Abstract: A bioreactor includes a bioreactor container, and a root stand. The container has a base and one or more sidewalls connected to the base, the base and sidewalls together defining an interior bioreactor volume. The root stand is supported by the container within the bioreactor volume, and includes a first support comb and a second support comb, each support comb having a plurality of spaced apart teeth. The teeth of the first support comb extend in length in a first direction and the teeth of the second support comb extend in length in a second direction different from the first direction. The first support comb overlaying the second support comb when the root stand is supported in the container, and the first support comb being separable from the second support comb when the root stand is removed from the container. A gravity well and atmosphere control container are also disclosed.

Abstract: A float valve for a chemical reactor has a central pipe which glides around a liquid transfer pipe when a liquid level rises and falls, thereby opening for fluid transfer through liquid transfer apertures in the transfer pipe when the liquid level is rising and shutting off for fluid transfer when the float lowers and seals against a sealing ring placed on the transfer pipe below the liquid transfer apertures.

Abstract: A twin lubrication oil tank filling system with a single oil fill port that prevents overfilling of both a primary oil tank and a secondary oil with a gravity fill system by directing oil primarily into the secondary oil tank by means of a special oil diverter, a float valve for the secondary oil tank that closes when the oil level in the secondary tank reaches a full level to cause additional oil flow to pour into the primary oil tank and a float valve for the primary oil tank that closes when the oil level in the primary tank reaches a full level.

Abstract: A toilet cistern inlet valve, said inlet valve including an inlet stem connected to a water supply, a canister surrounding said inlet stem, a float canister freely supported on said canister, an annular float adjustably positioned on said float canister, an upper valve body, a pilot diaphragm valve, and a diaphragm filling valve within the upper body whereby during the emptying of the cistern the float canister lowers and contacts an actuator button to contact the pilot diaphragm valve to open the diaphragm filling valve to refill the toilet cistern.

Abstract: A toilet fill valve having a mechanism for preventing leakage from a tank of the toilet between flush cycles. The mechanism includes links that are normally locked to prevent the fill valve from opening. The links are operatively connected to a handle of the toilet such that the links are unlocked and allow the fill valve to open only when the handle of the toilet is purposely operated to initiate a flush cycle. Otherwise, the links do not allow the fill valve to open even if water leaks from the tank and causes a float of the fill valve to be lowered.

Abstract: A refrigerant floating expansion apparatus including a main body, a standpipe, a float element and a separation element is provided. The main body includes a base plate and a pipe-shaped housing. The standpipe fixed on the base plate has a second pipe opening and a third pipe opening. The pipe wall of the standpipe has at least an opening near the second pipe opening. The float element surrounds the standpipe for controlling a fluid-passing area of the opening. The separation element surrounding the float element is disposed on the base plate and forms an inner path with the pipe-shaped housing. The separation element has several fluid passageways near the base plate. A high-pressure fluid entering the main body is guided to pass through the fluid passageways to move the float element for controlling the fluid-passing area of the opening. Then, the high-pressure fluid is transferred to a low-pressure fluid.

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 fill valve assembly for a water tank such as a toilet tank. The fill valve assembly includes a head portion containing a valve mounted on top of a vertical water outlet tube and a float which moves vertically along the outlet tube to control the opening and closing of the valve. The float is vertically adjustable without removal or disassembly of the valve assembly in order to adjust the tank water level to a preselected position. The float includes an inverted cup-shaped structure which moves vertically along the outlet tube in response to any change in the water level. The valve contains a flexible main valve disk held in a closed position against a valve seat by water pressure in a control chamber to prevent the flow of water into the tank, and is moved to an open position upon venting of the control chamber. A pilot valve controls the pressure in the control chamber and, therefore, the movement of the main valve disk.

Abstract: A water filler includes a water filling device, and a regulating device. The water filling device includes an inner filling tube, an outer filling tube, and an upper cover. The regulating device includes a floating barrel, a sliding barrel, a water support disk, and an adjusting unit. Thus, the floating barrel is lifted instantaneously and rapidly to stop the water filling action exactly and actually, thereby saving the water source. Thus, the water filler has a quick water stop function.

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 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 ball cock assembly includes a water supply riser with a valve for controlling water flow into a toilet tank. The valve includes an arm extending therefrom for opening and closing the valve. A float container is provided and disposed adjacent to the riser for movement therealong and a float is disposed in the float container for rising within the float container upon water flow into the float container. An actuator is disposed in an operative relationship with the float, float container and valve arm for operating the valve. The actuator includes an outer member attached to the float for moving the valve arm and an inner member for adjusting a level of the float container along the riser independent of movement of the valve arm by the outer member.

Abstract: A flush valve assembly includes a resilient pinch tube disposed in a conduit between a pressurized water source and a toilet flush tank and is pinched closed by a piston disposed in a cylinder formed in a bracket mounted on the conduit. The piston is engageable by a float which moves it between closed and open positions with changes in water level. A tube connects the source to the cylinder. When the float moves to the closing position it closes a drain port in the cylinder so that water pressure in the cylinder assists the piston. A manually adjustable screw on the float cammingly engages a bead on the conduit to yieldably arrest upward float movement and provide snap-action shutoff of the valve.

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 fill valve assembly for a toilet tank including a vertical standpipe, a pilot valve assembly located at the top end of the standpipe, and a vertically movable float which is connected to the pilot valve assembly. The pilot valve assembly opens the valve assembly when the float moves vertically downward and closes the valve assembly when the float moves vertically upward.

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: An adjustable height fill valve for controlling the water level in a storage tank for a toilet includes a riser mounted in the tank and connected to a pressurized water supply. The riser includes an anti-siphon body telescopically mounted over a fixed shank. The anti-siphon body telescopically adjusts between retracted and extended positions. A pilot valve is mounted on the anti-siphon body in fluid communication with the water supply. A float is mounted in association with the pilot valve to selectively open or close the pilot valve depending on the water level in the tank. A latch on the anti-siphon body and a series of stops on the shank are releasably engageable to adjustably fix the position of the body on the shank between the retracted and extended positions. The stops comprise first and second sets of axially spaced and interleaved fingers which define a serpentine track into which the latch extends.

Abstract: An improved automatic fill valve assembly that is readily securable in a level position for installation and that has inlets adapted to accept either a toilet tank fill valve or a float type valve inside of the housing of the fill valve assembly. One improvement comprises a flange that defines at least one anchor point so that the entire assembly can be secured in place to an adjacent structure during installation. This arrangement advantageously holds the automatic fill valve assembly in a level position while workers pour cement around it. Another improvement comprises the provision of inlets that can be connected to a water source and are adapted to mount either a float valve assembly or a toilet tank fill valve inside of the fill valve assembly.

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: An above-ground tank auto-limiter is provided for preventing the overflow of fluid in storage tanks. The auto-limiter includes a valve assembly insertible downward through the top of a fill pipe of the fuel storage tank. The valve assembly has a cylindrical valve housing providing a fluid flow 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 lower portion of the valve housing with the fluctuation of the fuel level within the tank. A series of linkage assemblies communicate the cylindrical float to valve doors. The valve doors prevent any fluid flow from passing through the fluid flow passageway when the doors are in the closed position.

Abstract: Leak detector apparatus (40) is provided for use with a toilet inlet valve assembly (12) that includes a float (30) slidable along a vertical post (32), which can be easily installed by a handyman. The leak detector apparatus includes a buoyant body (42) and a mount (44) that pivotally supports the body about a body axis (54) on the float (30). The body has a forward end portion (56) that can engage the post to prevent the float from moving down until a chain device (60) attached to the rear of the body is pulled to pivot the body. The body has a center of buoyancy (80), when immersed in water, which lies forward of the body axis, so when immersed the body urges its forward end portion against the post to prevent the float from moving down. The forward portion of the body can include a metal strip with a sharp edge (74) that "digs" into the inlet valve plastic post. The mount includes a pair of upstanding mount posts (114) that project into air holes (112) on the float.

Abstract: An above-ground tank auto-limiter is provided for preventing the overflow of fluid in storage tanks. The auto-limiter includes a valve assembly insertible downward through the top of a fill pipe of the fuel storage tank. The valve assembly has a cylindrical valve housing providing a fluid flow 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 lower portion of the valve housing with the fluctuation of the fuel level within the tank. A series of linkage assemblies communicate the cylindrical float to valve doors. The valve doors prevent any fluid flow from passing through the fluid flow passageway when the doors are in the closed position.

Abstract: The present invention relates to a fluid reservoir, chiefly a reservoir whose purpose is to constitute a buffer, wherein the liquid level varies substantially comprising an inlet conduit (1) for liquid, an outlet conduit (2) for liquid, reservoir walls (3), a reservoir bottom (4) and a liquid outflow arrangement (5) located inside the said reservoir, which is connected to the said inlet conduit (2), the said outflow arrangement (5) comprising means (6) to ensure that its opening (7) follows the surface of the liquid (8) in the said reservoir (3, 4), the opening (7) preferably being located so that it discharges on a level with or immediately below the said liquid surface, which significantly reduces the risk that gas is included in the liquid flowing out via the outlet conduit.

Abstract: The present invention discloses a valve which utilises an imbalance of flow induced pressure forces to keep the valve open or closed. The valve has an interior cavity (15) into which an opposite and aligned inlet (12) and outlet (13) open. A bulbous body (16) is located within the cavity and is reciprocally mounted on a spindle (17) which passes through the outlet. Movement of the body increases the flow area at one end of the body and decreases the flow area at the other end of the body. In accordance with Bernoulli's theory this changes the pressures acting on the body (16) giving rise to a net force on the body. A cistern inlet valve (111,211) and cistern (19) are also disclosed.

Abstract: An attachment for float operated valves in a water closet of commode is set forth. In the water closet, the rising water on filling moves a floating bulb or ring which is connected with an arm. The adapter of this invention includes a mounting ring for attachment, a mounting post supported by the ring, and a rotatable hanging pendulum which supports a locking shoulder wherein the shoulder hooks the arm moved by the float. That prevents leakage after the water closet has been filled. On flushing, a chain connects to the flush mechanism so that the hanging pendulum and locking shoulder are pulled from the arm to permit float operation.

Abstract: A valve to monitor the level of fluid in an above ground storage tank while the tank is being filled, cutoff the flow of fluid when the tank is in a full condition, and as long as the filling pressure is on the valve the valve will remain cutoff even if the fluid level in the tank has lowered. A relief valve to drain the fluid remaining in the filling hose after the filling pressure is off. A sight level indicator to visually show that the tank is in a filled condition. A monitoring node to be used with or without the mechanical cutoff valve in a totally controlled application where the filling person is not responsible for shutting off the filling tank truck, with two switches, one to alert that the tank is near a filled condition and the second to alert that the tank is in a filled condition.

Abstract: A valve to monitor the level of fluid in an above ground storage tank while the tank is being filled, cutoff the flow of fluid when the tank is in a full condition, and as long as the filling pressure is on the valve the valve will remain cutoff even if the fluid level in the tank has lowered. A relief valve to drain the fluid remaining in the filling hose after the filling pressure is off. A sight level indicator to visually show that the tank is in a filled condition. A monitoring node to be used with or without the mechanical cutoff valve in a totally controlled application where the filling person is not responsible for shutting off the filling tank truck, with two switches, one to alert that the tank is near a filled condition and the second to alert that the tank is in a filled condition.

Abstract: A compact, self-contained, automatic flow control and venting apparatus for the automatic interruption of liquid flowing into a liquid storage receptacle during the refilling process is disclosed wherein a dual-chambered, offset valve mechanism is controlled by the movement of a float assembly. A bi-directional lever member linked to the float assembly is used to control the movement of the valve mechanism between its open and closed positions. The apparatus also provides for the automatic release of air or vapor from within the receptacle during the refilling process and for the automatic checking of liquid backflow through the valve mechanism.

Abstract: A toilet tank ball cock is designed for use in a toilet tank having an operating lever, a flush valve controlled by the operating lever and a water supply, with the ball cock regulating the supply of water to the tank. The ball cock includes a vertical riser column communicating with the water supply and a water control valve regulating the flow of water from the water supply to the toilet tank. There is a float movable on the riser column and coupled to the water control valve such that downward movement of the float to a selected level opens the water control valve to fill the toilet tank and upward movement of the float to a selected upper level closes the water control valve to stop filling the tank. The float has openings therein in communication with the tank interior. The openings are located to provide for water flow from the float as the water level in the tank drops.

Abstract: A suction drainage control system that reduces an operator's exposure to infectious waste by permitting waste-treating material to be dispersed into a sealed chamber in which the infectious waste is contained. The sealed chamber includes a cover with a flexible liner sealed to and suspended therefrom. A reservoir having a closure is provided inside the sealed chamber for storing the waste-treating material, which reservoir is opened by manipulating the flexible liner to remove the closure.

Abstract: A suction drainage control system that reduces an operator's exposure to infectious waste by permitting waste-treating material to be dispersed into a sealed chamber in which the infectious waste is contained. The sealed chamber includes a cover with a flexible liner sealed to and suspended therefrom. A freely movable reservoir is provided inside the sealed chamber for storing the waste-treating material, which reservoir is opened by manipulating the flexible liner to open the reservoir.

Abstract: A toilet tank ballcock which includes an adjustable detent arm pivotally mounted above the ballcock float to swing into a latching position below the float and thereby prevent the float from lowering except pursuant to an intentional flush of the tank. The ballcock also has a fully and conveniently adjustable riser column and float linkage rod to allow for easy control of the volume of water delivered by each flush.

Abstract: A tank valve for maintaining a water lever storage level in a tank. The tank valve includes differential pressure valve workings under control of a pivot member. A float enables the valve to open when resting on the pivot member and opens the valve when it rises free of the pivot member. A boost link depends from the pivot member to be boosted by the float near the end of its upward travel to assure closure of the valve working when an intended water level has be attained.

Abstract: A two stage float actuated shutoff valve for preventing overfilling of an underground storage tank has a first float actuated valve flapper movable to a closed position to block a major portion of the fuel inlet passage of the underground tank when the level of fuel in the tank rises to a first predetermined level. Closure of the first valve blocks a first portion of the flow passage while maintaining a second portion of the flow passage open to permit a reduced flow of fuel through the flow passage, thereby generating an observable water hammer effect signalling that the filling operation should be terminated. If the incoming flow is not terminated, the continued rise of the level of fuel in the tank will in time actuate a second float controlled valve to completely close the fuel inlet passage. The incoming fuel is supplied from a delivery truck tank, fuel flowing gravitationally from the truck tank through an operable shutoff valve on the tank, a delivery hose and a drop tube into the underground tank.

Abstract: A two stage float actuated shutoff valve for use in underground fuel storage tanks having a co-axial vapor recovery system utilizes a drop tube co-axially mounted within the storage tank fill pipe. Fuel flowing into the tank is passed through the drop tube which projects downwardly into the interior of the tank to a valve housing located at the lower end of the drop tube. Tubular floats slidably mounted on the drop tube within the tank independently operate pivoted flapper valves to a closed position within the valve housing, a lower float closing one valve flapper to block a major portion of the incoming fuel flow passage when the level of fuel in the storage tank reaches a predetermined first level and a second upper float closing a second flapper to completely close the flow passage when the level of fuel rises to a predetermined level about the first level. A float actuated locking arrangement for preventing inadvertent premature closing of either valve flapper is disclosed.

Abstract: A vapor vent valve for venting air and fuel vapor from vehicle fuel tanks comprises a hollow valve body having radial flow ports formed therein, and an axially slidable shutter movable between a valve open position remote from the radial flow ports and a valve closed position covering the radial flow ports. An axially slidable float mounted on the valve body adjacent the shutter lowers and raises the shutter between the valve open and closed positions in response to changes in the tank fuel level. The axial shutter and float structure is unaffected by the radial outflow of air and fuel vapor through the ports.

Abstract: A fuel supply system comprising a main tank for storing a fuel; a subtank provided in the main tank for storing a part of the fuel; a first communication line for communicating the main tank to the subtank; a first pump provided in the first communication line for supplying the fuel from the main tank through the first communication line to the subtank; a first mechanism provided downstream of the first pump in the first communication line for limiting an amount of the fuel to be supplied from the first pump to the subtank and maintaining a level of the fuel to be stored in the subtank; a second communication line for communicating the subtank to an engine; a second pump provided in the second communication line for supplying the fuel from the subtank through the second communication line to the engine; a fuel return pipe for returning an uncomsumed part of the fuel from the engine to the subtank; and a second mechanism for regulating an amount of the fuel to be supplied from the second pump to the engine acc

Abstract: A toilet tank valve having a vertical riser with a collet thread and a plurality of flexible collet fingers. A slider tube is fitted into the riser. It has a plurality of peripheral grooves that can be engaged by the fingers to adjust the elevation of the slider tube. A collet nut threaded to the riser compresses the finger for this purpose. Valve workings are mounted to the slider tube. They include an inverted cup float slidingly fitted around the riser which can engage splines on the collet nut so that rotating the float can turn the collet nut, enabling the slider tube's elevation to be adjusted and its adjustment retained.

Abstract: A shut off valve assembly for preventing overfilling of an underground fuel storage tank or other storage tanks where the incoming flow is not metered, utilizes a two stage valve closure, the first stage closure signaling the tank is nearly filled to capacity and the second stage closure subsequently completely stopping flow into the tank.

Abstract: A tank valve for refilling a toilet tank and simultaneously supplying water to a toilet bowl has a riser, a valve mounted to the riser, a valving chamber in the body of the valve, and a downwardly directed outlet port from the valving chamber. A cuff surrounds the riser. It has a bottom with an aperture to pass the riser, and a peripheral sidewall extending upwardly from the bottom with an upper edge spaced from the body through which water from the outlet port into the cuff flows into the toilet tank. A fill port through the cuff leads by way of a hose to supply water to refill the toilet tank bowl.

Abstract: A simple and reliable liquid level control for controlling the level of a cryogenic fluid within an enclosure for an electrical component. This totally mechanical system varies the flow rate of the cryogenic fluid from a supply conduit until the full level is attained at which point the flow is completely turned off. Details of materials used and construction considerations made in order to operate in this somewhat unstable environment are presented. The design includes the passages for exhausting the evaporated cryogenic fluid that is boiled off by the heat from the electrical component in the enclosure.

Abstract: An improved flushing means is disclosed for use in water tanks such as are for flushing toilets. The flushing means has a water inlet with an improved two-stage valve using inlet line pressure for operating the two stages. A float is movably mounted on the inlet for controlling the valve with a lever operatively coupling the float to the first stage of the valve. A cooperating vertical hollow and floating overflow tube including an adjustable bowl filling siphon controls the tank discharge to the bowl. These improvements to the tank discharge to the bowl are also to be incorporated into the commonly used flapper-type flush valve.

Abstract: A vehicle fuel level sensor comprising a hollow cylindrical body housing a sliding float, the position of which is determined by the fuel level in the fuel tank. The sensor also comprises a filter surrounding as portion of the side wall of the cylindrical body, close to the bottom wall of the same, so as to define, with the side wall, a first chamber; and a plate for supporting the filter and connected to the bottom wall of the hollow cylindrical body so as to define, with the bottom wall, a second chamber communicating directly with the first chamber and, via a through hole in the bottom wall, with the inside of the hollow cylindrical body.

Abstract: An inverted cup float for a ballcock valve in a water tank. It is inherently able to select the water level in the tank by inherent selection of the point along its height where it becomes buoyant. An example is the provision of a plurality of vent ports at various heights along the cup which can selectively be opened to vent air from the cup at levels below the uppermost vent port.

Abstract: An overflow valve system (10) comprises a tubular housing (12) having a J-shaped pipe fitting (14) mounted therein having an injection nozzle (24) at a first pipe-fitting end (26) located in a housing bore (40) of the tubular housing near the bottom thereof for injecting liquid axially upwardly in the housing bore and having a second pipe fitting-end (30) located outside of the tubulary-shaped housing (12). The injection nozzle has female threads therein for meshing with male threads of a toilet-flush ballcock (18), said threads meeting national standards for threads on ballcock shanks and nuts for water-closet bowls, tanks and urinals whereby a standard water-closet ballcock can be sealingly mounted in the overflow valve system by screwing it into the nozzle for controlling the flow of water through the pipe fitting into the bore.

Abstract: A system for maintaining a preselected water level in e.g. a swimming pool comprises a chamber (6) in communication with the pool such that the water level in the chamber corresponds to that of the pool. The chamber contains an adjustable over flow tube (15) and a vertically oriented water supply line (19) having a diaphragm valve (20) and surrounded by an annular float (29), the valve being actuated by a height adjustable overhead actuator bar (23).

Abstract: A flushing system for rapidly delivering a given volume of water supplied to an accumulating chamber (5) from an automatically or manually operated valve (6) has a float-controlled discharge valve (19) which is arranged to be opened when said given volume of water has been delivered to the accumulating chamber (5) and the float is located at a corresponding level in said chamber. A supply pipe (13) extends downwardly in the accumulating chamber (5) towards the outlet (3), and a valve housing (19) is slidably arranged, together with the float, on the water supply pipe. In a closing position of the valve housing, the lower edge part of the valve encircles the outlet. In an opening position of the valve housing, with water in the accumulating chamber, the valve housing is lifted from the seating. The lower end of the supply pipe is formed with a valve body (17) arranged, together with the valve housing, to form a pressure chamber (24) having a leakage opening.

Abstract: A ball cock and float assembly (10) having a shank portion (11) that is adapted to be insertably received through the inlet opening (13) in the bottom wall (14) of a reservoir tank (12). A support means (50) extends upwardly of the shank portion (11). The support means (50) comprises post means (30) that extend fixedly upwardly from the shank portion (11), and extension means (46) that are telescopically slidable along the post means (30). A lock (42) secures the extension means (46) at a selected position along the post means (30) to provide in gross adjustment in the vertical height of the float assembly (110) that is movable along the extension means (46). A valve (55) is carried by the extension means (46) upwardly of the float means (110). An inlet conduit (52) communicates from the shank portion (11) through the post and extension means (30, 46) to the inlet port ( 54) of the valve means (55).

Abstract: A ballcock assembly having an upright standpipe for delivery of flush water, a control valve assembly at the upper end of the standpipe, and a float and ballast assembly slidably mounted for up and down movement relative to the standpipe and connected to the control valve assembly. The control valve assembly operates to open the valve to flow of flush water from the standpipe assembly in response to downward movement of the float and ballast assembly. When the float assembly is caused to rise by incoming flush water from the standpipe, it ultimately causes the control valve to shut off incoming flow of flush water from the standpipe.

Abstract: A safety air gap system for an exemplary high volume evacuator having a water-sealed pump to provide suction thereto and including a gray water discharge from the pump to a drain, the system including a closed housing adapted to be mounted at a higher level than the evacuator, a reservoir for fresh water in the housing terminating a predetermined distance below the top, a coaxial pair of inner and outer tubes extending upward from the bottom of the reservoir and terminating above the top of the reservoir, the lower end of the inner tube receiving municipal water for discharge at the top to the outer tube which discharges the water at the lower end to the reservoir as controlled by a float-operated valve between the upper ends of the tubes, the housing having in one sidewall an outlet port connectable to a drain at a level below the top of the reservoir to prevent accidental filling of the housing with water in the event of a malfunction of the system, and an air gap opening positioned in a sidewall of the hou