Abstract: A tank valve system comprises a main valve body, an overfill protection device (OPD), a gauge drive apparatus and a fuel level indicator. The OPD and gauge drive apparatus are configured to both be inserted through a narrow neck of a fuel storage tank prior to connecting the valve body to the neck. The valve body includes a primary fuel channel and a shuttle interface channel. The OPD includes an overfill float driving an overfill shutoff valve for controlling fluid flow from the primary channel into the tank. The gauge drive apparatus includes a gauge float, a shuttle, and an elongated extension body. The gauge float is movable with respect to the extension body between an uppermost position and a lowermost position, thereby driving the shuttle. The shuttle has a gauge actuation portion transportable within the shuttle interface channel to thereby actuate the fuel level indicator.

Abstract: A degassing chamber for an ozone solution system includes a cylindrical housing defining a cavity. A mixture of water and ozone gas is delivered to the cavity, the mixture containing excess ozone gas. A cylindrical float is positioned centrally within the cavity to rise in accordance with the mixture column within the cavity. A piston is connected to move in accordance with the float. When the mixture level rises above a threshold, the piston the piston moves upward and seals an ozone outlet. As a pressure of ozone gas in the degassing chamber increases, the float is forced downward causing the piston to open a channel to an upper ozone outlet through which excess ozone gas is released. After removal of excess ozone gas, a mixture of water and ozone gas is output from the degassing chamber which is suitable for use as a general purpose cleaner.

Abstract: An air release valve (10) includes a housing (11) fluidly connectable to a water line, a valve seat (12) secured to a portion of the housing (11) and formed with one or more air exit passageways (14), a seal (18) formed as a spring disc and including a stem (28) slidingly engaged with the valve seat (12), and a weight (20) coupled to the seal (18). In a sealed configuration the seal (18) presses against the valve seat (12) and seals the one or more air exit passageways (14) from air passing therethrough and in an open configuration the seal (18) is moved by the weight (20) so that the seal (18) is not pressed against the valve seat (12) and allows passage of air through the one or more air exit passageways (14).

Abstract: An overfill prevention valve cooperative with a standpipe includes a plug, float, and seat that do not exceed the standpipe in diameter. The valve and standpipe can be inserted into a liquid holding tank from below. Rising liquid lifts the float and plug until the plug is sealed against the seat. The float can be above the seat and connected to the plug by a rod penetrating centrally through the seat. A check valve can enable draining of the holding tank when the liquid is withdrawn from the standpipe. The holding tank can be a fuel tank of a liquid fuel burning torch. A central reservoir system can automatically fill a plurality of holding tanks having the disclosed valves installed therein and connected in series by a plumbing system. Filling can be automatically terminated when a backpressure within the plumbing system exceeds a specified threshold.

Abstract: A drain mast is provided that includes a unitary structure having a first housing, a second housing, and a plurality of tubes extending between the first housing and the second housing. The unitary structure is configured to provide a plurality of fluid paths through the drain mast, each fluid path extending through the first housing, one of the plurality of tubes, and the second housing.

Abstract: A backflow prevention apparatus is provided with a check valve and a float-type backflow prevention valve, these being installed in this order as one proceeds from upstream to downstream. The check valve comprises a valve seat; a valve member that closes the valve at the valve seat due to an upwardly directed restoring force; and a restoring force exerting member that exerts an upwardly directed restoring force on the valve member. The float-type backflow prevention valve comprises an annular valve seat; a float that rises in accompaniment to a rise in a water level of wastewater to close the valve at the annular valve seat; a guide member that guides movement of the float in a vertical direction; and a constraining member that constrains a lowermost position to which the float can move.

Abstract: A refuelling coupling having a shut off valve for a refuelling system has an annular member equipped with a connector for a pressure refuelling nozzle. A main sleeve extends down from the annular member within the skirt. The sleeve has an annular valve seat and a circular cylindrical distal end section. The seat has a conical face facing obliquely inwards and downwards. Below the valve seat, a plurality of peripherally arranged openings are provided in the end section. An end cap is screwed on across the very end of the lower portion, closing it with ports in the end cap. It also has an inner sleeve extending back up centrally to the level of the valve seat. The end cap is open inwards of the inner sleeve.

Abstract: Devices and methods for inhibiting movement of automatic pool cleaners (APCs) are described. Versions of the devices may cause pool water to bypass flowing through bodies of APCs. Alternatively, they may cause water flowing though bodies of APCs to bypass the associated motive force creators. The devices thus may constitute idler mechanisms, as they effectively prevent movement without requiring operation of the ultimate driver (i.e. the pump) to cease.

Abstract: A non-pressure valve is provided, and includes a tubular housing having an inlet and an outlet. The tubular housing forms a fluid flow path. The non-pressure valve also includes a sliding sleeve coupled with the outlet, a spring disposed between the sliding sleeve and the tubular housing, and a flow-through mount disposed within the tubular housing adjacent the sliding sleeve. The flow-through mount is coupled with a bulb. The bulb is configured to engage the sliding sleeve and impede the flow of fuel. The non-pressure valve also includes a hose fluidly coupling the non-pressure valve with a remote fuel vent. The flow-through mount may include a plurality of bypass openings positioned in the fluid flow path and configured to divert a portion of the fuel flow through a hose to the remote fuel vent.

Abstract: An attachment for a float valve may permit a larger flow of water than conventional float valves. A second outlet of the attachment may be dimensioned such that a greater amount of water is able to exit it than through an outlet of the float valve. This helps replenish the trough at a greater flow rate than what is possible through the use of the float valve alone.

Abstract: Provided is a fuel supply device that is able to achieve downsizing of a fuel pump in a configuration in which part of a fuel to be sent outside by driving of the fuel pump is able to be returned to an accommodation portion not provided with the fuel pump. A jet pump is provided in a vapor discharge pipe that is able to return a fuel from a fuel-pump main body to a second fuel receiving area. A sectional area of a passage of the vapor discharge pipe is changeable by a float valve.

Abstract: A noiseproof vent valve for a fuel tank is provided. A damping member installed in the vent valve has at least two elastic pieces, preferably the four elastic pieces. The movement of the float is absorbed by elastic deformation of the elastic pieces, and thus the float is prevented from coming into contact with a lower end forming the bottom of a valve body. However excessively the float fluctuates, no “clicking” contact noise occurs at the vent valve. As a result, the merchantability of a hybrid vehicle sensitive to low noise can be greatly increased.

Abstract: An air release vent valve having a valve body with an inlet port and a venting orifice; a direct float configured with an axial passageway; and a displaceable orifice closure rod deployed in at least a portion of the axial passageway, the displaceable orifice closure rod being longitudinally displaceable therein, wherein at least of portion of the displaceable orifice closure rod extends above the direct float and at least a portion of the displaceable orifice closure rod is configured to close the venting orifice when the water level in the valve body reaches a predetermined level. Also disclosed is a suspended surge prevention element that is suspended within the valve body at an adjustable distance from the venting orifice and configured to seal the initial vent orifice in response to a velocity of the flow of air through the valve body.

Abstract: The air release valve 10 includes an elongate valve body 12 including an elongate pipe section 14 that has a top wall 16 and a bottom wall secured to opposite ends thereof, thus defining a cylindrical internal chamber 20 within the valve body 12. The valve body 12 further includes a baffle plate arrangement 22 dividing the internal chamber 20 into a top part 24 and a bottom part 26. The bottom wall 18 of the valve body 12 defines an inlet 38 which is connectable to a water pipeline 69. The top wall 16 defines an outlet 40 which operatively communicates with the atmosphere. A valve seat 42, including an O-ring seal 44, surrounds the outlet 40 and permits blocking of the outlet 40 by a valve closure 46, which in combination with a float 48, forms a valve closure arrangement 50 of the air release valve 10.

Abstract: A flow control device for use in a supply line between a pressurized liquid container and a dispenser for the liquid, the flow control device comprising a chamber (200) having an inlet (114) for receiving liquid from the container; a base section (102) comprising a chamber outlet (122) for supplying liquid to the dispenser; a vent valve (110) for venting gas from the chamber (200); a float valve (106) comprising a float section (142) and a seat section (146) and movable to and from an open position wherein the chamber outlet (122) is open to liquid flow and a closed position wherein the chamber outlet (122) is closed to liquid flow; and a float valve opening mechanism (120) Wherein the float section (142) of the float valve (106) comprises a plurality of protrusions (143), at least some of which engage the inside (138) of the chamber (200) so as to locate the float valve (106) substantially in line with the chamber outlet (122).

Abstract: A fuel cutoff valve is equipped with a casing main body having a valve chamber that forms a connection hole that is an opening to the valve chamber side on an upper wall, a cover that forms a pipe which forms a pipe passage, and a float housed inside the valve chamber. The cover is equipped with a pipe extended part which is provided extending inside the linking chamber from the pipe in a tube shape facing the connection hole and on an substantially straight line, the pipe extended part has an extended passage 45 connected to the pipe passage, the extended passage has an inflow port that opens to the linking chamber, and the inflow port is provided on the side opposite the pipe with the connection hole as the center.

Abstract: One embodiment relates to an automatic fluid flow control device 1 for a fluid supply, the device comprising: an actuator 41 that carries or includes a magnet 43, the actuator being movable within a housing 3 from a first position corresponding to a normal fluid supply to a second position corresponding to a fluid oversupply, wherein the actuator 41 is removable from the housing 3 to enable the device to be cleaned, and the housing and actuator are configured so that the actuator can only be accommodated in the housing in an orientation that enables the magnet to exert a magnetic force to close a valve in the fluid supply as the actuator moves from the first to the second position.

Abstract: A water refilling plug for automatically filling battery cells has a cylindrical plug housing that includes a connector fitting for water delivery into a housing, as well as a valve, actuated by a float, having an annular valve body and a conical valve seat. The valve is arranged between an inflow channel and an outflow channel leading into the battery cell. In accordance with the invention, swirl-generating deflection channels are arranged between the annular inflow channel and the conical valve seat in a pattern distributed over a circumference in the plug.

Abstract: One embodiment of a blood transfusion device includes a drip chamber (10) comprising a bottom outlet (113); a filter (40) fixedly disposed in the drip chamber (10); and a float regulator (20) moveably disposed in the drip chamber (10) under the filter (40), the float regulator (20) comprising an inverted upper cup (21) including a top projection (212), a lower cup (22) secured to the upper cup (21), and a suction cup (23) secured to an underside of the lower cup (22). An inner diameter of the upper cup (21) is greater than an outer diameter of the lower cup (22). The projection (212) contacts an underside of the filter (40) when blood from a blood bag (90) sufficiently fills the drip chamber (10). The suction cup (23) falls to permanently close the outlet (113) when blood in the drip chamber (10) completely drains.

Abstract: The invention concerns a dual float rollover valve for use in a vehicle fuel tank assembly. The rollover valve may include a housing having an upper portion with a top end defining a vapor passage and an opposed bottom end, and an outer wall extending between the top and bottom ends and defining a channel extending therethrough; and a lower portion having a first end engaging with the bottom end of the upper portion, an opposed second end including a vent hole therethrough, and an outer wall extending between the first end and the second end and defining a chamber therein. An inner seal may be mounted between the channel and the chamber and include a seal bore extending from the channel to the chamber, with an upper float mounted in the channel, and a lower float, mounted in the chamber, having a buoyancy relative to fuel such that it is adapted to float on the fuel and selectively seal against the seal bore.

Abstract: Provided is a master cylinder hydraulic fluid flow control valve which can effectively decrease a pressure receiving area of a floating valve element when the floating valve element is seated on a valve seat, can favorably maintain a sealing function of a sealing member, and can suppress the increase of the number of assembling operation man-hours. A floating valve element 26a is vertically movably accommodated in a master cylinder connecting nipple portion 6b2, 6c2 which is hermetically mounted on a tandem master cylinder 4 by sealing members 23, 24 and forms a fluid passage between a reservoir tank and a tandem master cylinder 4 therein, and a valve seat 26b on which the floating valve element 26a is seatable is arranged in the master cylinder connecting nipple portion 6b2, 6c2.

Abstract: An auto-fill type float collar assembly is provided. The float collar assembly of the present invention has at least one curved flapper-style valve, preferably constructed of composite, non-metallic material. Each flapper of the present invention has a substantially 90° range of motion, and is closed via a torsion spring. Each flapper is held in the open (or “auto-fill”), position via an external shifting mechanism passing around, rather than through, the central flow bore of the assembly. A floatable actuation ball can be run with the tool, or pumped downhole, in order to selectively actuate the assembly and close the flappers when desired.

Abstract: A heated humidifier including an autofeed mechanism disposed within a humidifier chamber. The autofeed mechanism includes a housing, a float, a stem, and a sealing body. The housing defines an inlet, an outlet, a first chamber connected to the inlet, and a second chamber connected to the outlet and the first chamber by a channel. The float moves within the second chamber with the stem projecting therefrom and through the channel. The sealing body is within the first chamber and cooperates with the stem. In an open state, the sealing body is displaced from the channel to permit filling of the humidifier chamber. In a closed state, the sealing body seals the channel to prevent liquid flow to the outlet. A location of the sealing body relative to the channel is controlled by the float as a function of a humidifier chamber liquid level.

Abstract: The invention relates to an airing and venting valve for pipes and fittings carrying fluid, comprising a substantially cup-shaped valve body becoming smaller in cross-section towards the bottom for closing and opening a valve outlet, with a seal cup co-operating with a float of the valve, and a cup seal which is disposed between the valve body and seal cup and is able to move into different closing and opening positions lying across passage orifices of the valve body. By virtue of one aspect of the invention, the seal cup has an internal contour which becomes wider towards the top conforming to the external contour of the valve body. By virtue of another aspect, the valve body is disposed so that it is able to move against its seat at the valve outlet so that it can release and close a passage in the region of the valve body seat.

Abstract: A fuel shutoff valve includes a valve chamber, a casing, a float, and a shock absorber. The casing includes a body, a cylinder, and a seal. The float is accommodated in the valve chamber. The shock absorber includes a seat attaching to and detaching from the seal of the casing. The shock absorber includes a first arm, a second arm, a contact, and a locker. The first arm protrudes outward from the seat of the shock absorber diametrically, and exhibits elasticity. The second arm exhibits elasticity. The contact is disposed at the leading end of the second arm, and comes in contact with the float. The locker is disposed at a diametrically-outer-side leading end of the first arm, and locks to the body of the casing when the shock absorber is positioned at the lowermost level in the valve chamber.

Abstract: A gas purge valve comprising a housing (12) formed with an inlet (24) and an outlet (30) formed with a valve seating (54), and a sealing assembly (38) comprising a sealing member (70) displaceable between an open position and a closed position. The sealing assembly (38) is supported by an external support lever (42) mechanism extending outside the housing (12), to thereby displace the sealing assembly (38) into sealing engagement with the valve seating at the closed position.

Abstract: An autofeed mechanism for controlling the flow and level of a fluid. The mechanism includes a body with an inlet chamber and a float chamber. A seat permits fluid communication between the two chambers. A float and a ball cooperate to permit, or deny, access to the seat. Fluid first enters the inlet and fills the chamber and then enters the float chamber by passing through the seat and exiting via the exit. Initially, the weight of the float keeps the ball away from the seat, but eventually the fluid level rises high enough that the action of the float on the ball decreases to a level that is overcome by the buoyant force of the ball and other fluidic forces resulting in the ball moving away from the ball support. Finally, the ball rises enough to seal against the seat thus stopping the flow of fluid.

Abstract: A fuel cutoff valve is provided with a casing that forms a valve chamber that is connected to a connection conduit, a float mechanism that is housed so as to be able to rise and fall in the valve chamber, and a spring that supports the float mechanism. The float mechanism is structured through an assembly of a first float body and a second float body, where the first float body is provided with a valve portion that opens and closes the connection conduit and provided with a storage chamber that is open on the bottom, where the second float body is housed in the storage chamber to be assembled into the first float body.

Abstract: A float-responsive valve includes a valve actuator that is selectively responsive to operation of a float to move from a first position to a second position in which the valve actuator holds the valve element in its open position. When the valve actuator is in the second position thereof, fluid pressure that would otherwise tend to force the valve element toward its seat is essentially incapable of closing the valve element. Preferably, a force vector applied through a flapper-type valve actuator forms an essentially nonnegative, more preferably generally collinear, angle with a bisector line passing through a pivot axis of the valve actuator and a primary contact point between the valve actuator and the flapper.

Abstract: A float assembly for a multifunction fuel vapor vent valve with a float having a recess formed in the upper surface of the float with a slot formed in the side of the float and communicating with the recess. A raised surface portion is formed in the bottom of the recess and downwardly extending projections are formed in the slot at the recess. A flexible wafer like valve disk is inserted in the slot and deformed or curled to pass under the projections and over the raised surface and into the recess. When fully received in the recess the disk returns to its flat configuration; and, the downward projections prevent removal without distortion. Radially inwardly projections about the recess retain the disk for limited lost motion in the direction of float movement.

Abstract: A method is disclosed for the manufacture of a float (30) comprising the following steps: providing a mould (10) having a first enclosure (12) opening into a second enclosure (14) of greater dimensions than the first enclosure (12), and an inlet (16) into the first enclosure (12), the first and second enclosures (12, 14) together defining the shape of the float (30); injecting a mixture comprising plastics material and blowing agent into the inlet (16), such that the mixture passes through the first enclosure (12) and then into the second enclosure (14); and causing or allowing the mixture to set, thereby forming the float (30). The float (30), the mould (10) and a fluid storage chamber (60) including the float (30) are also disclosed.

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: The invention concerns an air transfer valve which automatically vents accumulated air from pressurized liquid reticulation pipelines or vessels. The valve (10) has a housing (12) which is connectable to the pipeline or vessel. The housing has a first outlet (38) venting to atmosphere and a control chamber (60) which is exposed to internal pressure in the housing via a control chamber inlet. A first valve closure (34) can move to open and close the first outlet. This valve closure is exposed to control chamber pressure tending to move it to close the first outlet and to internal housing pressure tending to move it to open the first outlet. When the housing is pressurized the first valve closure (34) is maintained in a closed position by virtue of an unbalanced pressure force acting on it that is attributable to exposure of the valve closure to atmosphere through the first outlet. There is also a control chamber outlet (36) from the control chamber (60) to atmosphere.

Abstract: A liquid level control apparatus for a flush tank includes a valve mechanism communicating with a fill tube and operable between open and closed conditions, two floats, at least one of which is coupled to the valve mechanism for closing it when the at least one float reaches a predetermined height, and structure interconnecting the floats so as to substantially prevent their vertical movement until a predetermined liquid level is reached corresponding to the predetermined height, thereby causing sudden movement of the at least one float to the predetermined height and sudden closing of the valve.

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: A buoyancy flushing apparatus is disclosed which comprises a reservoir for accumulating liquid, having an inlet for receiving liquid and an outlet chamber recessed in a bottom wall of the reservoir. The outlet chamber includes an outlet for draining liquid out of the reservoir. The apparatus further comprises an outlet valve movable between a down position where liquid accumulates in the reservoir and a raised position where liquid accumulated in the reservoir is flushed out via the outlet. The outlet valve comprises a ballast unit sized and shaped to fit loosely in the outlet chamber when said valve is in the down position; and a float unit topping the ballast unit to move the valve in the raised position by buoyancy when a sufficient amount of liquid is accumulated in the reservoir, thereby providing a passageway for liquid between the bottom wall of the reservoir and the valve leading to the outlet in the outlet chamber to flush liquid out of the reservoir.

Abstract: The present invention relates to an adjustable valve for a toilet in which the valve remains in a lower setting unless it is activated by the user to a higher setting and automatically returns to the lower setting after flushing the toilet. The amount of water used for each flush is dependent on the water level in the toilet tank. The water level in the tank is set by adjusting the height of the valve assembly. The valve assembly can be activated by the user to raise the height of the valve assembly and maintain the height using a release clip, thereby increasing the amount of water in the tank. When the handle is pressed to flush the toilet, the release clip is pulled back by a chain extending from the handle and the adjustable valve springs back to the lower setting.

Abstract: A lavatory flush tank silent-operating fill device has a silencer extending along an axis and through which a stream of water flows; a number of channels are defined inside the silencer by a bundle of substantially straight, parallel tubes housed inside the silencer and parallel to the axis, and into which the stream of water is divided; and the flow section of the channels is such that flow of the water inside is substantially laminar.

Abstract: The object of this invention of a float for liquid waste disposal apparatus enables the content inside a container to be easily visually recognizable and allows a faster and steadier solidification of an absorbed liquid waste. The connection plates 5c connects the annular member 5a serving as the guide member to the outer peripheral portion of the cup portion 5b retaining the water-absorptive material 6 wherein the annular member 5a is restrained by the inner wall 26 of the lying member L for preventing the float 5 from revolving in the vertical direction. The liquid waste 21 absorbed from the upper portion and into the lying member L flows downward via the flow path structured with the interstitial portion 27 formed between the annular member 5a and the cup portion 5b and the interstitial portion 28 formed between the inner wall 26 of the lying member L and the annular member 5a.

Abstract: A fluid tank valve assembly of the type employed for water tanks for toilets has a tank refill valve located atop a fluid inlet supply tube. The refill valve has a lever that is raised and lowered to open and close the valve. An inverted, cup-shaped hood is positioned atop the valve and a float is located about the skirt of the hood and secured thereto by the force of friction. The float can be moved longitudinally along the skirt of the hood in order to vary the water level at which the hood bears down upon the lever arm or is lifted from the lever arm, thereby varying the water level at which the valve is actuated. The valve itself is equipped with a metering pin that is configured to reduce the likelihood of clogging in the longitudinal passage of the core of the valve diaphragm.

Abstract: A valve (10) for a fluid tank, comprising a housing formed with one or more inlet (28) and outlet (20) ports, side walls and a seating wall (14) portion supporting a float-type valve member. The valve member is axially displaceable within the housing responsive to fluid level within the tank, between an uppermost position and a lowermost position, and has a top and a bottom end and a bearing portion facing the seating wall portion of the housing. Either one or both of the seating wall portion of the housing and the bearing portion of the valve member, are fitted with one or more dampening members (46) for diminishing impacting noise of the valve member encountering the housing upon displacement into the lowermost position.

Abstract: A valve in a fluid treatment system adapted for controlling the flow of fluid between a source and a treatment media disposed in a treatment chamber. The valve includes a housing having a fluid passageway between an inlet and an outlet; a containment chamber; and a sealing member reciprocal between a first position in which the sealing member is retained in the containment chamber out of the flow of fluid in the passageway and a second position that seals the outlet. The containment chamber also includes a drain opening, which can be a venturi, for emptying the containment chamber of fluid.

Abstract: An aboveground tank auto-limiter is provided for preventing the overflow of fluid via storage tanks. The auto-limiter includes a valve assembly insertable downward through the top of a fill pipe of the fuel storage tank. The valve assembly has a cylindrical valve housing providing a fluid flank passage directing fuel downward into the storage tank under pressure. A hollow cylindrical float is provided in the valve assembly and is coaxially mounted along the outside surface of the valve housing leading into the storage tank. The float moves vertically to slide freely along the upper portion of the valve housing with the fluctuation of the fuel level within the tank. A series of linkage assemblies communicates the cylindrical float to a poppet located downstream from the float, wherein the float is upstream from the poppet. The poppet is seated in the closed position.

Abstract: A pipeline vent valve comprising a body (13) defining a chamber (A) having an inlet (17) towards its lower end which is adapted to be connected to a pipeline and an outlet (21) towards its upper end, the outlet defined by a valve seat, a first valve member (23) supported in the chamber to be moveable between a first position at which it is in sealing engagement with the valve seat and a second position at which it is out of engagement with the valve seat, the first valve member in its movement to the first position being responsive to the magnitude of the gaseous flow rate through the valve seat to be moveable to the first position on the gaseous flow rate exceeding a desired level, the first valve member also being responsive to the level of liquid in the chamber and being adapted to close when the liquid level in the chamber exceeds a predetermined level, the first valve member having in opening providing communication to each side of the first valve member, a second valve member fixed to the first valve me

Abstract: A snap-action piloted fill valve for controlling the level in a liquid storage tank, the valve having a float and a weight cup that are adjustably interconnected by an elongated sleeve slidably disposed on a stem extending upwardly from a valve body mounted inside a tank, the weight cup being further connected to a snap-action beam attached to the valve body. The snap-action beam controls operation of a pilot, which in turn causes the fill valve to open when the beam is in its upward position and to close when the beam is in its downward postion. Use as a toilet valve is also disclosed.

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 water management system for a motor vehicle in which water is collected from the condenser (1) of the air-conditioning unit, stored in a master water tank (5) and distributed therefrom to the battery (15), screen wash jet (27) and radiator (37). The vehicle owner is thus spared the inconvenience of regularly checking and topping up the water supply for these items. The risk of breakdown is also reduced. In another aspect of the invention, a wet battery (15) incorporates a plurality of float valves (75) for regulating the fluid level in respective cells (61, 63) of the battery. Water is passed through a common channel (23) into which the float valves (75) open when the fluid level is below a preset limit. The battery fluid is thereby automatically kept at the required level for optimum performance and lifetime of the battery.

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 stop valve to terminate flow of liquid there through when the level of the liquid reaches a desired level in a container. The stop valve includes a master diaphragm valve (38) to regulate the flow of liquid through the valve and a pilot diaphragm valve (10) controlling the master valve. The pilot diaphragm valve (10) is subject to the position of a float (37) on the liquid in the container.

Abstract: A limit control device for filling a liquid storage tank has a hollow upper body, a plunger tube integral with the upper body, a valve mounted in the hollow upper body and capable of moving between an opening position and a closing position, a valve seat arranged in the hollow upper body and whereon the valve is urged to rest in a closing position, a floater vertically mobile in a chamber arranged at least partially inside the plunger tube. The device is characterized in that the floater is integral with a moving element forming a piston, the moving element being displaced by thrust of the liquid acting on one of its ends.