Abstract: A locking device for a valve to be used in conjunction with a lock having a hasp comprising a pair of detachably connected corresponding members that when assembled engage the flow valve to substantially prevent its movement. The members include a means to restrain relative twisting of the members, and a means for joining the members together with the lock wherein the hasp is sandwiched between said members.

Abstract: A valve and an arrangement for testing and draining a fire suppression water sprinkler system includes a valve which has a valve member with first, second and third ports. The selective rotation of the valve member interrupts a flow of water through the valve and permits a flow at two different preselected flow rates. The valve may be constructed so as to permit its use in either of two orientations with respect to inlet and outlet openings of the apparatus. A sight glass arrangement may be provided in which two sight glasses are offset from one another by 90 degrees and are arranged in the arrangement in a manner permitting the easy visual observation of flow therepast.

Abstract: A ball valve of the type comprising a body including a valve chamber having inlet and outlet ports, and a rotatable ball element disposed within the valve chamber, the ball defining a conduit communicating with the inlet and outlet ports. The ball is actuated by a control lever to rotate between a first open position and a second closed position of the valve; a manually operable lock is provided to retain the control lever and the ball element in those first and second positions and in at least one intermediate operative 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 system for installation in mechanized vehicles which have an hydraulic brake system prevents the unauthorized operation of such vehicles and includes a valve of a special construction which comprises a housing provided with inlet ports and outlet ports for the hydraulic fluid, and an inner core member which is movable within the housing and is provided with bores which correspond with the ports in the housing forming a passage. Further, the valve includes at least one by-pass passage provided with a one way valve, the inner core member is movable rotatively or axially within the housing, and is connected to a key operated lock.

Abstract: A lock mechanism for a rotatable stub such as the operating shaft of a fluid flow control valve has a main body 10 connected to a drive member 12 adapted for mounting on the rotatable stub. A locking sleeve 17 is adapted to fit closely to the machine (e.g. valve) on which the mechanism is fitted so as to be held against rotation, and mounted in the body are two key-operated lock members 25 engageable with the sleeve 17 to lock the body against rotation. Associated with each lock member 25 is a control plate 56, movement of which can be blocked by a stop member 53 so preventing operation of the associated lock member 25. The two stop members 53 are threaded on studs 55 fixed in the body 10, and are moved linearly on being rotated by respective toothed wheels 46, driven by a peg 62 on sleeve 17 as the body 10 is rotated.

Abstract: A locking valve has a housing defining a fluid flow passageway, a stem bore and a lock bore intersecting the stem bore. A plug or stem may seat in the stem bore for movement between passageway opening and closing positions. A locking device is disposed in the lock bore and is arranged automatically to arrest and prevent movement of the stem upon its movement to a desired locked position such as when it closes the passageway.

Abstract: A removable key operated locking device for a rotary valve includes a locking member having a tip having a selected diameter connected by a throat having a smaller diameter to a body portion which may have a slightly larger diameter than the tip portion and a predetermined length whereby the locking element is completely insertable within a specially designed receiving bore located at one end of the valve housing so as to be completely isolated from access from the exterior except by means of a plunger-type key; a locking cage is disposed within the receiving bore and is held in a predetermined locking position by cooperation with a conically-shaped annular surface formed on the surface of a portion of the locking bore; the locking cage cooperates with one end of cylinder portion of the key whereby, upon insertion of the cylindrical portion, the locking cage will be moved completely out of the path of travel of the tip portion of the locking element but will automatically engage under a spring force the neck

Abstract: A valve lock for a tank truck comprising an elongated straight length of strap metal having a shorter leg at each end projecting laterally in the same direction therefrom. The shorter leg at one end is secured to an upstream portion of the valve body which connects to the conduit leading from the tank of the truck, and the shorter leg at the other end is releasably secured to the rotary valve operator or valve handle to prevent its movement from the valve closed position to the valve open position until released. The lock device is positioned in such a way that the elongated portion of strap metal bears firmly against a portion of the valve body, such as its outlet spout, to further restrain rotation of the valve operator or valve handle in the direction of rotation which would open the valve.

Abstract: An adjustable lock for rotating drives, more particularly pipework fittings such as screwdown valves, gate valves or the like wherein the drive is required to make a number of revolutions. In the adjustable lock, a planetary transmission is provided as a reducing transmission in order to reduce drive rotation to at most one revolution and, therefore, to define a definite locking position.

Abstract: A pressure-compensating hydraulic system is disclosed for preventing unauthorized use of an associated material handling implement. The system includes a variable displacement hydraulic fluid pump, and a load-sensing pressure-compensator for varying the output of the pump responsively to the pressurized fluid demands of the system. In order to prevent unauthorized use of the associated implement, the invention contemplates the provision of an override mechanism for negating the demand-responsive characteristics of the system. In this manner, a movable member of the implement, such as one of its stabilizers or its loader bucket, is positioned so as to immobilize the implement, with the member thus maintained in this position since the system will not respond to the demand for pressurized fluid to move the member from this immobilizing condition.

Abstract: A rotary plug valve capable of being locked in selected positions includes a body and a valve member rotatable in the body between valve open and closed positions. Transverse bores are formed in the body and valve member for reception of a locking pin having a first enlarged head on a reduced shank and a second enlarged head capable of receiving the reduced end of the shank and of being locked thereto. The bore in the body is of a size to receive the heads, the central portion of the bore in the valve body being of a size less than the diameter of the heads but sufficient to receive the shank of the locking pin so that once locked, the pin may not be removed and the valve body and valve member may not be rotated relatively to one another. The pin may be unlocked by a key axially inserted into the shank through one of the heads.

Abstract: A calibrated handknob assembly for use with a valve having a control stem, said assembly having a rising stem with spaced circumferential calibrations, a handknob having circumferentially spaced radial calibrations, a lock ring having an index cooperating with said handknob calibrations and having positions for permitting setting of the handknob "zero" position and index position at a desired circumferential location, for placing the assembly in a condition where the handknob cannot be rotated and for permitting rotation of the handknob to change the valve opening. An O-ring is used to detent the lock ring so that inadvertent rotation of the handknob will not occur and to prevent movement of the lock ring to the position where the handknob can be removed and "0" calibration reset. The O-ring may be easily removed to permit the resetting when needed.

Abstract: A device is used to control the passage of fuel from a fuel tank to an engine. The device comprises a body including a chamber. An inlet member is connected to the body and has an inlet passageway for placing the fuel tank in fluid communication with the chamber. An outlet member is connected to the body and has an outlet passageway for placing the chamber in fluid communication with the motorcycle engine. An element is disposed within the body and movable between a position placing the inlet passageway in fluid communication with the chamber and a position preventing fluid communication between the inlet passageway and the chamber. A lock mechanism is used to secure the element in the position preventing fluid communication between the inlet passageway and chamber to prevent movement of the element to the position placing the inlet passageway in fluid communication with the chamber.

Abstract: Highway trailer for hauling cargo has air actuated brakes. Valve mounted on the trailer connected in the air line maintains brake-on air pressure in the line while trailer is parked. Valve has locking handle to inhibit trailer theft.

Abstract: A locking frame for a ball valve consists of a sheet metal stamping folded into an enclosure having upper and lower plates to partially surround a part of the operating handle and the nut which secures the handle. The handle is keyed to the valve stem and engages body flanges to limit travel to valve open and valve closed positions. The frame is also fitted over the valve stem and includes tabs which engage the flanges to position same and to prevent rotation thereof. The upper plate is folded to a position parallel to the lower plate after assembly and includes a depending tab to further enclose the nut to prevent tampering. A pair of holes in the upper and lower plates are thus in registry and the shackle of a padlock may be passed therethrough to prevent movement of the handle from the valve open and valve closed positions.

Abstract: A security system for preventing theft of the liquid contents of storage tanks, such as those used for storing crude oil. The security system includes a first selectively locked access way, a second locked access way and a discharge valve security control subassembly accessible from outside the tank only by way of both access ways when both are unlocked. The discharge valve control subassembly is operatively associated with a housed, inaccessible discharge valve which can be opened only when the discharge valve security control subassembly is actuated. The discharge valve controls flow of the tank contents from inside to outside the tank through a discharge pipe.

Abstract: A butterfly valve or a similar quarter-turn valve is provided with a locking mechanism which permits the disc assembly to be rotated from the open position to the closed position, but prevents the disc assembly from being rotated back to the open position. The locking mechanism includes a cam carried on a rotatable stem supporting the valve disc assembly. The cam has a camming surface including a detent notch situated at a location corresponding to the open position of the disc assembly. A plunger, which is spring loaded into engagement with the camming surface, is urged into the detent notch when the disc assembly is rotated from the open to the closed position and prevents the disc assembly from being rotated back to the open position.

Abstract: This locking device is for outdoor water faucets, and serves to prevent unauthorized use of such faucets. Primarily, it includes a main body or housing, which fits over the handle of the faucet, and is locked in place by a padlock. It further includes a screw cap, which is threaded onto the threaded nozzle of the faucet.

Abstract: A locking valve having a housing and a valve element movable with respect to the housing to selectively occlude a passageway through the housing. Stops on the outside of the housing normally limit movement of the valve element to a first range of positions encompassing a normal closed position and a normal open position. An interior locking mechanism concealed within the housing is operative to arrest the valve upon its movement to one of such positions. The interior locking mechanism is also operative to arrest the valve element upon its movement to a position outside of the normal or first range of positions. Thus, the interior locking mechanism cannot be defeated by removing the exterior stops and moving the valve element beyond its normal range of positions. The interior locking mechanism prevents removal of the valve element, and the interior locking mechanism is protected from forcing or picking.

Abstract: An adjustable valve locking system for valves in which the axial position of a spindle which carries a valve element is dependent upon rotation of an actuating mechanism. Such a locking system includes an annular member surrounding the valve spindle and rotatable with the actuating mechanism, a connection between the annular member and the valve spindle whereby rotation of the annular member will cause axial movement of the valve spindle, a ring threadedly engaging the outer periphery of the annular member, and a radially-movable locking bolt movable into engagement with the ring to lock the same against axial movement while preventing rotation of the annular member and any linear movement of the valve spindle to lock the same.

Abstract: A lockable valve having features which impede unauthorized removal of the valve from a conduit to which the valve is connected. The housing of the valve has a passageway. A valve element is movably mounted to the housing for occluding the passageway. A structure operatively associated with the valve element impedes disengagement of the valve from the conduit when the valve element is in a first position. Preferably, the housing of the valve is attachable to the conduit by a fitting which is movably mounted to the housing and such fitting is accessible only through the passageway of the housing when the valve is mounted to a conduit. When the valve element occludes the passageway, it blocks access to the fitting and hence serves as part of the disengagement-impeding structure. The valve may include lugs for connecting the fitting to the housing for movement therewith when valve element is in a second position.

Abstract: A lever operator for use primarily with valves of the plug type in which a tapered plug is raised to unseat associated slips and then rotated to a valve open position during opening of the valve and is rotated to a valve close position and lowered to seat the associated slips for closing the valve. The lever operator comprises an elongated lever arm having an eccentric cam at one end thereof connected to the trunnion of the valve to which the invention is assembled and also comprises a unique dual slot gate mechanism which houses the lever arm and restricts the motion of the arm to the requisite vertical and rotational movement which must be carried out in the appropriate sequence to properly operate the tapered plug mechanism of the valve.

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 lock apparatus for attachment to the top of an input pipe communicating with a storage tank includes an open-ended cylindrical housing for mounting to the top of the input pipe, a valve assembly pivotally mounted in the housing with a valve activating axle protruding through an orifice in the housing, and a locking mechanism. The valve assembly includes at least one valve plate with a seal member provided around the edge of the valve plate for sealing the space between the edge of the valve plate and the cylindrical housing when the valve assembly is closed. The locking mechanism includes a latch pivotally attached to the protruding end of the axle, a lock flange attached to the outside of the housing and a tamper prevention flange above and in linear alignment with the axle and the latch to prevent unauthorized tampering with the axle and attached latch. The latch may be coupled to the lock flange and locked to maintain the valve in the closed position across the interior of the housing.

Abstract: A locking mechanism for fuel lines in vehicles in which at least a part of the unit is constructed of aluminum to resisting flame cutting and hardened steel dowel pins are used to resist saw cutting. The locking mechanism has an internal recess which encloses a fuel line valve in a closed position. The locking mechanism is comprised of two members which are interlocked to one another by a rotatable keying element which is in one member and selectively engages with the other member upon operation of a key to lock the members to one another while the fuel line valve is in a closed position.

Abstract: An improved pressure relief valve with an improved device for securing the blowdown ring of the valve without compromising its pressure integrity. These pressure relief valves include a nozzle extending into the interior of the valve and communicating with the pressure vessel and a blowdown ring which is threaded to the nozzle. Atop the nozzle's opening is a disc which is spring biased into engagement with the nozzle to seal same. The device includes an annular collar surrounding at least a portion of the blowdown ring and the nozzle, a first locking member secures the blowdown ring to the collar and a second locking member secures the collar to the nozzle. The device may utilize the wire seal required by many safety codes.

Abstract: Unauthorized removal of the cap from a standpipe, such as a fire line standpipe, is prevented through use of a bent metal bar and a nipple formed at the center of the standpipe cap. The bar has an opening to accept the nipple extending from the standpipe cap, and a slot to receive a metal pin which prevents movement of the standpipe cap, rotation of the cap being prevented by additional means formed on the cap and bar. The bar can be so formed as to also prevent unauthorized removal of the handwheel of the valve which permits liquid flow through the standpipe opening.

Abstract: An anti theft locking device is provided and consists of a casing having a longitudinal passage therethrough and a transverse tapered bore intersecting the passage, tapered plug having an aperture with a top square head portion on the larger end of the plug, the plug fitted for rotation in the tapered bore to control the passage and a locking cover for preventing rotation of the top square head portion of the plug.

Abstract: A lock apparatus for attachment to the top of an input pipe communicating with a storage tank includes an open-ended cylindrical housing for mounting to the top of the input pipe, a butterfly valve mechanism pivotally mounted in the housing with a butterfly valve activating axle protruding through an orifice in the housing, and a locking mechanism. The locking mechanism includes a latch pivotally attached to the protruding end of the axle, a lock flange attached to the outside of the housing and, a tamper prevention flange in linear alignment with the axle and the latch to prevent unauthorized tampering with the axle and attached latch. The latch may be coupled to the lock flange and locked to maintain the butterfly valve in the closed position across the interior of the housing.

Abstract: An improved winterizing system for a recreational vehicle or vacation home for the prevention of freezing and damage to the plumbing, the system providing for the sequential energizing of solenoid valves and the pump switch to effect the distribution of a non-toxic anti-freeze solution throughout the plumbing lines. A special cam switch assures the proper sequence of electrical switching.

Abstract: A valve stem lock for valves having an exposed valve stem. The lock is comprised of a pair of hinged sections movable from an open position to a closed position to lock about a valve stem. The two sections are provided with a base having slots which are adapted to bear against exposed bolts or the yoke of the valve stem so that rotation of the valve stem upon removal of a part such as a bushing nut or the like is prevented. The two hinged sections are adapted to be locked together in the closed position.

Abstract: A diverter device for use in directing pumpdown or through the flowline (TFL) tools through a connector joining a main flowline to at least one branch flowline. The diverter member is pivoted by operation of a removable operator to allow movement of the tool string through a selected branch of the connector. A sealing system allows removal of the operator without having to depressurize the flowlines joined at the connector. The manual operator can be easily padlocked in position. The hydraulic operator provides a rugged, reliable mechanism to translate linear movement of a hydraulic piston into rotary movement of the diverter.

Abstract: A device for checking random adjustment of the adjustable parts of a carburetor comprising a locked cover or covers mounted over the adjusting screw heads on the adjustable parts so that the cover or covers can not be removed without breaking it. Thus, the device is intended to inhibit the user or "layman" from improperly adjusting the adjustable parts of the carburetor. Provision of the cover or covers is also helpful in preventing the screws from becoming loose under vibration or other external forces.

Abstract: Disclosed herein is a locking mechanism for closing the gas line in an automobile, said locking mechanism comprising a tumbler lock engaged to a rotary valve adapted for insertion into a fuel line. The valve itself comprises a rectangular body having a transverse circular opening formed therein across which the fuel flow communicates. Installed in the transverse opening is a rotary planar vane being rotatable to a first position uncovering the inlet and outlet ports of the circular opening and conformed on its exterior edges to the opening periphery, said vane having stand-offs on the bottom thereof for providing a communicating path for the gasoline and being rotatable to a second position closing off the communicating path. In the last position the thickness of the vane blocks the passage of gasoline thus precluding unauthorized use of the automobile. It is contemplated that the foregoing lock be installed in the floor surface of the automobile, the valve extending therefrom being placed into the fuel line.

Abstract: A locking device has a locking plate mounted on a ball valve housing and a hasp slidably mounted on the locking plate for movement into a position in which the hasp can engage the ball valve handle to prevent movement thereof irrespective of whether the handle is in the ball valve open position or the ball valve closed position. When the hasp is disposed to engage the handle, an opening in the hasp is aligned with an opening in the locking plate to receive a padlock for locking the hasp in the handle engaging position so that the handle cannot be turned to move the ball valve.

Abstract: A locking device for a valve disposed in a housing including a stem assembly projecting from the valve for rotation of the valve between an open and closed position which includes a handle assembly provided with a handgrip portion at a first end thereof and a securing member at a second end thereof connected to the stem assembly. The locking device also provides for an abutment member mounted on the housing as well as a locking member mounted on the handle assembly so as to interfittingly cooperate with the handle assembly securing member and the abutment member to secure the valve in either the open or the closed valve position.

Abstract: A plug valve, especially for use in lines carrying abrasive materials and materials at high temperatures and pressures. The valve body is rotatable in a valve casing having inlet and outlet ducts to bring a port in the valve body into communication with the inlet and outlet ducts. Recesses are provided in the valve body wall for closely fitted sealing plugs. The outer faces of these plugs conform to the wall of the valve body. A fluid reservoir within the valve body is connected to the recesses by passageways. A moveable piston is provided in the reservoir to force hydraulic fluid under controllable pressure into the spaces between the rear wall of the recesses and the sealing plugs, thereby permitting the sealing plugs to be maintained in fluid-tight contact with the inner wall of the casing.

Abstract: A latching and locking mechanism for a rotatable control of the type having a stem journaled in a body and rotatable about an axis in a boss on the body. The stem has a protuberance for engagement with a handle. The handle comprises a boss-engaging end portion, a stem-engaging portion, a slider-riding portion, and a grip end portion. The slider-riding portion has a slider with a tang extending therefrom and means for securing a lock to restrict movement of the slider. The boss has surfaces located to correspond to predetermined positions of the stem. These surfaces are engageable by the tang which, when so engaged, restrains the handle from rotation and prevents removal of the handle from the stem.

Abstract: A valve guard to prevent deliberate tampering with or accidental movement of a rotatable valve handle comprising a connecting member for connection to the valve body and a locking member pivotally connected to the connecting member for movement toward and away from the valve handle. The locking member includes first abutment means engageable with the valve handle in an open-valve position to lock the valve handle in the open-valve position and second abutment means engageable with the valve handle in a closed-valve position to lock the valve handle in the closed-valve position.

Abstract: In a device of the type having a rotatable operating member for purposes of selective adjustment thereof, a locking structure for selectively locking the device in predetermined positions. The locking structure has a lock plate affixed to the device and includes a locking portion therein. A separate lock tab member is closely received on the operating member and has a tab portion including a third locking hole which will register with one of the first and second locking holes when the operating member is moved to the predetermined positions in order that a locking member may then be passed through the aligned locking holes. Stop members included on the lock tab coact with the device itself to define the extreme rotated positions of the operating member. A handle is closely received over the operating member for conveniently rotating the member and advantageously extends in generally the opposite direction from the tab portion of the lock tab.

Abstract: A locking device for a valve having a rotatable stem extending from a body and a handle secured to the stem for the purpose of preventing rotation of the handle and movement of the valve member. A fixed locking member is mountable on the valve body. A movable locking member is mounted on the handle for rotation therewith and for relative movement outwardly and inwardly of the valve body and fixed locking member. Interfitting cooperating members on the fixed locking member and the movable locking member are engaged at a desired position of the valve member upon inward movement of the movable locking member relative to the fixed locking member to prevent rotation of the handle and are disengaged to permit rotation of the handle upon outward movement of the movable locking member relative to the fixed locking member.

Abstract: Disclosed is a lock for a valve having a stem which by rotation controls the opening and closing of the valve. The lock essentially comprises a housing having a first opening therein to receive the stem and a second opening; a locking member is disposed in the second opening and comprises a terminal portion which in its closed position contacts the stem and prevents the stem from rotating, a middle portion connected to the terminal portion and having a periphery substantially equal to the greatest periphery of the second opening, and an end portion connected to the middle portion and having a periphery less than the greatest periphery of the second opening.