Abstract: In a freeze protection-valve, a wax actuator is situated in a heat-conductive housing to which heat is conducted from the liquid system being protected. The housing prevents the actuator from triggering the valve to its opened condition while the liquid system is hot, but permits a rapid response when the liquid system is cool. In a snap-action freeze protection valve, the actuator is carried by the valve stem, and heat is conducted from the valve body to the valve stem through a sleeve through which the valve stem slides. The actuator moves a cam within the valve stem which operates a ball-type latch. The latch holds the valve in the closed position until the actuator releases the latch. Also disclosed is a remote-controlled valve operating mechanism which uses an electrically heated wax actuator to effect valve closure.

Abstract: A valve assembly for draining water from a well pipe to facilitate the flushing of the pipe or to reduce its weight when removing the pipe from the well without separating the components of the pumping system which are all securely connected. The valve assembly is positioned in an axial line just above the down hole pipe. The assembly includes a short pipe section having drainage ports. A tight fitting sleeve circumscribes the pipe section. The sleeve is spring biased continually urging the sleeve in a downward or closed position. A means is provided that is connected to the sleeve and extends upwardly to the surface where it may be accessed to manually open and close the ports.

Abstract: Provided is a device mounted on one end of valve body, remote from a manipulation lever attached to the other end of the spool, for retaining the spool at an offset position other than a position to which the spool is returned by the force of a return spring, wherein a shaft coaxial with the spool is formed directly therein with a linear guide section, a ring-like projection and a detent section, thereby the spool is retained not by pushing out balls in the direction radial from the axis of the spool, that is in the direction toward the inner wall of a casing, but by dropping the balls in the centripetal direction, that is, the direction toward the axis of the spool.

Abstract: A butterfly valve having a two piece body, an annular seat carried in the body and a disk mounted in the body for rotation within the seat. An indicator plate mounted at one end of the body and a valve actuator attached to the disk shaft and overlying the plate with a detent arrangement for indicating valve position. Outlet nozzles carried on the disk with a flow path from the exterior of the valve to the nozzles for introducing fluid flow into the pipeline, with check valves in the valve body and in the nozzles. A special disk configuration for reducing damage to the disk edge.

Abstract: A safety vent seal assures a release path for the residual volatile beverage that can be expected to be found within a disposable container. The container is sealed by an inner valve is urged toward a sealing relationship with an outer valve member by a semi-compressed spring and the second valve is urged toward a sealing relationship with the valve body by a second semi-compressed spring. The safety vent seal may be located either between the inner valve and the outer valve or between the outer valve and the valve body. In the former case, the safety vent seal is generally cross-shaped while, in the latter case, the seal is generally "C-shaped". In both configurations, the seal expands as a consequence of the tapping of the valve and inserts itself into an otherwise-sealed relationship. aperture notch expand, preventing the valve from resealing when the tap is removed.

Abstract: A pendant for controlling the energization of pneumatic motors that position an overhead crane trolley and raise and lower an object supported by a hoist mounted on the trolley is disclosed. The pneumatic pendant includes a moisture-proof housing (11) and a plurality of manually actuated pneumatic control valves mounted in the housing. The control valves include a start/stop valve (69) and direction valves (119a-d) for directing forward and reverse air pressure to the crane trolley motor, and up and down air pressure to the hoist motor.

Abstract: The improved shaft locking apparatus includes a body with a bore therethrough and includes balls mounted in radial ports in said body so that in one position the balls partially extend into the bore and in restricting the bore lock a shaft associated with the apparatus from axial movement. A heat sensitive material is used as a part of the balls supporting means and when it is subjected to excessive heat, heat above its design limitations, its support of the balls relaxes and allows their retraction from the bore to thereby allow axial movement of the shaft.

Abstract: A detent mechanism for a pressure control valve adapted to control the extent of deflection of each of pressure control springs to control pressure on a secondary side of each of spools to a level depending on the deflection, which is capable of causing each of solenoids to be simplified or small-sized. For this purpose, the control lever is provided with a plurality of suction elements and the solenoids are arranged to suck suction elements thereon. A position at which each of the suction elements is sucked on the solenoid is defined outside of a position at which push rods each are abutted against a forcing section of the control rod.

Abstract: For freeze protection of a water line, a T fitting in the line is provided with a removable threaded bushing having a plug with radially projecting balls which engage J-shaped slots in the bushing to provide a bayonet joint. The plug is released when freezing conditions threaten by retraction of the balls in response to movement of a cam inside the plug by a thermal actuator also inside the plug. A check valve in the T fitting is closed automatically when the threaded bushing is removed. Modified versions include a plug having dual actuators in series, a plug combined with a flanged bushing for use in freeze protection of a compressor head, a plug combined with a valve to provide a snap-action drain valve with a more easily replaceable actuator assembly, and a plug using a water-filled glass vial as an actuator. A building protection system and a locomotive coolant system, both use freeze protection devices in accordance with the invention.

Abstract: A simplified valve spool detent device including a sleeve attached to the valve body surrounding an extending portion of the valve spool, the sleeve including a plurality of radially spaced holes therein in a common plane with a plurality of balls positioned in the holes, a c-shaped spring positioned outside the sleeve in spring contact with the sleeve, the extending portion of the spool including a cylindrical surface passing through the plane of the balls including a circumferential lug means in the form of a hardened wire ring seated in a circumferential groove in said cylindrical surface.

Abstract: An open-center three-way hydraulic valve as applicable to hydraulic control circuits of electric circuit-breakers comprises an admission valve-head which is restored to the closed position by a first spring, a drain valve-head which is displaced toward the closed position by a pilot valve, a second spring which is more powerful than the first and tends to close the drain valve-head, and a resilient semi-locking mechanism for retaining the drain valve-head in the open position in opposition to the second spring when the pilot jack is not under pressure.

Abstract: The invention comprises a mixing valve assembly with a cold and hot water inlet, a mixing chamber, and a mixed water outlet, wherein the mixed water temperature is adjustable by rotation of the actuator, and wherein a constant water flow can be set by axial depression of the actuator. More reliable operation is achieved, along with simplifications in manufacture and installation, by having on the assembly a locking device for the actuator, so constructed that when the actuator is depressed it is held by the locking device in the new position but is released when again depressed.

Abstract: A magnetic detent joy stick and stack remote control valve is provided having a traction magnet detent in which a magnet plate activated by the detent is constantly urged against the coil housing to prevent dirt from getting between the coil plate and coil housing face when the power is cut off and/or the valve is in neutral.

Abstract: A variable effort power steering system for an automobile includes a rotary valve power steering gear, a detent type variable effort detent system whereby a fluid detent pressure proportional to vehicle speed operates on a detent between an input member of the steering gear and an output member of the steering gear to prevent relative angular displacement therebetween until steering handwheel effort exceeds a threshold magnitude increasing with increasing detent pressure, and a shunt system between the two working chambers of the steering assist fluid motor. The shunt system includes a shunt valve in a shunt passage between the working chambers which is closed at zero or low vehicle speed and is progressively opened by detent pressure as vehicle speed increases whereby progressively more fluid is shunted from the active working chamber to the reservoir at higher vehicle speeds.

Abstract: A speed sensitive detent system for a variable effort power steering gear. A detent support portion on the output member of the steering gear has a plurality of internally threaded radial insert bores therein. A detent insert is threaded into each insert bore and includes a detent bore the centerline of which is offset from the centerline of the corresponding detent insert. A detent ball is received in each detent bore and biased by a servo fluid pressure into a detent groove in the input member of the steering gear angularly aligned with the insert bore. After the rotary valve of the steering gear is balanced during assembly of the gear, the detent inserts are rotated in their insert bores until the centerlines of the detent bores intersect the centers of the detent grooves so that the detent balls do not upset the hydraulic balance of the rotary valve when biased into the grooves by the servo fluid pressure.

Abstract: A multipiece control spool of a control valve is hooked together by hooks extending from the end surface of each spool member. At least one hook is provided with central plateaus that extend into beveled areas that allow for axial misalignment between hooked spool members. The end surface of one of the spool members is also provided with a central plateau and a recessed surface extending from the plateau, to further aid in allowing for axial misalignment.

Abstract: An indexing control for fluid flow regulating valve assembly having a valve body adapted for connection to a water source, a valve stem projecting outwardly from the body, and a knob affixed to the outer end of the stem for rotating the same, the indexing control comprising a first shoulder element supported in non-rotative position on the valve assembly, and a second shoulder element on the knob adapted to frictionally but slidably contact the first shoulder element as the knob is rotated, for imparting an indexing action thereto.

Abstract: A mechanical detent for engaging a valve spool having a linear element wire spring positioned transverse to the valve spool for engaging circumferential grooves in the spool. The linear element spring includes a single wire spring having a triangular or square shape, or alternatively, one or more non-integral straight wire springs. Extensions of the linear element spring extend a distance away from the spool that is greater than the spring wire diameter. The extensions allow the spring to be movable out of the groove, while still permitting a small diameter spring wire.

Abstract: A compact gas flow control valve has a valve body having an inlet for receiving gas pressure, to provide gas at a substantially constant delivery pressure to be delivered by the gas flow control valve, and an outlet for delivery of the gas. Flow rate of the delivered gas is controlled by a rotor. A flow control plate covering the rotor has a plurality of orifices produced by one of various processes including mechanical drilling, laser drilling, piercing, punching, and selective etching. A selector mechanism orients the rotor to permit flow only through a selected one of said orifices at such delivery pressure for delivery by the outlet. The orifices define a preselected schedule of different flow rates determined by the diameter of the respective orifices.

Abstract: A compact gas flow control valve has a valve body having an inlet for receiving gas pressure, to provide gas at a substantially constant delivery pressure to be delivered by the gas flow control valve, and an outlet for delivery of the gas. Flow rate of the delivered gas is controlled by a rotor. A flow control plate covering the rotor has a plurality of orifices produced by one of various processes including mechanical drilling, laser drilling, piercing, punching, and selective etching. A selector mechanism orients the rotor to permit flow only through a selected one of said orifices at such delivery pressure for delivery by the outlet. The etched orifices define a preselected schedule of different flow rates determined by the diameter of the respective orifices. The control valve is positioned by a shaft and flow control knob having a positive detent mechanism for preventing stable orientation in a position other than for selected flow control.

Abstract: This invention provides an adjustable damper having a tubular duct section defining first and second diametrically opposed openings and first and second sets of detents formed radially from the material of the duct about the respective openings to define a plurality of damper settings. The first detent set is offset angularly relative to the second detent set and a valve element is provided having a circular central portion proportioned to fit within the duct section. Diametrically opposed first and second shoulders project from the periphery of the disc and aligned first and second stub axles are formed from the material of the disc and depend from the respective first and second shoulders. These shoulders are engaged with the respective first and second sets of detents such that in any one selected angular position of the valve element, the element is located by engagement of one of the shoulders in one of the detents of the detent sets.

Abstract: A valve assembly for a sphygmomanometer controls the inflation and deflation of a pressure cuff. The valve assembly includes an inlet connectable to a fluid pressure source such as a bellows, an outlet which is connectable to a blood pressure cuff, an inlet directional control which actively prevents the flow of fluid from the outlet to the inlet, axial passages which connect the inlet to the outlet, and means for slowly and fixedly or rapidly releasing pressure. The valve assembly may be set to one of three positively located positions: a cuff inflation position, a metered deflation position, or a fast vent position. In the cuff inflation position, fluid pressure delivered to the valve assembly's inlet passes through an inlet directional control to the valve assembly's outlet and on to the pressure cuff which becomes inflated.

Abstract: A device for metering the flow of a liquid medium passing therethrough comprises a plastic stem member having a cylindrical metering drum element projecting into and rotatively engaged in liquid tight relation with the cylindrical wall of a bore chamber in a body member to rotatively mount the stem member therein. A diametrically slotted headed stud projecting endwise from the drum element is contracted and inserted through a bore opening in the end wall of the chamber in the body member to cause the head end of the stud to snap-lock behind the chamber end wall and thus secure the stem and body members together in assembled rotative relation.

Abstract: A fluid-powered actuator assembly 10 for gate valves 13 having a slab gate 21 with a port 22 adapted to be placed in registry with the flow passage through the valve wherein the valve is moved to open position by application of fluid pressure to the actuator piston 18 and moved to closed position by a piston return spring 33 when the pressure is removed. The assembly includes an auxiliary energy storage device 40 in the form of a coiled spring 41 which is compressed in the initial stages of the actuator stroke to open the valve 13 and is maintained in the compressed energized state by a releasable latch mechanism 52 which latches to the auxiliary spring housing 42. When the actuator 12 operates to close the valve, the auxiliary coiled spring 41 is released near the end of the valve-closing stroke to provide additional axial thrust to the actuator shaft 17 and the valve gate 21 of a magnitude sufficient to shear wire lines 25 or other members which have been inserted through the gate port.

Abstract: A compact gas flow control valve has a valve body having an inlet for receiving gas pressure, to provide gas at a substantially constant delivery pressure to be delivered by the gas flow control valve, and an outlet for delivery of the gas. Flow rate of the delivered gas is controlled by a rotor. A flow control plate covering the rotor has a plurality of orifices produced by one of various processes including mechanical drilling, laser drilling, piercing, punching, and selective etching. A selector mechanism orients the rotor to permit flow only through a selected one of said orifices at such delivery pressure for delivery by the outlet. The etched orifices define a preselected schedule of different flow rates determined by the diameter of the respective orifices.

Abstract: The specification discloses a soil plugging and ejecting apparatus for being inserted into soil to form and remove a soil plug and for ejecting the plug. The apparatus includes an elongate tubular body having a cutting edge on its lower end for piercing the soil to form a plug. A step attached to the body receives downward pressure to force the apparatus into the soil and a grip attached to the upper end of the body provides a means for holding and guiding the apparatus, and for pulling it out of the soil after the plug is formed. A valve mounted on the apparatus is in fluid-flow communication with a source of pressurized fluid and the body, and is operable to selectively admit pressurized fluid into the body to eject a plug from the lower end of the body. The valve can be actuated by a handle or a button.

Abstract: A hydraulic distribution valve having two substantially identical, molded plastic shells which are joined at their peripheries to form the distribution valve housing. A shaft is journaled within the housing and extends through one of the shells. A rotor is coupled to the shaft and is rotatably disposed within a rotor chamber defined by the housing. Each shell additionally defines a plurality of axially disposed cavities, where at least two of the cavities of the second shell communicate with the rotor chamber. The second shell also defines an inlet which communicates through a gallery which passes through a portion of the shaft and rotor for communication between the inlet and a control port which is defined by the rotor. The shaft and rotor can be rotated to align the exhaust port with a selected cavity to permit communication between the inlet and the selected cavity.

Abstract: Apparatus for regulating air flow through a housing is disclosed. A baffle assembly including a ramp-like keeper is provided such that detents on the keeper contact the edge of the baffle to secure the baffle in position. When the baffle reaches a top position along the keeper it contacts a cam and returns to its initial position. The combination arrangement is utilized to either regulate the flow of air being discharged from the unit or to divert air between multiple outlets in the housing.

Abstract: A fuel shut-off valve for an internal combustion engine carburetor which includes passages leading from a fuel source to a controlled fuel passage. A valve seat is interposed between these passages disposed to be closed by a plunger type valve biased toward the valve seat by a coil spring. An actuator for the valve includes a configuration to keep the valve from rotating and a cross-pin transfixing a valve stem on the plunger type valve. A cam lever has a collar surrounding the valve stem with cam surfaces to engage the cross-pin which upon rotation will lift the valve off of the valve seat. A radial detent groove at the top of the cam surface receives the cross-pin to establish the open position of the valve. Release of the pin from the detent groove causes the pin to ride down the cam surface under the bias of the spring to a closed position.

Abstract: The disclosure relates to a four-way valve, incorporating a fail-safe pivotal valve stem, a finger knob indicating simultaneously both closed and opened ports, and three connector fittings oriented in a Y configuration about the centrally located valve stem body for connection with various types of tubing or catheters. A number of channels bored into the valve stem are oriented to connect various ports within the valve housing in a number of combinations depending on the valve stem position. Detent means are provided to lock the valve stem in a selected position and prevent inadvertent opening or closing of a selected port or ports.

Abstract: A flow-control valve assembly particularly useful in fire fighting apparatus comprising a contoured valve seat mounted axially within a valve body and a balanced tubular valve member reciprocably movable in the valve body coaxially with said valve seat for providing proportional flow control, manual valve actuating means for reciprocably moving the tubular valve member including a disc rotatably mounted in a bore formed in a lateral surface of the valve body on a pivot member on which a handle is pivotally mounted and a pin spaced from the pivotal member extending through the handle and the disc which engages in a circumferential groove formed in the outer surface of the tubular valve member for effecting reciprocable movement of the valve member when the handle is reciprocably moved. The disc can be made of deformable material and provided with means for expanding the disc to impart a braking action on the movement of the handle.

Abstract: A new instant cooling device for cosmetics is disclosed. Unique light weight and small refrigerator system is used in combination with a safety device to reinstate the proper hardness and consistency of facial cosmetics by cooling.The instant cooling device comprises pressure vessel with valve containing liquid refrigerant and adequate release mechanism to allow efficient cooling of personal size cosmetics.

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 sterile intravenous flow valve includes in-line valve mechanism which is maintained sterile in all of its positions. The valve also includes an adjustment member and a locking mechanism for selectively locking the adjustment member in place to thereby assure accurate flow rate settings. Sterility is achieved by providing a sealed chamber formed by a snap-fit engagement between the adjustment member and the main body member of the valve.

Abstract: A positioning assembly for a rotatable valve having a valve body, a rotatable valve element and a valve stem rotatable with the valve element, the assembly including a handle with an engagement portion for engaging the valve stem and a positioning or indexing member carried by the valve body, positioning of the valve element being accomplished by flexure of the handle and selective engagement or disengagement with the positioning or indexing member.

Abstract: An energy saving incrementally adjustable vent, for permitting the passage of air from one defined space to another which can be mounted on a vertical or horizontal surface includes a frame for mounting over an opening communicating therebetween. The frame has a central passageway disposed therethrough and a flap movably mounted to the frame, so as to be movable from a closed position substantially blocking the passageway, to an open position, permitting the flow of air therethrough. An adjustment device has a detent apparatus affixed to the frame. The adjustment device cooperates with the flap to provide a means for selectively adjusting the amount of air flow therethrough.

Abstract: A process gas controller, connected to a sources of purging and process gas, includes five valves and a pressure regulator between the process gas source and the equipment. Operating the valves provides process gas to the equipment and allows the controller to be vented of process gas and purged using the purging gas. A novel pneumatic valve controller, used to control the opening and closing of the valves, provides seven different valving combinations to supply process gas to the equipment, vent process gas and purge the system. The valve controller includes a program member having a number of passageways, each connected to one of the valves and to a program surface via program ports. A movable valve selection member overlies the program surface and includes an inlet passage coupled to a compressed source so that when the inlet passage becomes aligned with one of the various sets of program ports, compressed air is provided to the corresponding valves to actuate them.

Abstract: A locking valve construction including a housing, a valve member in the housing, a fluid inlet and a fluid outlet in the housing, a valve member rotating key for rotating the valve member to an open position for selectively effecting communication between the fluid inlet and the fluid outlet, a holding member effectively mounted on the housing for holding the housing against rotation relative to a base when the valve member is being rotated by the valve member rotating key, and mounting structure for mounting the housing on the base for permitting the housing and the valve member to rotate as a unit in the event that the holding member is rendered inoperative to thereby prevent movement of the valve member relative to the housing to an open position.

Abstract: A hydraulic control valve includes a spool valve intermittently movable between a neutral position and a more preselected axially spaced position. The spool valve is latched in said preselected position. The valve further includes a fluid dampening system. The system includes a fluid receiving chamber in said control valve. A piston is movably disposed within the chamber. A fluid supply is connected to the chamber for delivering fluid thereinto. A fluid flow control device regulates the flow of fluid from said chamber. As the spool valve is moved towards its neutral position from the preselected position, the piston is displaced to discharge fluid from the chamber through the fluid flow control device. A fluid reactive force is generated by the discharge of fluid from the chamber, with the fluid reactive force acting on the spool valve to dampen movement thereof towards its neutral position.

Abstract: A valve having a tubular body with a valve seat and valve member controlled by a valve operator with provisions for latching the valve operator with the valve member in partially open position utilizing a snap ring which is propped out into a groove in the body and provides a stop maintaining the valve partially open against a spring and in which the valve operator has a receiving groove which receives the snap ring and maintains it in an out-of-the-way position upon movement of the valve operator toward full valve-open position.

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: A detent mechanism for a hydraulic control valve, having a detent position in which a detent member is in engagement with a groove and a spring urges the detent member into the groove so that a predetermined force is required to move the detent member out of the groove. A second spring loaded detent member is provided which requires the application of another predetermined force in order to move the mechanism into the detent position. The springs for both of the detent members can be readily changed to adjust the forces required to operate them.

Abstract: A finger operated drain valve for crankcases, radiators and bilge drains having a slide gate held in the closed position by a locking spring.

Abstract: Disclosed herein is an outboard motor comprising a cylinder, a crankcase extending from the cylinder and including an upper portion having a bearing and a lower portion having a drainage outlet, a transfer passage extending between the cylinder and the crankcase, a drains return inlet in one of the cylinder and the transfer passage, a fuel supply system including an inlet manifold communicable with the cylinder and having a drains outlet and a carburetor communicating with the inlet manifold and having a drainage outlet, an overboard drain, and a valve and conduit system selectively operable for communicating the overboard drain with each of the manifold drains outlet, the crankcase drains outlet, and the carburetor drainage outlet, for communicating the crankcase bearing and the drains return inlet with the manifold drains outlet and the crankcase drains outlet, and for closing the carburetor drainage outlet.

Abstract: A polymer filtration system comprises plural passages each having therein a filter selectively removable for cleaning and replacement. A single valve controls the closing off of the passages from an inlet to the filters, and check valves in each of the passages downstream of the filters prevent backflow. By adapting the system to permit simultaneous flow in plural passages between filter changes, the filters may be changed in staggered sequence at intervals chosen to attain optimum system performance.

Abstract: A device for automatically raising fish traps, crayfish pots, nets and the like comprises a tank containing pressurized gas connected through a control valve to an inflatable bladder. A control unit including a receiver and a solenoid driver is operable to open the valve, causing bladder inflation, when activated by a signal transmitted through the water or a timing mechanism. The control unit and valve are located within a watertight compartment of a housing connected to the tank. A pair of substantially flat frame members interconnect the housing to the tank. The frame members are mutually orthogonal and include identical cutouts defining a spherical inflation region. The bladder is positioned in the inflation region by upper and lower mounting sleeves. The upper sleeve includes a deflation valve and lift ring to provide automatic bladder deflation as the ring is engaged by surface personnel to raise the device from the water.

Abstract: A mixing valve for mixing a first liquid with a second liquid. A control handle allows an operator to control both the ratio of the two liquids in the mixture and the flow rate of the mixture. A spherical guide body is rotatably disposed within an inside spherical cavity of a valve body. Separate inlet orifices inject a first liquid and a second liquid into the spherical cavity, while a third orifice discharges the mixture from the spherical cavity. A spherical guide body is rotatably disposed within the spherical cavity. A mixing cavity is disposed in the guide body to communicate with the discharge orifice and the two inlet orifices. A handle is connected to the guide body to allow an operator to rotate the guide body. If the guide body is rotated in one direction, the ratio of the area of the first inlet orifice communicating with the mixing cavity to the area of the second inlet orifice communicating with the mixing cavity is varied, changing the composition of the mixture.

Abstract: Disclosed is a click stop device assembled of three elongated securing units in the form of notched bars. The notched bars are disconnectably mounted to the inner circumference of supporting rings which surround an axially displaceable member provided with radially directed engaging balls. The cross section of the member and the corresponding contour of the supporting rings has hexagonal shape to prevent angular displacement.

Abstract: A three-way valve assembly having a reciprocable valve plunger movably controlled by a solenoid. The valve housing has an elastomeric orifice member seated thereon, which orifice member controls flow of pressure fluid from a source. The valve plunger has an enlarged nondeformable valve surface thereon which engages a projecting end portion of the orifice member for sealingly closing off the orifice.

Abstract: A relief valve for relieving excessive fluid pressures in a fluid pressure system comprising: a valve body having a cavity therein and an inlet port and an outlet port in fluid communication with the cavity; and a plug assembly carried in the valve body for reciprocal movement between a closed position in which the plug assembly prevents flow of fluids through the inlet port and an open position, in which the plug assembly permits flow of fluids through the inlet port and into the cavity for exit through the outlet port.