug member which is operated by linear and rotary components of movement to achieve valve operation. Externally adjustable plug positioning means is provided by the valve mechanism to enable the position of the plug element to be adjusted relative to the inlet and outlet flow passages defined by the valve body. Plug dampening means is also provided for applying a dampening force to the plug element to prevent slamming of the plug upon reaching the end of a rotational component of movement. A valve actuator is also provided that operatively engages the valve stem of the plug and is capable of imparting both linear and rotary components of movement to the valve stem for unseating, rotating and reseating the valve element within the valve chamber.

Abstract: A drain valve for use in a fuel tank and having a drain port and an axially movable poppet or valve member. The valve member has a first position for closing the port, a second position for opening the port to permit draining of liquid from the fuel tank, and a third position wherein the valve member is lowered to expose a seal thereon for inspection or replacement. A valve stem is connected to the valve member and has a pin with ends projecting therefrom. A retainer assembly comprised of two identical, interfitting retainer members has slots for receiving the ends of the pin and surfaces for supporting the pin and, in turn, the valve member when the valve is either opened or closed.

Abstract: An improvement in a flow control device for permitting fine adjustment of flow rates of fluid in tubing and maintaining established rates of flow. The device includes a clamping member pivotally mounted adjacent a clamping surface and a tubing-engaging surface on the clamping member which progressively closes the orifice of tubing as the clamping member is rotated in one direction. Coacting means on the clamping member cooperate with actuating means on a force-inducing member mounted for rotational movement on the body of the device. The coacting means is located at a point from the point of pivotal attachment of the clamping member which is at least twice the distance from the pivotal attachment to the tubing-engaging surface. Thus a large movement at the coacting point translates into a small movement of the tubing-engaging surface and results in fine adjustment of flow rates.

Abstract: A rotary lift-turn type plug valve mechanism includes a valve body and bonnet structure defining a tapered valve chamber that receives a tapered plug member which is operated by linear and rotary components of movement to achieve valve operation. Externally adjustable plug positioning means is provided by the valve mechanism to enable the position of the plug element to be adjusted relative to the inlet and outlet flow passages defined by the valve body. Plug dampening means is also provided for applying a dampening force to the plug element to prevent slamming of the plug upon reaching the end of a rotational component of movement. A valve actuator is also provided that operatively engages the valve stem of the plug and is capable of imparting both linear and rotary components of movement to the valve stem for unseating, rotating and reseating the valve element within the valve chamber.

Abstract: A ball valve in which cams (82, 84) are mounted on the ball member (34) to engage spring biased seat rings (30, 32) and cam the seat rings to a retracted position at which the seat rings are retained. The ball valve has a removable cover plate (16) so that the ball member (34) and seat rings may be subsequently removed from the valve body (12) while the valve remains in-line. A removable stop (56) engages and blocks rotation of the ball member past its fully opened and fully closed positions and the cams (82, 84) engage the seat rings only after the stop is removed and the ball member is rotated past its normal stroke and beyond fully opened or fully closed positions.