Abstract: A quarter-turn plug valve has an inverted and tapered frustoconical body cavity and plug. The valve body has a through-flow passage with ports opening into said body cavity. The tapered plug has a valve stem and a throughflow passage. The valve seats surround the ports and extend from the walls of the tapered valve cavity toward the plug. The plug, when seated in closed position, is in physical contact only with the annular tapered faces of the valve seats. The valve stem contains acme or square threads near the bottom to engage with a bonnet threaded at its lower end. The bonnet extends axially along the valve stem and has a projecting flange near its midpoint, which seats on a gasket placed between it and the valve body flange. When the plug is properly oriented in closed position, the adjustable bonnet is turned on the threads of the valve stem with the stem fixed until it seats on the valve body with the desired downward thrust.

Abstract: A removable cartridge type valve is provided which has a minimum number of parts yet affords right and left hand conversion for cold and hot water usage in the same valve. A cross shaped groove is provided on the top of the movable disk, and the stem selectively is inserted into one or the other arm of the groove. The valve also provides a secure fitment of the valve stem in the valve body through the use of a grooveless type retaining member. Further, any tendency for bottom gasket members to be forced down out of the valve housing is eliminated by the use of an L-shaped gasket. Binding is also reduced by thinning the gasket adjacent the intersection of the arms of the L on the gasket.

Abstract: A gas tap for a gas cooker or hob includes a rotary disc valve (20) which controls the flow of gas from a gas rail (1) to a gas burner of the cooker or hob. To simplify the tap construction and facilitate manufacture, an external surface (2) of the gas rail (1) is used to form part of the tap housing and to provide the seating surface for the disc valve (20).

Abstract: A mixing valve assembly includes a housing and a mixing valve positioned therein, with the mixing valve having a mixing member extending outwardly therefrom. A stop tube is positioned about the housing and there is a control element attached to the mixing member to vary the temperature of water discharged from the mixing valve. There are cooperating means on the stop tube and control element for limiting rotation of the control element and mixing member. An adjustable temperature stop sleeve extends within and is interlocked to the stop tube with the sleeve having a projection thereon which can be variably positioned for contact by the control element for limiting temperature adjustment movement thereof.

Abstract: In this invention, two connecting devices are provided in a burner device to accommodate liquefied gas cylinders/fuel tanks having different mounting cap configurations. The invention also includes a piezoelectric ignition device as part of the burner device for igniting gas provided by the liquefied gas cylinder/fuel tank.

Abstract: A service valve includes a valve body (12) having an upper chamber (18), a lower chamber (20), an open top end (22) and an open bottom end (24). The lower chamber (20) includes an inlet opening (26) and an outlet opening (28). A valve member (14) is disposed in the valve body (12) and is molded of plastic material to form a unitary body including a plug portion (36) having a flow passage (38) therethrough and an actuator portion (34). The plug portion (36) is rotatable in the valve body (12) between an open position where the flow passage (38) is aligned with the inlet (26) and outlet (28) openings and a closed position where the flow passage (38) is out of alignment with the inlet (26) and outlet (28) openings. The actuator portion (34) extends outwardly from the plug portion (36) through one of the chambers (18, 20). First ( 50) and second (51) seals act between the plug portion (36) and the valve body (12) for sealing against leakage from the inlet opening (26) and outlet opening (28).

Abstract: An improved valve apparatus and a method of operation thereof having a spring retainer member means suitable for accommodating a spring means therein for operably coupling thereabove a pipe coupling body means are disclosed. Inside the pipe coupling body means is a ball headed member means having an aperture passing therethrough for blocking off or allowing passage of medium through the pipe coupling body means. The spring retainer member means is turned in one direction in order to allow unimpeded passage or to control the amount of flow thereof of said medium and can be rapidly and efficiently sprung back to its original position in order to completely block off the passage of said medium through the pipe coupling body means for a rapid and efficient "on-off" control thereof.

Abstract: A latching device for the actuator in a valve installation. The actuator includes a handle for rotating a valve stem and a latch slidably mounted on the handle. The latch has one edge which abuts a stop when in the closed position and an opposed, angularly disposed, camming edge facing a stop at the open position.

Abstract: A fluid control valve stem extension and locking device includes a rod member to extend the valve stem with a lower end bored and threaded to threadably engage the exposed end of the valve stem with set screws extending horizontally into the bore opening to bear on the sides of the valve stem, the upper of the extension rod shaped to duplicate the shape of the exposed end of the valve stem and a detached plate having a hole shape to interfit over the exposed end of the valve stem coupled to move with turning of the valve stem and including a stop device duplicating the function of the stopping device used in the valve with a locking mechanism including a cylindrical tube sized to interfit over the stem extension device with an attachment plate structurally attached to the lower end of the tube with a horizontal radial plate structurally attached to the outside surface of the upper end of the tube with two holes corresponding to the valve positions and a locking plate with an opening to interfit over the shape

Abstract: A non-rise faucet assembly including a body 12 having a bore 14 therethrough. The bore includes a fluid inlet end 16, a valve stem chamber 17, a valve seat 19 and a fluid outlet 22. A valve stem 29 is rotatably mounted in the bore with a valve means 33 in engagement with the valve seat. The degree of rotation of the valve stem is controlled by a valve stem rotation restricting means 43 to define the fluid flow open and closed positions of the valve. A locator cap 51 is provided having a first abutment means 52 in axial thrust transmitting engagement with the valve stem and a second abutment means 53 in engagement with said body for limiting the amount of axial thrust transmitted to the valve stem by the first abutment means 52 to a predetermined optimum amount. A retaining means 76 is releasably secured to the body 12 to apply axial thrust to the first abutment means.

Abstract: The present invention relates to an improved faucet structure which is changing the conventional manner of vertical, up-and-down, spiral control of turning on and off water flow into the novel manner of plane rotary control, the entire opening and closing of the faucet can be achieved via rotating about 90.degree. thereof. Therefore, the operation is much more convenient and laborsaving as well as durable and practical than ever before since the rubber washer subject to more even force is uneasy to be damaged.

Abstract: An angle cock which is capable of functioning in a left-handed mode or in a right-handed mode. The angle cock is a ball valve having a ball which is located within the curity of a housing, a valve stem and handle for selectively moving the ball to an open position and one of two closed positions, and a locking device for releasible locking the handle in the open position or in either of the two closed positions.

Abstract: A plastic service valve includes a valve body of molded plastic having upper and lower chambers. The valve body is open at the top and bottom ends. The lower chamber includes inlet and outlet openings. A thrust seat is formed within the upper chamber between the open top end and the inlet and outlet openings in the lower chamber. A valve member is disposed in the valve body and positioned against the thrust seat. Structure is provided in the valve member and adjacent to the thrust seat for locking the valve member to the valve body. The valve member is molded of plastic material to form a unitary body including a plug portion and an actuator portion. The plug portion is rotatable in the valve body between an open position which is aligned with the inlet and outlet openings of the lower chamber of the valve body and a closed position. The actuator portion extends upwardly through the upper chamber portion and receives an operating nut.

Abstract: A mixer valve has a valve cartridge arranged in interchangeable manner in a valve casing. A fixed control disk and a movable control disk can be moved counter to one another by an operating element in said valve cartridge. The latter has a roughly tubular casing, which is closed on the outside by a cup-shaped sleeve and on the inside by a cartridge bottom. As a result of this construction, the cartridge can be replaced particularly easily.

Abstract: A ball valve assembly employing valve seats which are constructed of teflon and form part of end seal members, with the teflon valve seats being of a thin and deformable arrangement backed by an elastic loading ring which is isolated from the liquid. The valve ball is floatingly mounted between the opposed valve seats so that the ball automatically centers itself onto the opposed valve seats to ensure a proper sealing engagement therewith.

Abstract: A dual position handle and cam stop assembly is provided which is adapted for limiting rotational movement of an associated valve sealing element such as a ball for a ball valve. However, the assembly is applicable to other types of valves such as butterfly and plug valves. The assembly comprises a cam disc and a valve handle having associated first and second handle stop and direction indicators. The indicators are disposed relative to the cam disc for engagement against the disc at first and second handle stop limit locations, respectively. The locations are selectively positionable by rotation of the cam disc while maintaining a constant relative angular spacing for limiting the rotational movement of the valve handle to the constant relative angular spacing. The cam disc has a cardioid-like contour about its peripheral wall for a constant angular displacement of the stop limit locations per a unit degree of cam rotation.

Abstract: A device at mixing valves for liquids for example hot and cold water, and of the kind that comprises a valve housing (11), which is provided with an outlet (21) and an inlet (20) for each of the liquids, an operating member (13) for regulating the amount and temperature of the liquid flowing out through the outlet, the operating member being designed as a double-armed lever rotatable about a vertical as well as a horizontal axle (16) and the longer arm of which consists of a handle extending outside the housing (11) and the shorter arm of which consists of an actuator (15) arranged inside the housing, arranged to co-operate with a valve member (18), at which said actuator is provided with a stop part (23) co-operating with a stop face (24) for limiting the maximum out flow of liquid.

Abstract: A valve actuator for providing rotational drive to a valve through a valve stem, where the valve includes a flange with attachment bolt holes for attachment of the actuator thereto using bolts. The actuator has an outer body having a sidewall and a base end position toward the valve flange, a rotatable output drive member accessible from the base end and adapted for coupling to the valve stem and having rotational end limits, and an attachment base fixedly attached to the body toward the base end and having a base flange and an attachment lip. The lip is attached to the base flange and is spaced apart from the body sidewall to define an annular space therebetween. A plurality of clips are positioned about the lip to secure the body to the valve flange while allowing selective rotation of the body to adjustably set the rotational end limits of the output drive member relative to the valve.

Abstract: An adjustment water temperature safety control unit (40) includes a pair of control valves (42, 44) interconnected by meshed control gears (100, 106) for opposite inversely proportional actuation responsive to a single control knob (78). The desired maximum hot water temperature and/or the desired minimum cold water temperature can be set by means of adjustable clips (104, 110) on the gears (100, 106), which are located behind a removable panel (26). Volumetric flow rate of the mixture is controlled by at least one valve (56) and control knob (64).

Abstract: A ball valve is disclosed having an improved seat ring particularly adapted for sealing a ball member in an end-loaded or top-loaded valve body. The ball is mounted for selective rotation and limited axial movement in a valve body passageway. The seat rings are disposed on diametrically opposite sides of the ball about valve inlet and outlet openings. Frusto-conical disc springs interposed between each seat ring and an associated valve body shoulder urge the seat rings into engagement with the ball. A rigid reinforcing ring is disposed intermediate of the flexible seat ring for integral movement with the seat ring and for reinforcing the seat ring against collapse under pressure. The reinforcing ring is received in an annular channel about the periphery of the seat ring and preferably comprises a split metal ring in a stressed and expanded condition.

Abstract: A rotary metering valve (10) includes a pair of windows (145, 200) in mutual registry with one another, the windows defining a flow passage through the valve. The geometries of windows are such that closing the valve sweeps contaminants trapped therein, inwardly, thereby enhancing the effectiveness of the output torque of the valve's actuator (75) in breaking apart the contaminants for subsequent removal by flow through the valve.

Abstract: The invention comprises an improved override and an interrelated valve system. A main valve has an actuator, the actuator in turn having a control for communicating a control signal to the actuator for selectively causing the actuator to place the main valve in its open or closed position. The override is associated with the main valve and selectively shiftable between an engaged mode in which the override is operatively connected with the main valve for moving the main valve between its open and closed positions, and a disengaged mode in which the operative connection between the override and the main valve is interrupted, whereby the main valve may move independently of the override. A shut-off functionally interconnects the override and the actuator control and is operative, upon shifting of the override to its engaged mode, to block the control signal from the actuator.

Abstract: An actuating device for a mixing valve having a valve housing and a movable valve member includes a hand lever which is partly accommodated within a housing and operatively connected to the valve member. The hand lever is movable about two axes perpendicular to each other and is provided with an arc which projects through a slot into the interior of the housing. In order to minimize the size of the slot and to obtain an attractive visual appearance, the arc is provided with an inner contour aligned with the respective housing portion and having a radius extending from a fixed point of one of the axes.

Abstract: A non-rise faucet assembly including a shank having a lower end through which fluid is introduced and also having an upper end with a chamber in fluid communication with the lower end. A removable stem adapted for insertion into the chamber and having a lower end forming a movable valve in the chamber is provided to permit regulated flow of fluid through the faucet assembly. The stem has an axis of rotation about which the valve is movable in response to non-rising rotation of the stem within the chamber in the shank. One of the shank and the stem has a bore arranged generally transversely of the axis of rotation of the stem and the other of the shank and the stem has a pair of diametrically opposed slots in alignment with the bore after the stem has been inserted into the chamber in the shank. The slots and the bore define a continuous passageway through the shank and the stem.

Abstract: The invention relates to a sequentially controlled water mixer comprising a valve housing (1) with a cold water inlet connection (2) and a hot water inlet connection (3), and a common outlet (4), said casing defining a mixing chamber (5) between the inlets and outlet with a regulating chamber (6) located on the inlet side for housing an adjustable regulating switching valve (7) of substantially rotationally-symmetrical shape and with regulating apertures (8,9), said valve being adjustable to seal-off the inlet connections (2,3), or to control flow through the connections via said apertures (8,9). According to the invention the said inlet connections define recessed holes of larger dimension than respective hot and cold water pipes to be used therewith, and each hole accommodates a compression spring (27) and a seal (28) loaded by the spring to rest in contact with said switching valve (7) via a sealing surface which follows the contour of said switching valve.

Abstract: A compact, regulated gas flow control valve includes a valve body having a clamp for securement to a high pressure gas cylinder. An inlet at one end receives the high pressure gas from the cylinder. A piston-actuated regulator drops the high pressure to a low pressure, maintaining the low pressure at a substantially constant delivery value. An outlet and a flow control selector knob are located at the other end of the valve body. The knob selects a preselected flow rate for delivery of the low pressure gas by the outlet. The knob controls position of a rotor carrying a plurality or precalibrated flow control orifice inserts, the knob being rotatable but with positive detenting for orienting the rotor to permit flow only through a selected one of the orifice inserts for delivery by said outlet. The sequence of orifice inserts defines a preselected schedule of different flow rates upon rotation of the said selector knob.

Abstract: A fluid pressure actuator (1) having two pistons (5,6) and a associated toothed rack portions (7,8) for activating an actuating member (10) via a toothed wheel (9) enables the piston positions to be adjusted, both in the full-strokes position of the actuating member (10) and in its zero-position. To this end, one end-wall (4) of the actuator has provided therein an adjusting screw (16) which engages the one piston (16). The piston, in turn, is provided with an adjusting screw (17) which engages the rack portion (7) of the opposing piston (5). This latter adjusting screw (17) can be reached through a plugged entry port (4d) in the end-wall (4).

Abstract: Handle assemblies for fluid control valves are described that can be operated from various positions and in either direction of rotation to open and close 90.degree. operating valves. A detenting element passes through a selectable one of a plurality of notches in a handle arm to engage fixed stops on the valve and sets limits at various positions depending on the selected notch.

Abstract: A fluid-powered rotary actuator for providing end-limited rotational drive to another device, having a splined output shaft rotatably supported within a body and a drive end coupled to the other device; a linear-to-rotary transmission providing relative rotational movement between the body and the shaft, the transmission including a piston for application of fluid pressure to first and second side thereof to produce linear movement of the piston in first and second opposed directions which movement is translated into rotational movement of the shaft; a threaded body end cap adjustable from an end of the body remote from the drive end to permit selective longitudinal positioning of the cap relative to said body, and having a stop surface for engaging the second side of the piston and limiting its travel in the first direction; and an elongated sleeve adjustable from the remote end and extending from outward of the cap at the remote end to beyond the piston, and having a stop shoulder for engaging the first sid

Abstract: An improved lever head for a single handle mixing faucet of the type wherein the hand lever is brought out of the body at right angles to the valve slides is described. Volume adjustments are made by swiveling the handle from side to side whereas mixing adjustments are made by rotating the hand lever about its longitudinal axis.

Abstract: A valve includes a molded plastic body portion having an internal chamber with upper and lower portions. Fittings connect the valve to conduits of a piping system. A valve seat surrounds inlet and outlet openings in the chamber lower portion. A plastic plug member is rotatably positioned in the valve seat. The plug member is a molded unitary element. The valve body portion and plug member have a substantially uniform wall thickness throughout. The plug member includes an integral plug portion and an actuator portion which facilitates ease of disassembly of the valve for repair. The plug portion has a flow passage which communicates with the inlet and outlet openings in the valve seat and is rotatable between open and closed valve positions. Seals retained on the plug portion engage the valve seat in the closed position. The actuator portion includes shearable stops which permit 360.degree. rotational operation of the plug member upon failure of the stops under excessive torque.

Abstract: A valve body forms flow passages at longitudinally opposite sides of a stopper to be brought into communication through the stopper when the stopper is rotated from closed to open positions, the body having a side opening. To rotate the stopper there are provided:(a) a sleeve adapted for reception in the side opening, the sleeve having retainer structure to interfit shoulder structure on the body for blocking rotation of the sleeve in the side opening,(b) a crank received in the sleeve for rotation therein, thereby to rotate the valve stopper, and(c) interengageable stop shoulder structure on the crank and sleeve to limit rotation of the crank and the stopper at stopper open and closed positions.The retainer structure typically includes two tangs projecting in spaced apart relation for reception in grooving in the body.

Abstract: A spring-locking handle mechanism in which a flat piece of spring stock is formed in a generally U-shaped configuration to provide a locking spring, one leg of which bears against the underside of the socket portion of a conventional two-piece locking handle, and the other leg of which bears downwardly on the upper surface of the handle portion. The spring legs must be spread apart in order to assemble the spring with the handle mechanism and are thus normally under tension, so that the handle portion is biased in its downward or locking position relative to the socket portion to discourage unintentional lifting. The width of the one leg corresponds to the distance between the depending locking lugs on the handle portion so as to fit snugly therebetween in both the locked and unlocked position of the handle.

Abstract: A fluid delivery control in agricultural crop spraying vehicles and the like for precise preset return to an adjusted open positioning of a by-pass and shut-off valve remote from the driver platform, cab and seat, whereby variation in engine-pump speed is compensated for and fluid spray adjusted while operating the vehicle.

Abstract: In the preferred and illustrated embodiment, a multivalve manifold control and interlock system is set forth. The multivalve manifold comprises three valves arranged within a valve body, wherein valve stems with optional handles are located above the valve body to be gripped and rotated. The valve body encloses three ball or plug valves. They are switched by 90.degree. rotation. Each stem supports a circular disk, and the three stems are equipped with three circular disks which interlock. Certain arcuate notches are cut in the circular disks. The arrangement of the notches limits the sequence in which the valves are opened and closed. Moreover, opening and closing is constrained to the sequence required for safe operation of the multivalve manifold. Further, a lock bar is incorporated, and is profiled to fit with the valve stems for locking.

Abstract: A shower control consisting of a ball valve mounted into a shower arm and being activated by a rotatable device attached to the ball valve. The flow of mixed water through the shower head can be stopped or allowed for economical and convenient reasons by pulling continuously a beaded chain which operates the device and furthermore the ball valve.

Abstract: A mixing valve adapted for proportioning hot and cold water and for initiating and terminating flow. The valve body has fluid passages terminating in spaced apart hot and cold water inlet ports and an outlet port to a circular valve seat. A generally cylindrical closure member is rotatable about its axis within the valve body with one end overlying the valve seat so as to cover and seal the inlet ports in a closed position. The closure member has a particularly configured recess such that upon rotation of the closure member from the closed position the recess progressively overlies and seals the inlet ports to initiate and provide a mixing of flow. A sequence of flow from cold to warm to hot is assured by a stop which is adjustable to preset a maximum temperature of outlet flow. The closure member can be easily modified for installations where the hot and cold water inlet pipes are reversed from their conventional relative positions.

Abstract: A fluid valve controls the delivery of fluid through a passageway by employing a novel valve construction in which a channel within the passageway is adjusted both in size and configuration. A resilient, flexible valve element defines the channel, and the valve element may be adjustably and incrementally compressed to obtain a gradual restriction in the passageway. By adjusting the size of the channel the rate of fluid flow may be controlled. The fluid valve may be used, for example, to control the amount of dampening fluid supplied to the ink roll or offset plate on the plate cylinder of an offset printing press, and will find application in any fluid delivery system where precise control of fluid flow is crucial.

Abstract: A three-passage valve comprising (1) a body with a main passage (10) and two secondary passages (12,13), each of the secondary passages being fitted with a respective closure member (2,3) and the valve as a whole being provided with a single, common actuator unit (6) to operate the closure members in such a manner that the valve can occupy any one of three positions: a first position in which the main passage is in communication with a first one of the secondary passages while the other secondary passage is closed; a second, or intermediate, position in which both of the secondary passages are closed; and a third position in which said first passage is closed while the main passage is in communication with said other secondary passage.

Abstract: A handle for a magnetically actuated valve which bears rotating and fixed indicia for reading the valve position. The rotating indicia is placed upon a jacket carrying drive magnets. The fixed indicia is placed upon a cap covering the exposed end of a nonmagnetic bonnet separating the drive and driven magnet assemblies. External stop means prevent rotation of the jacket relative to the cap and bonnet more than about 90.degree.. Internal stop means prevent the rotation of valve and driven magnets more than about 90.degree..

Abstract: A safety locking arrangement is provided on a valve for control of fluid flow comprising a valve body having a seat with a flow passage passing therethrough and a valve closure member located within the body. The valve closure member is adapted to engage the seat to effect closure of the valve. The valve closure member is carried by a cap adapted to enter into screw-threaded engagement with the valve body at the mouth thereof. To ensure retention of the cap on the body, the cap additionally enters into screw-threaded engagement with an annular retaining means disposed around and formed separately from the valve body, with the valve body itself being so formed in the mouth region that the retaining means cannot be withdrawn therefrom merely by rotation and/or displacement lengthwise of the valve body.

Abstract: Improved valve mountings with rotational limiting stops for self-closing breakaway valve assemblies comprising two frangibly connected valve housings each having a rotatable valve member and trigger means holding the valve members open until the valve housings separate. The rotatable valve members have slotted trunnion shafts respectively rotatably received in trunnion bearings mounted to the valve housings. A coil spring is deployed about each trunnion shaft and has one tang end received in the slot of the trunnion shaft to bias the rotatable valve member to its closed position. Indicator shafts keyed with the trunnion shafts are rotatably mounted in the trunnion bearings, the ends of the indicator shafts being exposed to indicate the positions of the valve members.

Abstract: A molded polyethylene valve body has a conduit portion and an annular portion extending upwardly from the conduit portion. A passageway extends through the conduit portion for the conveyance of fluid. A valve seat is formed in the conduit portion by a metal sleeve that is molded in the valve body to prevent separation of the sleeve from the valve body during sustained pressures. O-rings positioned in grooves around the metal sleeve are compressed by the plastic material during the molding process to effect a seal between the sleeve and the plastic valve body. An annular rubber sleeve insert is vulcanized onto the inner diameter portion of the metal sleeve. A plastic valve disc is centrally positioned in the conduit portion within the periphery of the rubber sleeve insert and is arranged to sealingly engage the rubber sleeve insert when the valve is moved to the closed position. A metal stem extends through the annular portion of the valve body and is connected to the valve disc.

Abstract: A control valve with a three part, all plastic housing having an access opening through which a slide extends for operating the plastic valve element toward and away from the valve seat, the plastic valve element having an integrally molded plastic diaphragm clamped between parts of the all plastic housing and traversing the entire access opening, the slide being operated by a rotor, there being ramp shaped surfaces on confronting faces of the rotor and slide, and an adjustment nut for locating the rotor, slide and valve element relative to the valve seat.

Abstract: A packless magnetically actuated valve. A driven magnet assembly is rotatably mounted inside a nonmagnetic bonnet. A drive magnet holder surrounds the bonnet and rotates thereon. The driven magnet assembly turns a stopper positioned in the main valve body between inlet and outlet passages. The bonnet is mounted for rotation and means extend between the bonnet and the driven magnet assembly such that sufficient rotation of the bonnet will cause rotation of the stopper.

Abstract: A valve structure for use in a two handle faucet environment includes a sleeve and a valve member positioned within the sleeve and rotatable therein. The sleeve has an inlet and an outlet and a path of flow therebetween. The valve member has an opening which is used to connect the inlet and outlet and thus form a part of the path of flow. An annular seal member is fixed on the valve member and spaced from the opening, which seal member is used to close off communication between the inlet and outlet. At no time is the path of flow through the seal member, thus preventing any excessive pressures being applied to the seal.

Abstract: Improved valve mountings with rotational limiting stops for self-closing breakaway valve assemblies comprising two frangibly connected valve housings each having a rotatable valve member and trigger means holding the valve members open until the valve housings separate. The rotatable valve members have slotted trunnion shafts respectively rotatably received in trunnion bearings mounted to the valve housings. A coil spring is deployed about each trunnion shaft and has one tang end received in the slot of the trunnion shaft to bias the rotatable valve member to its closed position. Indicator shafts keyed with the trunnion shafts are rotatably mounted in the trunnion bearings, the ends of the indicator shafts being exposed to indicate the positions of the valve members.

Abstract: A flow control valve is disclosed comprising a valve housing defining a through flow passage, a valve member supported in the housing for pivotal movement with respect to the housing between an open position in which flow through the passage is enabled and a closed position wherein flow through the passage is blocked, and an actuator for moving the valve member between said position. A linkage transmits actuating force from the actuator to the valve member and, a force limiting device limits the actuating force transmitted to the valve member when the valve member is in its closed position.

Abstract: The locking valve apparatus includes a valve housing containing a rotatable cylinder lock with a keyway extending into the cylinder from one end and with a stationary cylindrical member of the valve housing encircling this rotatable cylinder. An alignment element on the outside of this stationary cylindrical member is adapted to position, align and guide a removable handle for the valve. This removable handle includes a sleeve defining a socket which is adapted to nest over the stationary cylindrical member of the valve housing when the handle is engaged for operating the valve. A key is located inside of this sleeve socket, being adjustably secured therein, and the socket is provided with a slot, which the user of the handle must align with the alignment element, otherwise the handle cannot be positioned on the valve housing.

Abstract: A plug valve having a valve body with a cylindrical plug receiving opening extending therethrough having at least one terminal end thereof outwardly chamfered. Fluid inlet and outlet passageways communicate with the receiving opening and are chamfered at the areas of communication therewith. A plug member includes a cylindrical plug portion closely received in the body receiving opening. This plug portion has a transverse fluid flow passage which is selectively rotatable into and out of alignment with the valve body inlet and outlet passageways. Axially spaced apart circumferential sealing members disposed on both sides of the flow passage prevent fluid flow outwardly of the receiving opening. An inlet passageway sealing means disposed in the plug portion side wall intermediate the opposite flow passage ends sealingly surrounds the passageway in the valve closed position.