Abstract: A water outlet box of a pressure-type flushing system and a toilet using the water outlet box, including a water outlet box main body and a first one-way valve assembly. The water outlet box main body is formed with a water-passing cavity, a water inlet, at least one water outlet and a vent, with the water inlet, the water outlet and the vent all connecting with the water-passing cavity. The first one-way valve assembly is provided opposite to the water inlet to open or block the water inlet, and when the pressure-type flushing system finishes flushing, the first one-way valve assembly blocks the water inlet. The vent is provided at the top of the water-passing cavity and is open to the atmosphere. The water outlet box main body is provided with several water inlet pipes in communication with the functional devices of the pressure-type flushing system.

Abstract: The present invention relates to a BOV valve using differential pressure of air and, more particularly, to a BOV valve that is operated using differential pressure of air.

Abstract: The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes a low flow vent configured with a pressure equalizing configuration allowing for reduced extrusion forces along the low flow vent, allowing vertical movement of a float shaft at high valve gas pressures with reduced forces.

Abstract: A backflow prevention device including a tank having a holding chamber and first and second inlets connected with the holding chamber; a control valve having an intake chamber and first and second discharge chambers connected with the first and second inlets, respectively, the intake chamber connected with the first discharge chamber through a valve inlet; a valve sealing element for opening and closing the valve inlet, the second discharge chamber connected with the intake chamber through a hole of the valve sealing element; a float in the holding chamber; a slide bar in the holding chamber, contacting the float, and moveable toward the second inlet under the action of the float; and a slide bar sealing element for controlling opening and closing of the second inlet. When the second inlet is closed, the valve inlet is closed; and when the second inlet is open, the valve inlet is opened.

Abstract: A product may include a canister and a diaphragm may separate a control chamber within the canister. A piston may be movable in the canister between a first position and a second position in response to a pressure change in the control chamber. The piston may have a body and a skirt may extend from the body. The skirt may taper inward relative to the body as the skirt extends away from the body.

Abstract: The present system identifies leaks in irrigation systems by monitoring the overall flow at an irrigation system valve. The system may monitor typical flow rates and may send a signal to shut off an irrigation system valve if an unexpected or excessive flow rate is detected. The present technology can be used in traditional sprinklers, drip irrigation systems, and other irrigation systems.

Abstract: A valve device of a direct watering type drinking water dispenser comprises a body unit formed with a water inlet through which the water purified by a filter is introduced, a water outlet through which the purified water is discharged, and a flow path enabling the water inlet to be in communication with the water outlet; a closing unit provided at the inside of the body unit to open or close the flow path; a lever provided inside the body unit and having one end inserted into the inside of the body unit while being rotatably hinged to the body unit; and a magnet provided at the inside of the body unit which opens the flow path by having the closing unit move upwards and be attached thereto by magnetic force when moved downward by a predetermined depth due to being pushed by the rotation of the lever.

Abstract: A balance beam electro-pneumatic converter (100, 400) adapted to couple to a conduit with a fluid is provided. The balance beam electro-pneumatic converter (100, 400) includes a nozzle (184) adapted to fluidly couple to the conduit, and a flapper (130) rotatably coupled to the nozzle (184) via a pivot (140) wherein the flapper (130) is adapted to regulate a pressure of the fluid and balance about the pivot (140).

Abstract: A leak-proof water valve includes a water inner tube, an outer tube group and a buoyant housing. When the sealing plug of the toilet tank is leaking, leak-proof structure of a buoyant housing for automatically detection is provided to stop the water inlet valve supplying water, so that a user could be aware of the leaking situation to thereby avoid the waste of water resources.

Abstract: A composite material includes a plurality of fibers embedded in a metal matrix. The composite material further includes a plurality of particles disposed in the metal matrix. At least 25% of the fibers contact or are spaced less than 0.2 micrometers from an adjacent fiber within the metal matrix.

Abstract: A composite material includes a plurality of fibers embedded in a metal matrix. The composite material further includes a plurality of particles disposed in the metal matrix. At least 25% of the fibers contact or are spaced less than 0.2 micrometers from an adjacent fiber within the metal matrix.

Abstract: A needle fill valve, in which a bearer is set on the top of a body, the bearer is covered on an upper cover, a front cavity is set on the front side of the bearer, an inner cavity is set on the location corresponding to the front cavity for placing the annular gasket of the sealing plate wrapped a sealing valve pad, and the purpose of fixing the sealing valve pad for preventing being disengaged from the annular gasket is achieved by fastening an upper fixed seat and a lower fixed seat.

Abstract: An implantable device controls the movement of fluid to an inflatable portion of a gastric band. The implantable device includes a body. The body has an inlet, an outlet and a valve seat positioned between the inlet and the outlet. The body defines a fluid passage from the inlet to the outlet. The implantable device also includes a diaphragm. The diaphragm has one or more edges coupled to the body. The diaphragm is made of an elastomeric material and capable of being moved between a closed position that blocks the valve seat and does not allow the fluid to move from the inlet to the outlet and an open position that does not block the valve seat and allows the fluid to move from the inlet to the outlet.

Abstract: A control device is provided with a switching valve mechanism and first and second actuators. The switching valve mechanism is provided with a valve element for switching which is located within a casing. The valve element can linearly move between an open position at which first and second pressure change chambers of the casing are communicated with each other and a closed position at which the communication is interrupted. The valve element is held at the open position and the closed position by a first holding mechanism (toggle spring). When a float ascends to a first water level, the first actuator moves the valve element from the closed position to the open position. When the degree of vacuum within a pressure detection chamber becomes a second degree of vacuum or less, the second actuator moves the valve element from the open position to the closed position.

Abstract: A needle fill valve, in which a bearer is set on the top of a body, the bearer is covered on an upper cover, a front cavity is set on the front side of the bearer, an inner cavity is set on the location corresponding to the front cavity for placing the annular gasket of the sealing plate wrapped a sealing valve pad, and the purpose of fixing the sealing valve pad for preventing being disengaged from the annular gasket is achieved by fastening an upper fixed seat and a lower fixed seat.

Abstract: An apparatus for preventing backflow of a fill valve in a water toilet. The apparatus includes a fill valve for permitting and stopping supply of washing water from a hydrant into a water tank, a fixing section fixing the fill valve to an overflow pipe, a float having a packing for opening or closing an opening/closing hole of the fill valve depending on a level of water contained in the water tank, and a backflow-preventing section disposed inside the fill valve. The backflow-preventing section permits washing water to be supplied from the hydrant into the water tank, and prevents washing water from flowing back toward the hydrant. The backflow-preventing section includes a backflow-preventing member mounted to a supply pipe of the fill valve, and an operation control valve seated on a fitting protrusion of the fill valve to control an operation of the backflow-preventing member.

Abstract: A flush water supply device includes: a water supply valve for switching between a water supplying state and a water stopping state with respect of an inside of the flush water tank; a refill water system on a downstream side of the water supply valve and adapted to allow flush water to be supplied to the flush water tank, and further supplied to a toilet main body as refill water, wherein the refill water system includes a common passage-forming portion which forms a common passage having: an inlet port for allowing inflow of the flush water therethrough; a tank-side outlet port for allowing the flush water to flow out toward the flush water tank therethrough; a main unit-side outlet port for allowing the flush water to flow out toward the toilet main body therethrough; and a vent port; and a vacuum break valve in the common passage-forming portion.

Abstract: An air dryer cartridge is provided for a compressed air supply system, in particular a compressed air supply system of a commercial vehicle, with a drying agent box which is filled with a drying agent. The drying agent box can be coupled in an axial direction to a connecting flange of the compressed air supply system. A seal, which is designed as a non-return valve and, in the fitted state of the air dryer cartridge, acts in a sealing manner between the drying agent box and the connecting flange, is arranged on the drying agent box. A method for operating the air dryer cartridge on the compressed air supply system is also provided.

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 a pressure compensating drip emitter that allows water to trickle into the float housing at a very slow rate.

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: The invention relates to a system for performing parallel chemical experiments. The system comprises an array of parallel flow through reactors each comprising a reaction chamber, a reactor inlet and a reactor outlet connected to the reactor chamber. Downstream of each reactor a corresponding active pressure regulating arrangement is provided for actively regulating the reactor pressure. The pressure regulating arrangement comprises a passage for reactor effluent with an inlet connected to the reactor outlet and an outlet for discharging reactor effluent at a reduced pressure with respect to the reactor pressure.

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

Abstract: A valve for controlling a “guaranteed” back up pressurised liquid supply to a tank fed from another primary supply. The valve controls the quantity of water in the tank between a predetermined upper and lower level. The valve has an inlet and an outlet interconnected by a restricted passage controlled by a diaphragm. The passage is formed by a bore and a reciprocally operative rod is mounted therein. The rod is connected to a support lever which is spring biased to close the valve. The support lever has an operating weight element suspended therefrom by a depending cord. The operating weight has two sections, which have a combined weight providing substantially neutral buoyancy in water. The cord length between the lever and the lower operating weight sections determines the lower water level threshold. The cord length between the two weight sections determines the differential between the lower and upper level.

Abstract: The backflow valve of the present invention includes a valve housing having a cavity therein with an inlet and an outlet to the valve cavity. A switch is in communication with the valve cavity and is moveable from an off position to an on position in response to liquid filling the valve cavity. A valve is moveable in response to the movement of the switch to the on position. The valve moves to a closed position shutting off the fluid flow through the backflow valve.

Abstract: A liquid level controller for maintaining the level of liquid in a tank at a predetermined height includes a housing with an upper and lower section wherein the upper section is connected to a liquid supply and the lower section is submerged in liquid the level of which is to be maintained. The upper section includes a pressure chamber and an outlet chamber divided by a resilient material; a bore extending through the resilient material; and an inlet tube extending from the supply to the bore. A control valve controls the liquid flow through a hole providing communication between the pressure chamber and the lower part of the housing.

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: The present invention relates to a valve assembly for use in below freezing conditions which includes a valve housing with a connection to a supply of fluid, and a primary chamber, and a secondary chamber, and a flexible diaphragm, and an equalisation port, and a safety port the valve assembly characterised in that has a safety port associated with the secondary chamber wherein the safety port is configured to have a lower flow-rate than that through the equalisation port.

Abstract: A liquid level control system including a tank; a source of liquid in communication with the tank; a pressure fluid actuated valve for controlling the flow of liquid to the tank from the source; a pressure sensor disposed in the tank to monitor the hydrostatic pressure determined by the quantity of liquid in the tank. A source of pressure fluid is provided which is normally vented to the atmosphere. A pressure fluid amplifier is coupled to the pressure fluid actuated valve and to the source of pressure fluid. When the pressure sensor sensed an increase of pressure caused by an increase in the liquid level in the tank, the pressure fluid amplifier is effective to actuate the valve to close and militate against flowing into the tank to maintain the liquid at a predetermined level.

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: A ballcock valve with a valve body mounted on a tubular riser with a valve seat which passes water from the riser. The valve body includes a base and a removable cap which enclose valve workings. A screen body passed through the valve seat has a central passage and openings to the passage that exclude particulate solids. A flow control is fitted to the screen body. The combined screen body and flow control is upstream from the valve seat. Preferably a retainer releasably holds the screen body against axial movement when installed.

Abstract: The fill valve incorporates a housing (8) that has a vertical water-carrying channel (24) that leads from an inlet (49) to be fastened on the flush tank bottom (2) to a float-controlled diaphragm valve (50). The diaphragm valve (50) incorporates in a diaphragm (43) a passage for the pressure equalization between a first chamber (51) in front of the diaphragm (43) and a second chamber (52) behind the diaphragm (43). To actuate the diaphragm valve (50) a pilot valve (58) is provided. The diaphragm valve (50) is disposed laterally on the housing (8), thus permitting a low overall height.

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: 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: The fill valve incorporates a housing (8) that has a vertical water-carrying channel (24) that leads from an inlet (49) to be fastened on the flush tank bottom (2) to a float-controlled diaphragm valve (50). The diaphragm valve (50) incorporates in a diaphragm (43) a passage for the pressure equalization between a first chamber (51) in front of the diaphragm (43) and a second chamber (52) behind the diaphragm (43). To actuate the diaphragm valve (50) a pilot valve (58) is provided. The diaphragm valve (50) is disposed laterally on the housing (8), thus permitting a low overall height.

Abstract: A toilet tank valve having valve workings supported on a riser. The riser incorporates a serpentine ladder-like groove pattern engaged by a tooth, such that the height of the valve workings can be adjusted by a ladder-like relative movements of an inner and outer tube.

Abstract: The present invention relates to a valve assembly for use in below freezing conditions which includes a valve housing with a connection to a supply of fluid, and a primary chamber, and a secondary chamber, and a flexible diaphragm, and an equalisation port, and a safety port the valve assembly characterised in that has a safety port associated with the secondary chamber wherein the safety port is configured to have a lower flow-rate than that through the equalisation port.

Abstract: A valve comprising a body having an inlet (13, 113, 213) adapted to be connected to a pressurized source of liquid and an outlet (15, 115, 215) which is to communicate with a reservoir, a valve seat (25, 125, 225) between the inlet and outlet, a valve member (27, 127, 227) movable relative to the valve seat between an open and closed position, the valve member having a first face (29,129, 229) which is movable to be in opposed relation to the valve seat and to be engaged with the valve seat when the valve is in the closed position, the valve member having a second face (31, 131, 231) located in opposed relation to the first face, a chamber (33, 133, 233) located between the body and the second face, a first passageway (35, 135, 235) providing communication between the first face and the chamber, the chamber having a discharge outlet (51, 151, 251), a control means (43, 45, 143, 145, 243, 245) associated with the discharge outlet, the control means being controlled by a bearing member (17, 117, 217) adapted to

Abstract: Fuel shut-off device for use in a diesel fuel tank to discontinue fuel flow to a fuel pump comprises a valve seat forming a fuel flow opening for fuel to flow from the fuel tank to the fuel pump, a fuel control valve cooperably disposed relative to the valve seat to control fuel flow from the fuel tank to the fuel pump, and a spring biasing the fuel inlet valve to a closed position against the valve seat. A diaphragm is provided having a first valve-actuating side for moving the fuel inlet valve relative to the valve seat against bias of the spring and a second side. The second side is communicated to a control chamber having an inlet orifice that is communicated to the fuel tank and an outlet orifice that is communicated to said fuel pump.

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 float assembly for a ball cock assembly for a flush tank of a toilet includes an inner float component which is a buoyant element operatively connected to a shutoff valve atop a standpipe supplying water to the tank. The inner float component is disposed in an outer float component which is in the general form of a container disposed within the flush tank so that its top edge is at a selected water level. In the tank-filling portion of a flush cycle, when the water rises to the selected level, the outer float component suddenly becomes filled with water, causing the inner float element to abruptly rise, shutting off the flow of water into the flush tank. In this manner, the buoyant element is caused to rise at a rate which is greater than a rate at which the water is rising in the tank.

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

Abstract: A liquid flow control valve comprising a casing (10) and a sealing member (22) within the casing, wherein the sealing member divides the casing into a first chamber (24) and a second chamber (26), wherein the sealing member (22) provides for restricted liquid flow (40) from the first (24) to the second chamber (26), the casing the first chamber (24) and a liquid outlet port (20), a valve operating member (32, 30) in the second chamber (26) and operable on the sealing member (22) and co-operable therewith to seal the outlet port (20), wherein the valve operating member (32, 30) is operable by liquid pressure due to liquid which flows into the second chamber (26) from the first chamber (24) via the sealing member's restricted flow passage (40) to initially co-operate with the sealing member (22) to substantially prevent liquid flow from the second chamber (26) through the outlet port (20) via the sealing member (22), and subsequently to co-operate with the sealing member (22) to seal the outlet port (20), where

Abstract: A float assembly for a ball cock assembly for a flush tank of a toilet includes an inner float component which is a buoyant element operatively connected to a shutoff valve atop a standpipe supplying water to the tank. The inner float component is disposed in an outer float component which is in the general form of a container disposed within the flush tank so that its top edge is at a selected water level. In the tank-filling portion of a flush cycle, when the water rises to the selected level, the outer float component suddenly becomes filled with water, causing the inner float element to abruptly rise, shutting off the flow of water into the flush tank. In this manner, the buoyant element is caused to rise at a rate which is greater than a rate at which the water is rising in the tank.

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

Abstract: A 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.