Abstract: An apparatus for automatically maintaining the water level of a body of water, such as a pool, is described herein. The present invention comprises a float body contained within a float housing chamber and selectively coupled to a float valve, a ball check valve employed as a means for isolating the pressurized water in the circulation system of a body of water from the water in the float chamber and, after pump operation has ceased, allowing the passage of supply water from the float chamber of the apparatus of the circulation system of a body of water. Flexible conduits or tubing may be provided for ease of installation. Furthermore, the present invention is intended to be conveniently located near the equipment of the circulation system for the body of water.

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

Abstract: A fill valve assembly for controlling liquid flow into a reservoir includes a mounting adapter defining a liquid inlet passage for connection to a riser for supplying water to the valve and which renders the fill valve readily mountable and demountable for installation and maintenance. A valve body has liquid inlet and outlet openings and a pressure-responsive member is disposed within the valve body and defines a control chamber with which the liquid inlet passage communicates opposite a second side of the pressure responsive member also in communication with the liquid inlet for selectively opening and closing the inlet opening to liquid flow in response to liquid pressure in the control chamber.

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 valve (19) primarily designed as a float valve to control the flow of water under pressure into a cistern has an upstream chamber (22) and a downstream chamber (23). The upstream chamber (22) communicates an inlet (21) for mains water supply with outlets (17, 17A) and the downstream chamber (23) has an outlet (24) which is closed by a valve (25) when a float rises a float rod (14). A primary valve member assembly comprises a piston (3) to the downstream end of which a diaphragm (5) is attached. When the secondary valve (25) is closed pressure on diaphragm (5) causes piston (3) to close the inlet (21). When the secondary valve (25) is opened by the rising float the piston (3) is expelled from the inlet (21) allowing water to flow into the cistern through the upstream chamber (22).

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

Abstract: 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 invention relates to a faucet for filling tanks known as silent and/or fast-closing faucets. The faucet comprises a basic structure and functionalities such as those disclosed in Patent 9400095. The device assembly controlling opening and closing of the faucet has important improvements in comparison with other conventional faucets and in comparison with the above-mentioned patent. The faucet also includes a lever system connecting the float and the piston acting upon the opening and closing device. In additional, improvement deals with the telescopic structure of the fluid outlet tubes to the tank in order to regulate the height thereof depending on the depth of the tank so that the fluid is always discharged into the water with the aim of preventing noises.

Abstract: A toilet fill valve (16) includes a fill tube (21) which is mounted through a hole (14) in a toilet tank wall (12), having isolating means for isolating the fill tube (21) from direct contact with the toilet tank wall (12), as well as isolating water-borne noise and vibration in the fill tube (21) from direct transmission to the wall (12) of the tank (10).

Abstract: A toilet fill valve (16) includes a fill tube (21) which is mounted through a hole (14) in a toilet tank wall (12), having isolating means for isolating the fill tube (21) from direct contact with the toilet tank wall (12), as well as isolating water-borne noise and vibration in the fill tube (21) from direct transmission to the wall (12) of the tank (10).

Abstract: A toilet fill valve includes a housing defining a water fill passage and a water inlet. A valve disposed in the passage divides the housing into a upstream portion and a downstream portion. A pressure regulator vertically oriented in the downstream portion of the housing has a spiral configuration providing a significant pressure drop in the water flow. Noise abatement is enhanced by pressure regulation which reduces the flow velocity, flow directors which inhibit turbulence, and energy drops provided in a downspout.

Abstract: A fill valve for controlling the filling of a fluid reservoir such as a cistern. The valve minimizes the time needed to fill the reservoir by maintaining maximum fluid flow through the valve until instantaneous shut off of the fill valve once the reservoir is filled. The fill valve includes a reciprocating valve head carried on a valve stem connected to a float arm for determining the fluid level within the reservoir. The valve head is disposed within an enclosure having grooves for conducting fluid flow past the valve head to create a back pressure behind the valve head. The valve stem seals a passageway through the valve head which operates as a pilot valve during opening and closing of the valve.

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

Abstract: The present invention relates to a WC-cistern filling valve comprising a liquid inlet assigned to a supply line, a liquid outlet assigned to the cistern, and a closing element which is assigned to a valve passage opening arranged between liquid inlet and oulet and which is switchable by a float in accordance with the liquid level in the cistern for opening and closing the valve passage opening. It is the object of the present invention to provide a low-noise WC-cistern filling valve. This object is achieved in that at least a portion of the liquid outlet is shaped as a thread in the flow direction downstream of the closing element in such a manner that liquid is discharged with a swirl from the liquid outlet to the cistern in the opened state of the closing element.

Abstract: A liquid storage tank overfill prevention assembly that includes an outer housing, an insert that includes fill flow ports, a shut-off sleeve to slowly close off the flow ports and a float member for controlling the sleeve in response to the rise of the stored liquid level. As the product flows through the assembly it is diverted through flow ports in the insert to the inside of the outer body and through the fill pipe installed in the bottom of the valve. As the product level in the tank increases, the float rises and the shut-off sleeve relatively slowly covers or closes the flow ports in the insert. The shut-off is gradual and no hydraulic shock is felt through the valve. For further benefit, the shape of the shut-off sleeve diverts the liquid flow steam through the ports and is shaped to maintain substantial laminar liquid flow until the liquid exits the ports into the housing interior.

Abstract: An automatic shut-off valve assembly for controlling the fill level in liquid storage tanks, sized to fit through existing filler pipes, includes a tubular body having a flow-blocking diverter plate on the lower end, a series of peripheral through-ports disposed upstream of the diverter plate and a concentric sleeve slidably mounted on the valve body and responsive to longitudinal forces transmitted through a pivotable linkage from a cantilevered float. The linkage permits the float to be extended downward along the valve axis for insertion into the tank, then to rotate outward into a cantilevered position. As the float rises in response to the buoyant force of the rising liquid, the sleeve is urged downward by the linkage to sealingly block the ports and limit flow of liquid through the valve. The tank fill level can be selected by adjusting lengths and angles of linkage members or by manipulating the angle and depth of the valve assembly in the tank.

Abstract: There is disclosed a level control valve arrangement preferably for use in a water closet cistern for controlling the liquid level in the cistern or container. The arrangement has a liquid inlet (3) feeding an inlet chamber (1) and a movable valve member (7,10) mounted on a seating (11,12) and movable between an open position in which liquid flows from the inlet into the cistern and a closed position in which liquid is prevented from flowing into the cistern. The movable valve member is biased preferably by a float arm into the closed position in response to liquid in the cistern rising to a predetermined level. The movable valve member (7,10) is mounted in the inlet chamber into which water is fed from the inlet (3) and in the closed position the valve is acted upon by a head of water in the inlet chamber to maintain the movable valve member in the closed position.

Abstract: A fluid-flow controlling apparatus having a fluid-flow stopping state and a fluid-flowing state, wherein the valve body can be held positively at a determined position thereby to prevent any fluid leaks even when the pressure of supplied fluid is increased, said apparatus is characterized by: valve casing connected to the end of a fluid-supplying tube and comprising a valve seat and a slidable valve body; a reciprocating arm which is restricted by means of stoppers in its movement vertical to the flow direction in said valve casing; a connecting plate for connecting said valve body and said reciprocating arm together, said connecting plate being located in a direction parallel to said flow direction in said fluid-flow stopping state; a link mechanism for connecting a float to said reciprocating arm.

Abstract: An hydraulically assisted inlet valve is disclosed having a by-pass passage (32) which is permanently open. Preferably the valve has a valve body (13) reciprocally mounted in the inlet (4) and carried by a diaphragm (23). The by-pass passage preferably extends through the valve body (13) to apply inlet pressure to one side of the diaphragm.

Abstract: A float-operated valve assembly for a water tank includes a valve housing provided inside the water tank and connected to an external water source. The valve housing has an outlet opening formed at an intermediate portion thereof. A ratchet pole extends into the valve housing and has an end portion which is formed with aligned ratchet teeth. The ratchet pole is provided with a stopper that is urged by water from the external water source so as to cut off water flow to the water tank. The float ball of a float ball assembly urges a pivot arm to apply a pushing force on the end portion of the ratchet pole so as to move the stopper and permit water flow to the water tank when water inside the water tank no longer applies a buoyant force on the float ball. A float-controlled pawl engages the ratchet teeth of the ratchet pole when water inside the water tank is below a predetermined level, thereby maintaining the stopper in an open position when the water tank is being refilled.

Abstract: A toilet refill valve is described for refilling a water closet after each flushing, which produces minimal noise during the refill process. The valve includes a valve device which can open to pass water to a vertical outlet tube that empties into the bottom of the water closet. An anti-siphon air tube near the top of the outlet tube has an upper end open to the atmosphere and a lower end facing downwardly along the outlet tube. A restriction in the outlet tube below the air tube, causes water to fill the outlet tube and at least the bottom of the air tube for a water inlet pressure of at least 20 psi. The water at the bottom of the air tube prevents air from being dragged into the downwardly facing air tube, to avoid the noise that would result from such air flowing through the air tube and bubbling out of the bottom of the outlet tube.

Abstract: A liquid level control system for automatically stopping the flow of water in a bathtub. The system includes an adjustable level control mechanism and a flow control device. The control mechanism comprises a float suspended from a flexible chain and slidingly mounted in a vertical chamber hydraulically linked to the bathtub. When the float is buoyantly actuated by the level of the water reaching a predeterminedly set height, the flow control device obturates the inlet of water coming from the water supply conduit.

Abstract: An improved structure for a float valve assembly, utilizing a resisting disc which can be urged against or open the water outlet of the valve to stop or open the water flowing passage by the interrelated movement of a float, a float rod, a moving member, a cap and the resisting disc. The flowing direction of the water in the valve, i.e. the water pressure, can help push the resisting disc in covering up the outlet so the water flow can be stopped more easily and more effectively.

Abstract: A float operated valve is provided with the rise of a float being temporarily prevented by the elastic force of a spring mounted on the valve body. When the buoyant force of the float reaches a predetermined maximum buoyant force as a result of the water level rising and the float becoming increasingly submerged, the buoyant force of the float moves the spring and closes the valve. The valve is also shown with a twin float construction for on/off operation at low and high water levels.

Abstract: A float valve mechanism for a cistern or tank comprising a housing (20,22) defining a closed chamber (24) having an inlet port (26) connected to an inlet pipe (16) to the cistern or tank, an outlet port (28) from the chamber having a valve seat (30) surrounding the port. A valve member (34) passes through the opening and has a valve head located within the chamber, the valve head being integrally formed, preferably from a plastic material, with a lever (38) which is pivotal about axis (42) and carries a float (54). The valve head (36) is pivotally movable an integral manner with the lever along a path passing through the outlet port (28) of the chamber. Water pressure within the chamber normally urges the valve to the closed position and the weight of the float when the water has fallen below a given level in the tank overcomes this pressure to allow water to flow from the chamber into the cistern.

Abstract: A flushing cistern includes a flushing device which is located in a liquid-containing cistern. The device includes a hollow tube and a closure member carried by the tube. The tube can be moved in the cistern between open and closed positions in which the closure member is clear of, and seals the cistern outlet. A float is mounted on the tube to hold the tube in the open position while flushing takes place and which causes the tube to resume its closed position at the end of the flush. The device also includes a float arm carrying a float. The float arm is pivoted to a control arm of the inlet valve to the cistern, and there is a detent on the tube which engages the float arm and pulls it downwardly when the flush is over, so operating the control arm and opening the inlet valve to admit further liquid to the cistern. When the cistern has again filled up, the float arm detaches itself from the detent, and permits the inlet valve to close again.

Abstract: This invention comprises an assembly (10) for controlling the level (64) of fluid, such as water (14), in a container (11), which invention includes a source of supply (29) for discharging the water (14) into the container (11), a valve (21) connected to the water source (29), a float (23) pivotally connected to the valve (21) for holding said valve (23) open or closed, depending upon the level of fluid in the container (11); the assembly (10) comprising a bracket (31) pivotally mounted within the container (11) and fastened to the valve (21) and float (23) as a unit, and a shaft (57) and screw (49) combination seated in a wall (33) of the container (11), with one end of the screw (49) non-rotatably mounted in the bracket (31), the shaft (57) manually rotatable from external the container (11) which rotation results in longitudinal movement of the screw (49) relative to the shaft (57), thereby pivoting the bracket (31) upwardly or downwardly in the container (11), resulting in varying very slightly--or more a

Abstract: Hose connector adapter apparatus for an evaporative cooler float valve includes an integral ferrule for sealing the float valve to the adapter and an internal hexagonally configured passageway through which the water flows and which passageway receives a hex wrench or the like for securing the adapter to the float valve when there is insufficient external clearance for manually securing the adapter to the float valve. The adapter apparatus is able to be secured to evaporative cooler float in virtually any location on a cooler housing, regardless of the cooler housing configuration either by manually securing the adapter or by using a wrench internally.

Abstract: A float controlled valve comprises a chamber with aligned openings, a detachable cap carrying a sealing washer on one opening and a tube arranged to move under the action of the float in the second opening with a seal ring sealing it. The sealing ring is located in position by means of a detachable holding element accessible when the cap is off. Thus the sealing washer and the sealing ring may be replaced after the removal of the cap.

Abstract: An auxiliary float chamber is provided for use in a cistern. A float operating in the chamber controls a valve allowing water into the cistern. In the floor of the chamber there is a syphonic tube. The chamber is held to the cistern wall by means of the valve which is of the type comprising a sliding tube sealing against a washer in a sealing cap so that the seal is not against the pressure of the inlet water. The auxiliary float chamber is mounted below the normal level of liquid in the cistern. As the cistern is discharged, the valve remains closed until water has drained from the auxiliary chamber. Water flowing into the cistern is thus not short-circuited through the discharge.

Abstract: A horizontal water inlet tube is inwardly connected reversely through a valve within a horizontal valve housing and from the valve housing downwardly into a generally vertical water outlet tube. The valve is controlled by a valve control arm projecting generally horizontally from the valve housing downwardly connected through a float connector to a float vertically slideable on a float guide extending downwardly from the valve housing. A diverter at the upper end of the water outlet tube receives water flow generally horizontally from the valve housing into a pair of spaced, downward helical grooves directing the flow spirally into a pair of spaced vertical grooves for ultimate discharge downwardly through the water outlet tube. The diverter vertical grooves are larger in cross-section than the respective helical grooves and are formed by radial plates converging centrally to a cylinder at groove upper portions and an inverted cone at groove lower portions, each vertical groove occupying in the order of 120.

Abstract: A magnetically-operated valve has a body provided with a passageway therethrough. A piston is mounted on the body for sliding movement toward and away from a valve seat. The piston has a magnetic pole at one end. A magnet is mounted on the body for movement between a first position, at which the piston will be held in a flow-permitting position, and a second position, at which the piston will sealingly engage the seat to terminate such flow. An override mechanism may be operated to displace the piston against the repulsive forces between like poles.

Abstract: A valve, of compact design, permits the opening and blocking of a liquid flow whose level is directly proportional to the operation of the valve, with the use of conventional floats being completely abandoned, and with the hydraulic mechanism of said valve being activated in different manners, according to the origin of the source of flow, which can be produced either through the upper part of the tank or from the bottom. There are three embodiments of the valve.

Abstract: A horizontal water inlet tube is inwardly connected reversely through a valve within a horizontal valve housing and from the valve housing downwardly into a generally vertical water outlet tube. The valve is controlled by a valve control arm projecting generally horizontally from the valve housing downwardly connected through a float connector to a float vertically slideable on a float guide extending downwardly from the valve housing. A diverter at the upper end of the water outlet tube receives water flow generally horizontally from the valve housing into a pair of spaced, downward helical grooves directing the flow spirally into a pair of spaced vertical grooves for ultimate discharge downwardly through the water outlet tube. The diverter vertical grooves are larger in cross-section than the respective helical grooves and are formed by radial plates converging centrally to a cylinder at groove upper portions and an inverted cone at groove lower portions, each vertical groove occupying in the order of 120.

Abstract: For ensuring a quick cut-off of a float controlled valve, there is provided a float having a buoyant body and a receptacle for liquid on the body, a single first tube providing an inlet to and an outlet from the receptacle, and a second tube connected to the first tube at an angle directed towards the interior of the receptacle to permit a portion of the liquid from the valve to flow through the second tube into the receptacle to bias the float downwardly and therefore the valve to its maximum open position, the direction of flow of liquid from the second into the first tube acting to dam any liquid in the receptacle. When the valve approaches its closed position, the flow through the second tube decreases and liquid flows out of the receptacle so removing the bias on the float and allowing the float rapidly to rise and close the valve.

Abstract: A liquid level control valve including a cylinder member formed with a passage between an inlet and an outlet; a piston member slidable within the cylinder member, the piston and cylinder members being movable with respect to each other between a position in which the piston obturates the passage through the cylinder and a position in which the passage is open; a lever arm pivoted about an axis on one of the members and connectable to a float so that it is movable in response to the movement of the float on a body of liquid the level of which is to be controlled; and a linkage pivotally connected between the other member and the lever arm at a position on the lever arm spaced from the first mentioned pivot axis.

Abstract: A valve is provided for controlling fluid flow between the inlet and outlet of a closed valve housing. A stationary insert body in the housing includes a through channel with cross channels extending transversely therefrom. The latter open on the inner side of an expansible U-shaped ring which surrounds the periphery of the insert body and is spaced from the wall of the valve housing. A piston is movable to close the outlet of the through channel so as to increase the pressure in the cross channels and cause expansion of the ring to close off the passage around the insert body between the inlet and outlet.

Abstract: A float controlled valve including a first body having a passage passing through it, the outlet end of the passage defining a valve seat, a co-operating second body having a closure member, the first body and second body being telescopically movable relative to each other while being in sealing contact to define a chamber including the valve seat and the closure member, and an outlet from said chamber, means being provided for moving the second body with closure member axially relative to the first body with valve seat to cause closing of the valve. A stop valve is built into the passage upstream of the valve seat to isolate the valve seat from supply pressure.

Abstract: A valve is provided with a longitudinally adjustable orifice and an actuating assembly which is held in the valve body by a twist-lock action configuration which permits removal of the actuating assembly without tools to obtain access to the orifice for fine adjustment of shut-off position of the valve. Gross adjustments by increments is provided in adjusting the angular relation of the float operating arm with the valve actuating arm.