Abstract: A hybrid water storage system for an aircraft includes separate variable volumes for respectively storing/holding potable water and gray water occupying a common container. The hybrid water storage system is generally configured to draw potable water from a first variable volume in order to provide fresh water to one or more aircraft appliances (e.g., sinks, showers, ice-makers, etc.), and the used potable water (i.e., the potable water that is collected in drains from the aircraft appliances), referred to herein as gray water, is routed to a second variable volume that occupies the same container as the first variable volume.

Abstract: An opening/closing device according to the present invention includes a gate, a fall prevention unit, a support release unit, a first float, a floating prevention unit, a second float, and a floating prevention release unit. The gate receives a flow of fluid, and is able to fall down toward a downstream direction of the flow. The fall prevention unit supports the gate, thereby preventing the gate from falling down. The support release unit releases the support for the gate by the fall prevention unit. The first float is arranged on an upstream side of the gate, is arranged on one of the left side and the right side of the gate viewed from upstream, and is less in the specific gravity than the fluid. The floating prevention unit prevents the first float from floating.

Abstract: A valve assembly able to be mounted with a liquid container, the valve assembly comprising: a housing having a passageway that extends through the housing; a breather float valve mounted within the housing, the breather float valve movable between an open position to allow gas to pass through the passageway and a closed position that prevents liquid from passing through the passageway; a liquid inlet, forming part of the housing, the liquid inlet allowing fluid to pass into the housing; and an inlet float valve mounted within the housing, the inlet float valve movable between an open position that permits the flow of liquid through the liquid inlet and a closed position that prevents the flow of fluid through the liquid inlet.

Abstract: A valve assembly (I) for controlling the supply of water to a reservoir. The assembly (I) has a main body (2) having a floor (4) and side walls (3), an upper float (15) pivotably mounted within the main body (2) and a lower float (21) pivotably mounted beneath the main body (2). The floor (4) of the main body (2) having an aperture. The upper float (15) is upwardly movable to a position to shut off the water supply to the reservoir; and the lower float (21) is movable upwardly to seal the aperture in the floor (4) of the main body (2) thereby to prevent water draining from the main body through said aperture or from prematurely filing.

Abstract: The double action float valve is connected to a single pipe and a tank and controls both the filling and discharge of the tank. The double action float valve utilizes a valve body, a heavy filling obturator positioned within the valve body, a light inverse obturator positioned within the heavy filling obturator, and a float connected to the heavy filling obturator. When the inflow pressure from the pipe is greater than the outflow pressure of the tank, the tank is filled until the float reaches a predetermined level. When the outflow pressure of the tank is greater than the inflow pressure, the double action float valve is automatically reconfigured to discharge the fluid from the tank into the pipe.

Abstract: A drain assembly includes a closing element having a lower surface and one or more floating elements extending from the lower surface. A receiver element has an inner ring and an outer ring and one or more receptacles disposed between the inner ring and outer ring. The receptacles receive corresponding floating elements and the receiver element has one or more inlet openings associated with the outer ring and one or more outlet openings associated with the inner ring. The one or more inlet openings receive a liquid to fill the receptacles to provide a lifting movement to the one or more floating elements within the corresponding one or more receptacles to lift the closing element. As the closing element lifts, the one or more receptacles fill with the liquid and drain the liquid from the one or more outlet openings.

Abstract: An opening/closing device 1 according to the present invention includes a gate 10 that receives a flow of a sewage W in an upright state, and can fall toward a downstream side of the flow and a first spring 52a that generates a force for bringing the gate 10 into an upright state, wherein the first spring 52 generates a force insufficient for bringing the gate 10 into the upright state if the gate 10 is in a fallen state, and generates a force sufficient for bringing the gate into the upright state if the gate 10 is tilted by an angle equal to or less than a predetermined angle.

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 fuel tank for vehicles has a filler tube and a filling level limiting device, with the filler tube comprising, in the interior of the fuel tank, a closing device which interacts with an actuating device which is composed of: a) a frame which is fastened in the interior of the fuel tank and which has a force store which actuates the closing device; b) a locking arrangement which holds the force store in the stressed state; c) a release mechanism which is operatively connected to a float; and d) a stressing mechanism for stressing the force store. The actuating device ensures that a flap closes precisely when a nominal filling level is reached, and does not open again even under intense fluctuation of the liquid level.

Abstract: An opening/closing device includes a gate that receives a flow of a sewage, and can fall toward a downstream side of the flow, a fall prevention unit that prevents the gate from falling by supporting the gate, a support release unit that releases the support for the gate by the fall prevention unit, a first float that is arranged on the upstream side of the gate, and is smaller in specific gravity than the sewage, a surfacing prevention unit that prevents the first float from surfacing, a second float that is arranged on the upstream side of the gate, above the first float, and is smaller in specific gravity than the fluid, and a surfacing-prevention release unit that releases, resulting from surfacing of the second float, the prevention of the surfacing of the first float by the surfacing prevention unit. Further, the support release unit is activated resulting from surfacing of the first float.

Abstract: A low profile backwater valve includes a hollow valve body having an inlet, an outlet, and a bottom. A pivoting valve member is pivotally movable between a normally open position along the bottom of the valve body and a closed position sealing the inlet. The valve member has a hinge end, a remote end, and opposed sides. A float is positioned as an appendage along at least one of the opposed sides of the valve member, such that the float adds buoyancy to the valve member causing the valve member to float into the closed position in the presence of a backflow.

Abstract: This invention pertains to a sequencer for controlling the distribution of fluid input into a tank to at least two outlets using a plurality of cells connected to actuate a respective floating outlet. Each of the cells has a relatively uniform construction comprising an enclosure and a float. Each enclosure has an inlet arranged at one end to allow fluid therein and offset openings at an opposite end. The enclosure also is configured to accept the float in an inner cavity and arranged so as to allow the fluid therein to cause said float to move within said enclosure. Each cell is further arranged in pairs of a lift cell and a trigger cell adapted to actuate a floating outlet. Each float has an inclined upper surface configured to transfer a ball through the offset openings as the fluid causes the float to rise and fall from each cycle of actuate a respective floating outlet. The sequencer being particularly adapted to a system and method for dosing a septic system having two or more disposal fields.

Abstract: A downspout water collection and overflow system employs a downspout water diversion and overflow device which includes a body displacing a downspout section, and a plate supported in the body. The body, being hollow, has upper, lower and side portions defining top, bottom and side openings. The plate is inclined to extend laterally across the body between the upper and lower portions and through the side opening of the side portion. The plate blocks flow of water directly from the top to bottom opening of the body, diverting water flow through the side opening to a storage tank. The plate divides the side opening into upper and lower passages which allows inflow of water from the upper body portion through the upper passage above the plate to the tank and overflow of water from the tank through the lower passage below the plate to the lower body portion.

Abstract: A float valve system for controlling an amount of liquid in a chamber is disclosed that includes a first valve seat and a second valve seat. Liquid enters the chamber in a first direction to the first valve seat and is transferred in a second direction to the second valve seat. First and second actuating members are provided to selectively open and close the first valve seat and the second valve seat, respectively. A first float is coupled to the first actuating member so as to close the first valve seat upon fluid in the chamber reaching a first predetermined level and a second float is coupled to the second actuating member so as to close the second valve seat upon fluid in the chamber reaching a second predetermined level that is different from the first predetermined level.

Abstract: Disclosed herein is a water level controlling device for intercepting the supply of water to the water reservoir of a water purification system. The water level controlling device includes a water reservoir having a plurality of diaphragms which are provided on the lower surface of the water reservoir in such a way as to move up and down. A flow body is mounted to the lower surface of the water reservoir and defines a water circulation path, with a plurality of control parts provided in the circulation path to block the flow of water by the corresponding diaphragms. A plurality of floaters moves up and down in the water reservoir according to the water level. An actuator moves each of the diaphragms to the corresponding control part as each of the floaters rises, thus intercepting the flow of water passing through the control part.

Abstract: An oil pan is provided with an oil pan separator that partitions a first chamber that communicates with a moving part inside a cylinder block and a second chamber outside the first chamber. A communicating hole is provided to a bottom panel of the oil pan separator. The communicating hole is shielded from a strainer.

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: This invention pertains to a sequencer for controlling the distribution of fluid input into a tank to at least two outlets using a plurality of cells connected to actuate a respective floating outlet. Each of the cells has a relatively uniform construction comprising an enclosure and a float. Each enclosure has an inlet arranged at one end to allow fluid therein and offset openings at an opposite end. The enclosure also is configured to accept the float in an inner cavity and arranged so as to allow the fluid therein to cause said float to move within said enclosure. Each cell is further arranged in pairs of a lift cell and a trigger cell adapted to actuate a floating outlet. Each float has an inclined upper surface configured to transfer a ball through the offset openings as the fluid causes the float to rise and fall from each cycle of actuate a respective floating outlet. The sequencer being particularly adapted to a system and method for dosing a septic system having two or more disposal fields.

Abstract: A fuel cutoff valve includes a first float mechanism housed in a first valve chamber of a casing, and a second float mechanism housed in a second valve chamber. During fueling operations, when an intake opening becomes blocked by fuel, the second float mechanism closes second vent holes, and the first float mechanism closes a connecting passage. At times other than fueling operations, when the intake opening becomes blocked by fuel, because the fuel tank interior and the first and second valve chambers, communicate through the second vent holes in addition to the first vent holes, differential pressure between tank internal pressure and pressure of the valve chambers does not rise to the point of actuating the closing operation of the first float mechanism, and the fuel tank FT does not become sealed.

Abstract: A valve for controlling the level of liquid within a chamber (10) is disclosed. The valve comprises a liquid inlet (30) and a primary float (40) that is movable in response to a change in the level of liquid (20) within the chamber (10) between an open configuration in which liquid (20) is able to flow through the liquid inlet (30) into the chamber (10) when the liquid (20) within the chamber (10) is below a predetermined acceptable level, and a closed configuration in which liquid (20) is prevented from flowing through the liquid inlet (30) into the chamber (10) when the liquid within the chamber (10) is at or above the predetermined acceptable level.

Abstract: An improved fill valve has a pivot valve body that is pivotally suspended immediately below a float housing and is movable between two positions. In a first position, the pivot valve body blocks the flow of water from the float housing. In a second position, the pivot body allows the flow of water from the float housing. The pivot valve body has two top compartments, each separated from the other by a wall. The first compartment retains an amount of water in it. The second compartment functions as a water flow restriction apparatus and includes an upwardly-extending member for sealing off a check valve that is disposed within the bottom of the float housing. The fill valve also includes structural elements that allow the water to trickle into the float housing at a very slow rate. The fill valve can be re-set for normal toilet tank operation.

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 surge flushing device for wastewater systems and the like includes a wastewater channel having an arc-shaped wall portion, as well as a flushing blade element having a marginal portion thereof shaped to selectively mate with the wall portion of the channel, and mounted for shifting in a direction generally perpendicular to the direction of flow in the channel between a lowered, closed position, and a raised, open position. A gasket has a base portion supported on the marginal portion of the blade element and an elastically deformable lip portion which protrudes radially outwardly therefrom, and abuttingly engages the wall portion of the channel when the blade element is in the lowered, closed position, in an elastically deformable curved shape which opens outwardly in a direction opposite to the direction of flow in the channel to selectively form a secure seal therebetween.

Abstract: Disclosed herein is a water level controlling device for intercepting the supply of water to the water reservoir of a water purification system. The water level controlling device includes a water reservoir having a plurality of diaphragms which are provided on the lower surface of the water reservoir in such a way as to move up and down. A flow body is mounted to the lower surface of the water reservoir and defines a water circulation path, with a plurality of control parts provided in the circulation path to block the flow of water by the corresponding diaphragms. A plurality of floaters moves up and down in the water reservoir according to the water level. An actuating means moves each of the diaphragms to the corresponding control part as each of the floaters rises, thus intercepting the flow of water passing through the control part.

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 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 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: A dual-action vent check valve is disclosed. The valve includes a first check valve which is responsive to elevated fluids inside the valve. A second check valve is responsive to elevated fluids external to the valve. The first check valve prevents overflow from a vented structure, such as a sewer out-fall line, from passing through and out of the valve, thereby preventing spills. The second check valve operates to prevent floodwater from passing into an underground structure, such as a sewer, through the vent. One embodiment of the invention includes a basket for enclosing a deodorizing material inside the valve for deodorizing gases which pass through the valve.

Abstract: To prevent a fuel liquid surface within a float chamber from rising when a liquid surface change occurs to make a float rotate so that a float valve opens a valve seat hole, a first float (F3) is arranged in one outer side from one end (F4) of the bearing portion (F1) and in one side (B), one end (F4) of the bearing portion (F1) and the first float (F3) are connected by a first connecting arm portion (F6), a second float (F7) is arranged in another outer side from another end (F8) of the bearing portion (F1) and in one side (B), another end (F8) of the bearing portion (F1) and the second float (F7) are connected by a second connecting arm portion (F19), a first buffer rib (F12) is integrally formed between an outer side surface (F6A) of the first connecting arm portion (F6) and another side surface (F5) of the first float (F5), and a second buffer rib (F13) is integrally formed between an outer side surface (FIOA) of the second connecting arm portion (F10) and another side surface (F9) of the second float (F7

Abstract: A gas/liquid phase separator for an electrolysis cell includes a vessel and a float in operable communication with each other. The vessel includes a fluid inlet and first and second fluid outlets. A fluid stream comprising gas and liquid is received in the vessel through the fluid inlet, and at least a portion of the gas exits the vessel through the second fluid outlet. The float is configured to interface with the first fluid outlet and either maintain or prevent fluid communication across the first fluid outlet when the float is in at least partial contact with the first fluid outlet.

Abstract: A diverter valve for selectively passing water from a ballcock valve directly to a water storage tank or to the rim of a toilet. It includes a diverter plunger which places a deflector into the path of water from the ballcock, and a float which removes the deflector from the lumen when the ballcock valve is closed and the water level is sufficiently high, and lowers the plunger when the water level is sufficiently low.

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: A fluid-sampling apparatus is disclosed. The apparatus includes a valve assembly, an overflow chamber assembly, a vacuum assembly and a sample bottle mounting assembly in particular arrangements. In certain preferred embodiments the overflow chamber assembly has an inner vessel, preferably a standpipe, within an outer vessel which forms an overflow chamber in which fluid from the standpipe can be viewed. The valve assembly preferably includes a sampling valve with an outer shell, an insert member and a pivotable valve member therein. The pivotable valve member preferably has a main body portion with first and second circumferential grooves therein and a diagonal bore therethrough for properly directing fluid from and through particular ports in the insert member based on the position of the valve member.

Abstract: According to the invention, in the case of a multifunctional valve for a vehicle container, comprising a first opening which can be closed by means of a first closing body as a function of the filling level of the container and is intended for ventilating the tank as it is being filled, a second opening which can be closed by means of a second closing body and is intended for ventilating the tank during operation, the two closing bodies automatically going into their closing position if the vehicle takes up an excess sloping position or undergoes a roll-over action, the two closing bodies (13, 18) can be brought into the closing position by a respectively assigned first or second float body (11, 17) which are of lower density than the medium in the container, and in the event of a roll-over action, a mechanical device (ball 19) acts upon the two float bodies (11, 17) to counter their buoyancy and keep the closing bodies (13, 18) in the closing position.

Abstract: An improved float and valve assembly for a liquid-gas accumulator including a buoyant float having a density selected in accordance with the working pressure, a float which can be lengthened or shortened, and friction and drag is reduced by optimizing the bore to rod length, honing coacting parts, providing a crown engaging the spring, and providing grooves in the exterior of the valve stem.

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: An automatic regulating valve apparatus comprises a main valve unit, and a pilot valve unit operatively connected to the main valve unit to control the main valve unit. The main valve unit comprises a main valve casing, a main valve element disposed in the main valve casing, and a main valve driving member disposed in the main valve casing together with the main valve element and having a pressure receiving area greater than that of the main valve element, the main valve element is disposed on the upstream side of a valve seat so as to form a restricting passage between the main valve element and the main valve seat, and the main valve driving member is disposed for sliding movement in a space defined by a cylindrical wall formed in the main valve casing so as to define a main valve driving pressure chamber together with the cylindrical wall.

Abstract: A fluid flow rate control device, especially adapted for controlling the flow of IV fluid to a patient, comprises a first vented fluid chamber having an upper fluid inlet end with a hollow spike which enables fluid connection with a conventional fluid container. A free floating float valve in the first chamber blocks the flow of fluid into the first chamber from the fluid container according to whether or not the fluid level in the first chamber is at a preestablished fluid level, thereby providing a constant pressure head regardless of fluid level in the fluid container. A lower end of the first chamber is connected, through a flow regulator, such as a screw-type valve, to an upper inlet end of a second, vented, drip chamber, the lower end of which is adapted for connection to a discharge tube, such as an IV tube.

Abstract: A container having a floor with an upper inner face and a lower outer face is provided with a drain having a tubular housing extending between the faces and a partition formed with a hole, subdividing the housing into an upper compartment and a lower compartment, and forming at the hole an upper valve seat and a lower valve seat. Respective floatable upper and lower valve bodies in the compartments sealingly engageable with the respective valve seats. Thus with this system when the upper compartment fills with liquid it floats up the upper ball to unblock the hole in the partition and let this liquid drain out. If, however, water rises in the lower compartment, it will float up the lower ball to block the passage and prevent this liquid from flowing up through the passage into the container.

Abstract: A fluid level management system for controlling a fluid level contained within a reservoir housing is described. The fluid level management system utilizes two separate predetermined fluid levels, a first and a second spaced below the first, to create a fluid level differential though which a control apparatus actuates a single activation switch. Use of the fluid level management system in conjunction with a pump for removing the fluid contained within the housing is further described. The pump is responsive to the control apparatus actuating and deactuating the switch depending on the fluid being at the first or second predetermined fluid level, respectively.

Abstract: A two-chamber fluid control valve for a water softener system is provided. The valve includes a primary chamber having a primary inlet for passage of a primary fluid into the primary chamber and a primary outlet for passage of fluid out of the primary chamber, and a primary valve member disposed for closing the primary outlet. The valve also includes a secondary chamber having a secondary inlet and a secondary outlet fluidly communicating with, and for passing the secondary fluid into, the primary chamber, and a secondary valve member disposed for closing the secondary outlet to prevent the passage of air out of the secondary chamber and into the primary chamber, whereby primary and secondary fluids can be combined in the primary chamber prior to flowing out of the primary outlet of the primary chamber. The valve allows a homogeneous brine/secondary chemical solution to be formed therein and fed to a water softener tank to regenerate and treat the tank and the ion exchange medium therein.

Abstract: An improved float valve assembly is provided for regulating water inflow to a purification module of a water purification system, such as a reverse osmosis purification module or the like. The float valve assembly is mounted within a reservoir for receiving and storing relatively purified water produced by the purification module, and includes a valve unit defining a vertically extending flow path from a tap water source to the purification module. A primary float carried on a float arm responds to rising and falling water level within the reservoir for respectively closing and opening a primary banjo valve mounted along the flow path. An over-center switch provides snap-action closure of the primary valve in response to rising water level, and the primary float is mounted on the float arm for a limited range of lost motion to accommodate this snap-action valve closure.

Abstract: The invention concerns a device for operating a mechanism (5) of a rinsing fixture, in particular for operating a closing and opening mechanism or a locking mechanism of a rinsing fixture. It shows a float (28) and a first hydraulic or pneumatic force means (15) that shows a regulating unit (16) that is controllable through a float. A second hydraulic or pneumatic force means (9), which has a regulating unit (8) that is connected hydraulically or pneumatically with the regulating unit of the first force means, has an active connection with the mechanism (5).According to the invention it is planned that upon rising the float, in opposition to a restoring force, drives the regulating unit of the first force means for operating the mechanism, that the float upon sinking is uncoupled from the regulating unit of the first force means, and that a valve (12) is arranged in the connection (11, 13) of the two force means.

Abstract: A float valve assembly is provided for regulating water inflow to a purification module of a water purification system, such as a reverse osmosis purification module or the like. The float valve assembly is mounted within a reservoir for receiving and storing relatively purified water produced by the purification module, and includes a valve unit defining a vertically extending flow path from a tap water source to the purification module. A primary float responds to rising and falling water level within the reservoir for respectively closing and opening a primary banjo valve mounted along the flow path. A secondary banjo valve is mounted along the flow path at a location above the primary valve, and, in the event of primary valve malfunction, is closed by a secondary float responsive to rising reservoir water level. In a preferred form, the secondary valve remains closed upon subsequent descent of the water level, and is manually re-opened by depression of a reset button.

Abstract: A water refilling control mechanism for a water tank comprises a main float sliding along an inlet pipe and further having an extruder located at the bottom thereof for connecting with an extension bar and further connecting to a supporting bar and a water valve on top of the inlet pipe. The main float further includes a dual-stair-shape valley atop to accommodate an auxiliary float having a restraint arm with its upper end connecting with a restraint cam located on top of the inlet pipe. By providing a C-shape end to the restraint arm connected engaging the restraint cam with an extruding arm, the auxiliary float can be restrained in the valley by a bump at the lower end of the restraint arm and can be rotated clockwise to release the main float as the water level reaching a substantial height.

Abstract: A constant level of fluid (8 or 106) in vessel (1 or 104) is maintained using a reservoir (5 or 102) and a tank (4 or 101). Float valves (9 or 107) which raise and lower with the level of fluid in the reservoir are used to selectively close off fluid passages (13 or 109) from the tank into the reservoir. Until the desired level of fluid is reached in the reservoir, the reservoir continuously provides fluid to the vessel. Once fluid flow into the reservoir is stopped, flow from the reservoir into the vessel also stops. The vessel can be positioned adjacent to or remote from the reservoir.

Abstract: A float of synthetic resin for carburetors includes a base having a mounting portion for mounting the float in a float chamber; two float parts arranged opposite to each other, swinging in accordance with an amount of fuel in the float chamber; and an arm portion connected to the base at one place in its longitudinal direction, connecting the two float parts to its ends. The arm portion is configure so that a sectional area perpendicular to the longitudinal direction is small in a region surrounded by the two float parts and is larger in an opposite region. In this way, the arm portion is not deformed in the region surrounded by the two float parts in the cooling process of molding fabrication, and a float for carburetors of predetermined shape can be manufactured at low cost.

Abstract: A float valve assembly has a liquid passage with upper and lower ends opening to upper and lower liquid receiving spaces, valve seats about the upper and lower ends of the passage, and upper and lower float valves within the spaces movable into and from seating contract with the valve seats to open and close the passage ends in response to rising and lowering liquid levels in the spaces. The opening movement of one float valve is adjustable to regulate flow rate through the passage.

Abstract: An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the main valve interrupts the primary flow of liquid through the passageway and closure of the bleed valve prevents any further liquid from entering the tank and also prevents the escape of vapors from the tank. Operation of the main valve is controlled in significant part by a valve latch assembly which is carried by the housing and a relatch assembly which is carried by the main valve. The relatch assembly ensures operative engagement of the main valve with the valve latch assembly upon movement of the main valve from the intermediate position to the open position. Operation of the main valve and vapor retaining bleed valve is also controlled indirectly by a plurality of floats which are maintained in a float chamber extending adjacent the liquid passageway.

Abstract: An improved skimming apparatus for skimming a two component liquid includes a housing mounted to a tank below the normal liquid level for the tank, an outlet for pumping fluid from the submerged housing and an intake structure extending upwardly from the submerged housing and defining an inlet for permitting inflow of liquid to the interior of the submerged housing. The intake structure includes an intake tube rotatably mounted to the housing at upper and lower ends. The intake tube rotates in response to variations of the liquid level in the housing, to vary the inlet size and hence the rate of inflow to the housing. An adjuster provides control over the variation of the inlet size, to accommodate different skimming rates for liquids of different temperatures. An intermediate tube surrounds the intake tube, and an outer tube surrounds the intermediate tube.