Abstract: This disclosure provides apparatus and methods for watering livestock using a livestock waterer, a water source, and a waterer valve system for replenishing water in a water reservoir of the livestock waterer. A valve housing can be affixed to the water reservoir and coupled to a plunger. A cam can be pivotably coupled to the valve housing and one end of a float arm. A float component can be coupled to the opposite end of the float arm. Water from the water supply can enter the valve housing and exit an orifice in the valve housing along first and second side spouts. The float component can have a generally flat bottom and move vertically along with the water level within the water reservoir. As the float component moves vertically, the float arm pivots the cam. The cam can move the plunger in the valve housing to stop water flow.

Abstract: A flush assembly for a toilet with a tank can include a rigid siphon body with a siphon inlet, a siphon outlet, and a siphon passage. An outlet assembly can be coupled to the siphon outlet to provide a liquid flow path between the siphon outlet and a flush port of the tank. The rigid siphon body can be configured to float within the tank and to be submerged to establish a siphon-driven flow of liquid from the tank to the flush port to flush the toilet.

Abstract: A backwater valve has a valve body, and a valve member pivotally movable about a pivot axis between an open position away from the valve body and a closed position covering the valve body. A control linkage is provided with at least one of a float or a counterweight in communication with the valve member via the control linkage to modify operation of the valve member.

Abstract: In a ball tap 1, a valving element 3 includes a valve part 10 provided with a contact projection part 9 that can come into close contact with a valve seat 7 when the valving element 3 is closed, and a flange part 11 having a circular ring shape in plan view which continues downward from the rim of the valve part 10 and is slidable like a piston in the secondary side flow passage 5, and the left and right half circumferences of the upper surface of the flange part 11 have bilaterally symmetrical shapes curved downward in arch shapes, and the left and right lower limit portions of the upper surface of the flange part are set so as to be positioned at the same heights as those of the lower end edges of drainage ports 8.

Abstract: A method and apparatus for treating water including a tank having an inlet and outlet and a water treatment material or resin within the tank. A control valve assembly having multiple, separable levels houses a water usage metering mechanism and a regeneration control mechanism, each having associated turbines. An inlet/bypass valve communicates source water with the tank inlet or directly to a system outlet. When the treatment material is exhausted, it is regenerated by actuating the bypass valve to communicate the source water with the system outlet. The turbine driven regeneration control then sequences the steps of regeneration, including opening a control valve to communicate inlet water to a venturi in order to aspirate brine solution and deliver to the tank outlet. The brine solution passes through the treatment material and is discharged through the tank inlet which is communicated to a system drain.

Abstract: A vertical float valve for use in a fluid reservoir. The vertical float valve able to open and closed based upon the level of fluid within the fluid reservoir. The vertical float valve having a body portion. The body portion attached to a float portion via a four bar (4-bar) linkage.

Abstract: An overfill prevention device which includes a first tubular member, a cylindrical piston fitted within the first tubular member, a second tubular member having a cylindrical recess open, a plug arranged within the second tubular member, a float rod having a cam plate, a float connected with a lower end of the float rod, a valve body having a lower end engaged with the first tubular member, a pinion pivotally connected to the second tubular member by the pin, a toothed rack meshed with the pinion and engaged with the second tubular member, a control rod having an upper end extending into the valve body and a lower end secured to the toothed rack, a first magnet mounted at the upper end of the control rod, and a gauge mounted on the valve body and provided with a second permanent magnet and a needle operatively connected with the second magnet.

Abstract: A float valve comprising a shut-off lever and a float lever is disclosed. The shut-off lever is supported for pivotal movement about a first axis between a first closed position and a second open position. The float lever is supported for pivotal movement about a second axis between a first closed position and a second open position. The float lever and the shut-off lever include cams which cooperate to transmit closing forces and opening forces between the levers. The valve exhibits a snap closing action whereby seeping is prevented over a substantial range of liquid levels.

Abstract: A device for preventing overfilling of containers, such as those intended to contain liquefied gases, includes a valve body in which a gas duct is defined and a closure. The closure is axially movable in the valve body away from and towards a valve seat in order to respectively open and shut off the gas duct. An actuator, capable of exerting a thrust, urges the closure away from the seat. The actuator includes a float, a cam mechanism and a lever mechanism. The cam mechanism exerts the thrust in an ascending phase of the float until a preimposed limit position corresponding to a maximum filling level is reached. The lever mechanism exerts the thrust in at least a first part of a descending phase of the float starting from the limit position.

Abstract: A valve device for filling containers, particularly containers intended to contain liquefied gases, includes a valve body in which a gas duct is defined at the inlet of the container, the gas duct extending predominantly in an axial direction. A closure is axially movable in the valve body away from and towards a valve seat in order, respectively, to open and shut off the gas duct. A float type actuator, capable of exerting a thrust on a second end of the closure, is provided. A deflector cover is disposed transversely to the gas pipe and is integral with the valve body. The deflector includes a guide cavity in which a first end of the closure is slidably engaged.

Abstract: A gauge assembly includes an indicator for providing an indication of an amount of fluid in a tank and a stop-fill assembly for stopping the flow of fluid flowing into the tank once the fluid reaches a particular level. The gauge assembly has a shaft that rotates as the fluid level changes in the tank. The indicator translates the rotational position of the shaft into a fluid level. The stop-fill assembly moves from an open position, where fluid can flow into the tank, to a closed position, where fluid is prohibited from flowing into the tank, depending on the rotational position of the shaft.

Abstract: Disclosed is a balanced water-intake control valve, comprising an adjusting mechanism of water-level between two linkage rods. The adjusting mechanism includes a first pivot guide, a second pivot guide, a lead screw and an adjusting nut. The first pivot guide is pivoted at the first linkage rod for driving a valve rod. The second pivot guide is pivoted at the second linkage rod connecting to a float body. The first and second pivot guides are connected by the lead screw at opposite ends. At the middle of the lead screw, an adjusting nut is placed. By rotating the lead screw, the length between the first and second pivot guides can change. Therefore, the water-level upper limit can be adjusted by the user's demand after installing of the control valve.

Abstract: A valve assembly for controlling the filling of a fluid containing vessel is provided having a valve body having a fluid inlet regulated by a valve member movable between an open and closed position within the valve body. A valve controller is provided regulating the valve position having a float pivotally mounted on a float arm and a retaining member pivotally mounted for rotation with the float arm through a limited portion of the float arm range. The retainer member engages the valve member urging it to the open position when the float reaches a predetermined low fill angle and the float arm engages and releases the retainer member when a predetermined high fill level is reached.

Abstract: A gauge assembly includes an indicator for providing an indication of an amount of fluid in a tank and a stop-fill assembly for stopping the flow of fluid flowing into the tank once the fluid reaches a particular level. The gauge assembly has a shaft that rotates as the fluid level changes in the tank. The indicator translates the rotational position of the shaft into a fluid level. The stop-fill assembly moves from an open position, where fluid can flow into the tank, to a closed position, where fluid is prohibited from flowing into the tank, depending on the rotational position of the shaft.

Abstract: An overfill prevention device which includes a first tubular member, a cylindrical piston fitted within the first tubular member, a second tubular member having a cylindrical recess open, a plug arranged within the second tubular member, a float rod having a cam plate, a float connected with a lower end of the float rod, a valve body having a lower end engaged with the first tubular member, a pinion pivotally connected to the second tubular member by the pin, a toothed rack meshed with the pinion and engaged with the second tubular member, a control rod having an upper end extending into the valve body and a lower end secured to the toothed rack, a first magnet mounted at the upper end of the control rod, and a gauge mounted on the valve body and provided with a second permanent magnet and a needle operatively connected with the second magnet.

Abstract: An improved pneumatic level control for the activation, deactivation or regulation or a downstream device or process by way of pneumatic signal in response to increased liquid volume in an attached vessel or container.

Abstract: A gauge assembly includes an indicator for providing an indication of an amount of fluid in a tank and a stop-fill assembly for stopping the flow of fluid flowing into the tank once the fluid reaches a particular level. The gauge assembly has a shaft that rotates as the fluid level changes in the tank. The indicator translates the rotational position of the shaft into a fluid level. The stop-fill assembly moves from an open position, where fluid can flow into the tank, to a closed position, where fluid is prohibited from flowing into the tank, depending on the rotational position of the shaft.

Abstract: A fuel storage tank includes an overfill protection device for shutting off the flow of fuel into the tank via a fuel fill tube when the contents of the tank reach an intended maximum fill level. The overfill protection device includes a butterfly valve located within the fuel fill tube and a float, slidably mounted outside the fuel fill tube and operatively linked to the butterfly valve. The float rotates the butterfly valve towards the closed position in response to an increasing fuel level in the tank.

Abstract: A valve assembly with low gas level signaling and controlling function includes a primary valve threadedly engaged with an outlet of a tank, the primary valve being formed with a recess in which is fitted a plunger having an upper end extending upwardly through the primary valve to engage with a knob, a low level linking device comprising a tubular tube connected with a bottom of the primary valve, a flexible rod having an end extending upwardly through the tubular tube to connect with the primary valve and another end connected with an end of a float rod, and a float connected with another end of the float rod, and a release rod connected a pusher which is operatively connected with the primary valve so that when the release rod is turned, the pusher will move down the flexible rod to open the primary valve, whereby the valve assembly can detect the amount of gas remaining in a gas tank and will close when the level has decreased to a certain level thereby alerting the users and enabling them to replenish th

Abstract: A float, particularly for level control in bottles of liquefied gas and the like, comprising a float body associated with an element for connection to a valve unit, the float body being constituted by an internally hollow element made of plastics whose shape is defined by a plurality of mutually intersecting spherical bodies.

Abstract: Drop tube assemblies are provided and adapted for use with a liquid reservoir. One exemplary drop tube assembly includes a first conduit, a second conduit and a valve assembly. The valve assembly includes a valve member, a float, and a linkage device pivotally connected with respect to the valve member. The linkage device is adapted for communication with the float such that the float may facilitate in adjusting the position of the valve member with respect to a first end portion of the second conduit in response to a liquid level in a liquid reservoir. The drop tube assembly further includes an adjustable stop member engaging the second conduit and adapted to engage the linkage device to limit a movement of the linkage device.

Abstract: A valve assembly for a pressurized fluid vessel such as a propane tank has a housing defining a main fluid passageway therebetween with a valve seat (734) defined in the main passageway, a main valve member (742) movable against the valve seat (734) to block the passageway, an insert (738) defining an internal chamber within the interior of the housing within which the main valve member (742) is disposed, a secondary fluid flow passageway through the insert (738), through a conduit (748) connected to the main valve body, and through openings (751) in an end of the conduit (748) facing second ports opening into the vessel, and a secondary valve member (760) movable to block the openings (751) under the action of a float (721) on a predetermined fluid level being reached, thereby exposing the main valve member (742) to a pressure differential to close the valve.

Abstract: Apparatus for automatically shutting off the water supply to a leaking water heater includes a water collecting tray positionable beneath the heater, a valve mechanism attachable to the tray, a float mechanism, and an action arm interactive between the float mechanism and valve mechanism. When water collects in the tray, the float mechanism rises, causing the action arm to trigger the release of a spring-urged component of the valve mechanism to discontinue flow of water to the heater.

Abstract: A fill valve assembly comprises a valve body extending along a longitudinal axis and defining a fluid inlet, a valve seat and at least one fluid outlet, an axially slidable valve element arranged for axially slidable movement along the longitudinal axis, into and out of sealing engagement with the valve seat, the axially slidable valve element defining a first upstream conical surface having a first surface area and a second downstream conical surface having a second surface area, greater than the first surface area, and a fill sensor operative below a predetermined fill threshold to prevent the axially slidable valve element from establishing sealing engagement with the valve seat.

Abstract: A water-intake control valve including an upper valve base, a lower valve base, a valve tappet and a ball connect rod. The upper valve base is combined with the lower valve base to form a valve chamber with a sealing neck. The valve tappet is movably disposed inside the valve chamber. The valve tappet connects with a slide block and a valve stopper for sealing the sealing neck. The slide block linearly moves along a guiding slot hole of the lower valve base. On one end of the ball connect rod is mounted with a float ball and on another end of the ball connect rod is formed with a degressive arc end. The degressive arc end passes through the guiding slot hole and the through hole of the slide block to pull or push the slide block for linearly moving the valve tappet.

Abstract: An overflow protection device includes a valve body having an inlet conduit passing vertically therethrough. The inlet conduit includes an outlet end below a valve chamber. A valve within the valve chamber is movable between and open and closed position. A float is pivotally mounted below the valve and the float cams, an actuator upwardly when the float experiences a less than full tank and cams the actuation downwardly to permit the valve to move downwardly when the float rises to a predetermined level as it floats on the liquid within the tank.

Abstract: A fill valve assembly comprises a valve body extending along a longitudinal axis and defining a fluid inlet, a valve seat and at least one fluid outlet, an axially slidable valve element arranged for axially slidable movement along the longitudinal axis, into and out of sealing engagement with the valve seat, the axially slidable valve element defining a first upstream conical surface having a first surface area and a second downstream conical surface having a second surface area, greater than the first surface area, and a fill sensor operative below a predetermined fill threshold to prevent the axially slidable valve element from establishing sealing engagement with the valve seat

Abstract: A two-way valve is disclosed comprising at least two lateral openings which can be shut off by a piston provided with an axial orifice for the passage of gas, which piston slides axially in the casing between a position in which the openings are shut off under the influence of a spring and an open position counter to the action of the spring under the influence of the pressure of the filling gas, and a level valve activated by a float at the bottom of the casing. In order to prevent pressure from building up inside the casing after closure, the latter is provided with vent orifices. A seal member is arranged on the piston to cover or uncover the vent orifices.

Abstract: A filling valve for a pressurized fluid container, including a valve body with a longitudinal bore and a side opening formed therein, a sealing assembly slidingly disposed in the valve body, the sealing assembly being formed with a bore therethrough, a valve lever pivotally attached to a portion of the valve body, the sealing, assembly including a jutting portion which protrudes in a direction generally away from a bottom portion of the valve body, a float arm attached to the valve lever, and a float mounted on the float arm, wherein when the float is positioned at a generally obtuse angle with respect to a longitudinal axis of the valve body, the jutting portion of the sealing assembly is raised and supported by the valve lever, such that the sealing assembly is raised and does not block the side opening thereby permitting fluid flow through the side opening, and wherein when the float is sufficiently buoyed by a fluid, the float arm swings upwards and the jutting portion of the sealing assembly is no longer

Abstract: A liquid level responsive shut-off valve for filling a tank, such as a toilet water tank, comprises a valve housing having an inlet passageway for connection to a source of liquid under pressure, an outlet passageway opening into the tank, and a diaphragm actuated valve element having open and closed positions respectively opening and closing the inlet passageway to the flow of liquid therethrough to said outlet passageway and the tank. A float and lever operated ball valve element controls operation of the diaphragm actuated valve element in accordance with the liquid level in the tank.

Abstract: A liquid level responsive shut-off valve for filling a tank, such as a liquid propane tank, comprises a valve housing having an inlet passageway for connection to a source of liquid under pressure, an outlet passageway opening into the tank, and a diaphragm actuated valve element having open and closed positions respectively opening and closing. the inlet passageway to the flow of liquid therethrough to the outlet passageway and tank. A float operated valve element controls operation of the diaphragm actuated valve element and has a closed position when the tank is initially filled which precludes the flow of liquid into the tank thereafter, even when the tank becomes empty, until the liquid supply pressure is reduced to atmosphere.

Abstract: A filling valve for a pressurized fluid container, including a tube with a longitudinal bore and a side port formed therein, a piston slidingly disposed in the tube, the piston being formed with a bore therethrough, a valve lever pivotally attached to a portion of the tube, the piston including a jutting portion which protrudes in a direction generally away from a bottom portion of the tube, a float arm attached to the valve lever, and a float mounted on the float arm, wherein when the float is positioned at a generally obtuse angle with respect to a longitudinal axis of the tube, the jutting portion of the piston is raised and supported by the valve lever, such that the piston is raised and does not block the side port, thereby permitting fluid flow through the side port, and wherein when the float is sufficiently buoyed by a fluid, the float arm swings upwards and the jutting portion of the piston is no longer supported by the valve lever and the piston moves downwards and blocks the side port, thereby prev

Abstract: A valve assembly is provided which includes a valve member for being shifted between open and closed positions, and a control member having an operative position for maintaining the valve member in the open position until a predetermined fluid level is reached and an inoperative position to allow the valve member to shift to the closed position at the predetermined fluid level. The valve assembly is preferably a two-way valve for use with LP tanks to prevent overfilling thereof beyond the maximum predetermined fluid level. A float assembly rises and falls in substantial correspondence to the rising and falling of the fluid level in the vessel space, and an actuator of the fluid assembly shifts the control member at the predetermined fluid level to the inoperative position to allow the valve member to shift to the closed position for preventing further fluid intake into the vessel.

Abstract: Pressurized fluid apparatus including a pressurized fluid container, a pipe arranged for flow therethrough of the pressurized fluid into the container, a valve operatively connected to an end of the pipe disposed in the container, and a float attached to the valve, wherein the float is buoyed generally upwards by the pressurized fluid filling the container, such that when the float has been moved a predetermined amount, the float closes the valve and substantially stops flow of the pressurized fluid into the container, and wherein the float is insertable through an upper opening of the container, and wherein the valve is rotatably attached to the pipe, the valve being closed by an angular upward movement of the float, characterized by the valve including a tube with a longitudinal bore having a longitudinal axis formed therein, and a piston slidingly disposed in the tube, wherein only when the float is generally perpendicular to the longitudinal axis, the piston sealingly abuts an internal end face of the tub

Abstract: There is disclosed a tap for compressed or liquefied gases having an overcharging prevention function, in which a gas can be directly infused/discharged into/from a gas storage tank, regardless of pressure/level of the liquefied gas inside/outside a gas storage tank, higher charging efficiency in the gas storage tank can be accomplished.

Abstract: An improved structure of a floating-ball valve for industrial fluid comprising a valve seat, a valve insert, a cap, a crankshaft, a float and a floating arm, wherein a valve chamber is formed at the internal of the valve seat, and together with a water inlet are pipe hole of various diameter, the lower section of the valve chamber is provided with a water outlet and an elongated slot, at the bottom of the valve seat, a pair of corresponding protruded members are provided, and each is pivotally mounted with a rocking arm, one end of the crankshaft is connected to the floating arm, the valve insert is mounted within the valve chamber characterized in that a vertical water-blocking wall is formed in between the valve chamber and the water inlet, and the valve insert consists of a metallic valve stem and a plastic valve plug, the valve plug has a front protruded rim and a rear conic face, the external wall of the protruded rim is sealable with the wall of the water inlet to form a first water-blocking structure,

Abstract: A overfill protection device includes a first tubular member, a cylindrical piston slidably fitted within the first tubular member, a spring arranged within the first tubular member and fitted over an intermediate portion of the piston, a first and second O-rings fitted in the first and second neck portions of the piston respectively, a second tubular member having an upper portion having a cylindrical recess open at a top and engaged with the first tubular member, a plug arranged within the second tubular member and located under the piston, a float rod having a cam plate at an upper end thereof, and a float fixedly connected with a lower end of the float rod, whereby no gas will be allowed to flow through the overfill protection device when the pressure within the gas tank exceeds a predetermined level.

Abstract: A liquid level control apparatus for a flush tank includes an upstanding fill tube integral at its upper end with a valve housing carrying a flexible resilient pinch tube valve member. The valve housing defines a conduit which communicates with a downwardly extending tube parallel to the fill tube. A float has portions respectively receiving the fill tube and the downwardly extending tube therethrough so that the float slides vertically along the tubes as the water level in the tank varies. In one embodiment, an actuator rib on the float fits in a slot in the housing to directly engage the pinch tube valve member, and in another embodiment an actuator pivots on the housing and is coupled by linkage to the float. In the one embodiment an arresting flange on a resilient portion of the float engages an arresting flange on the fill tube for arresting upward movement of the float until the tank is full to provide a snap-action shutoff of the valve.

Abstract: The tap is designed for fitting onto a gas bottle and to allow both the drawing-off of gas and the filling of the bottle. To this end, the tap includes a filling circuit communicating with the inside of the bottle via a level valve which automatically closes at a specific level and a drawing-off circuit comprising at least one retention valve (22, 32) preventing filling of the bottle via the drawing-off circuit.

Abstract: A valve device for controlling the filling level of cylinders and the like ith liquefied gases, comprising an upper connecting body which can be coupled to a cylinder for liquefied gas and forming a tubular gas infeed element which ends with a coupling body which is associable with a lower connecting body in order to retain a membrane for closing openings for feeding gas into the cylinder, and a valve control element which is controlled by a float and interacts with the membrane; the device further comprising clinching means for the mutual clamping of the upper connecting body and the lower connecting body.

Abstract: A valve assembly is provided that prevents overfilling of vessels, such as tanks used to hold liquified gas, beyond a predetermined maximum level. Preferably, the valve assembly is for use with an LP tank attached at the bottom of a service valve thereof. The valve assembly has a valve member controlled for shifting by a float assembly that rises and falls with the fluid level in the tank. The float assembly keeps the valve member removed from the flow of fluid through the valve housing during tank filling operations in a chamber of a diverter member until the maximum fill level is approached when the float assembly allows the valve member to begin to shift into a blocking position projecting from the diverter member restricting flow into the tank and eventually cutting it off when the maximum fill level is attained.

Abstract: Pressurized fluid apparatus including a pressurized fluid container, a pipe arranged for flow therethrough of the pressurized fluid into the container, a valve operatively connected to an end of the pipe disposed in the container, and a float attached to the valve, wherein the float is buoyed generally upwards by the pressurized fluid filling the container, such that when the float has been moved a predetermined amount, the float closes the valve and substantially stops flow of the pressurized fluid into the container, and wherein the float is insertable through an upper opening of the container, and wherein the valve is rotatably attached to the pipe, the valve being closed by an angular upward movement of the float, characterized by the valve including a tube with a longitudinal bore having a longitudinal axis formed therein, and a piston slidingly disposed in the tube, wherein only when the float is generally perpendicular to the longitudinal axis, the piston sealingly abuts an internal end face of the tub

Abstract: A fluid cutoff system for preventing fluid flow through a hose whenever a desired amount of fluid has been deposited onto an area is comprised of a tube having a valve therein. An accumulator has a float floatably disposed therein with an extension attached to the float. The extension interacts with the valve such that whenever the float is in a relatively low position the extension holds the valve in an open position and whenever the float is in a relatively high position--corresponding to fluid being deposited in the accumulator--the extension disengages from the valve and the valve closes and prevents water flow through the tube.

Abstract: A float unit for controlling the filling level of liquid gases in vessels, ylinders and the like, comprises a valve body which can be associated with a cylinder and defines a fork body whereto a float member is swingably connected, the float unit further comprising a coupling element for removably coupling the float member to the fork body.

Abstract: A mechanical device for checking the level to which cylinders and the like are filled with liquid gases, comprising a feeder pipe anchored to the cutoff valve unit of the cylinder. At the lower end of the pipe there are provided openings which are connected to the inside of the cylinder and in a front region there is provided a closure membrane made of flexible material and centrally provided with at least one through hole. The membrane is peripherally locked between the rim of the end of the tubular element and a hollow body which is anchored coaxially to the feeder and is provided, in an upward region, with a cavity which allows the membrane to deform correspondingly in order to directly connect the free end of the tubular feeder body to the lateral openings thereof. The hollow body has a cavity which is coaxial to the hole of the membrane and leads into a chamber in which there is provided a shutter body movable axially by means of a cam which is associated with a floating device.

Abstract: A liquid level control apparatus for a flush tank includes an upstanding fill tube integral at its upper end with a valve housing carrying a flexible resilient pinch tube valve member and a pivoting actuator engageable with the pinch tube for opening and closing the valve. The valve housing is fixed to a head member defining a conduit which communicates with a downwardly extending tube parallel to the fill tube. A float has cylindrical portions respectively receiving the fill tube and the downwardly extending tube therethrough so that the float can slide upwardly and downwardly along the tubes as the water level in the tank varies. The actuator is pivotally connected to a linkage which extends outwardly through an aperture in the float and is pivotally connected to the float externally thereof. In one embodiment the aperture defines cam surfaces which engage the linkage to operate the actuator.

Abstract: There is described a device for shutting off the feed or discharge pipe (1) of a mobility separator, comprising a shutting flap (3) which in dependence on the position of a float (2) can be swivelled from an open position into a closed position about a rotational axis (5) extending transverse to the pipe axis. To create advantageous constructional conditions it is proposed to provide the feed or discharge pipe (1) with a sealing (6) at the end face for the shutting flap (3) pivotally mounted with a radial distance with respect to the feed or discharge pipe (1), where the housing (4) of said shutting flap axially adjoining the feed or discharge pipe (1) constitutes a discharge opening.

Abstract: A toilet having a water inlet valve apparatus has a flush tank with a water inlet tube connecting from a water source into the flush tank. A water cutoff is attached to the water inlet tube and has a valve seat in a floating valve element positioned in the water inlet tube to seat in the valve seat responsive to water in the water inlet tube so that the water is cut off from entering the toilet tank when the valve element is seated in the valve seat. A removably attached ballcock valve assembly is removably attached to the water cutoff valve and water inlet tube and has a valve opening member positioned to hold the floating valve element in the water cutoff valve from the valve seat when the ballcock valve is attached to the water cutoff valve. Removing the ballcock valve from the water cutoff valve closes the water cutoff valve and stops the flow of water into the tank from the water inlet tube.

Abstract: A plastic float valve wherein the piston is provided with a number of thin ridges as bearing surfaces which contact the valve bore, an annular cup seal to seal the valve bore and a tip washer having a truncated cone portion and mounted onto a tapered post on the piston, where the piston seals an inlet orifice by pressing the tip washer against an annular rim which is surrounded by a recessed channel.

Abstract: An valve assembly for automatically shutting off the flow of a pressurized liquid to a storage tank includes a cam that is rotated in response to the level of a liquid in the storage tank. A follower moves a poppet valve axially with a housing as a nonlinear function of rate of cam rotation. The poppet valve is moved to a closed position to terminate flow of a liquid to the storage tank whenever the liquid level within the storage tank reaches a predetermined level.