Abstract: A liquid level control system, which may be used with a clarifier in a sewage treatment plant, manages liquid level of an upstream basin by controlling liquid flow in or out of a system that may use a midstream device to equally distribute flow in or out of the basin. This headloss inducing device creates a non-linear relationship between upstream liquid level to be controlled and the lesser downstream liquid level behind the gate or valve. Without the use of electrical controls, the systems of the invention include a gate or valve with counterforces that manage the outflow stream of liquid while accounting for the non-linear head loss created by the midstream device, thus reaching a desired liquid level range for all system flowrates.

Abstract: A fill valve system with a float nested in a container connected to the fill valve and a siphon device passing water out of the container into the toilet tank, with the siphon device having an air vent dimensioned such that: (i) tank refilling is delayed until after the flush valve closes; (ii) the fill valve is not turned on by small leaks in the tank; and (iii) the fill valve turns off when it encounters large leaks in the tank.

Abstract: A siphon valve assembly, the assembly comprising a tubular core; a head coupled to and surrounding a top of the core; and a fluid spray initiator coupled to the head; wherein a lower end of the head defines a siphon valve inlet, a lower end of the tubular core defines a siphon valve outlet, an upper end of the tubular core comprises a weir, and the spray initiator is configured to discharge a fluid into the core to induce a siphon flow of a surrounding fluid through the siphon valve inlet, over the weir, and out the siphon valve outlet.

Abstract: A overflow chamber that can discharge rainwater and soil according to the present disclosure includes: a receiving unit having a receiving space; an interceptor port formed at a side of the receiving unit and selectively opening/closing in accordance with the amount of received object received in the receiving unit; a discharge port formed at another side of the receiving unit; and a first discharge pipe communicating with the discharge port and convexly bending upward at least one time.

Abstract: Systems and methods for creating an oxidation reduction potential (ORP) in water for pathogenic control are described. The systems and methods generate an oxidation reduction potential that provides pathogenic control of the solution as well as pathogenic control of the surfaces with which the solution comes in immediate contact. The system supplies the solution to a vegetable and fruit wash.

Abstract: A portable sink includes a container for holding wash water, an inlet line to bring fresh water into the container, and an outlet line to remove wastewater from the container. A float valve on the inlet line maintains wash water at a selected level within the container. A faucet attached to the float valve may further provide a separate source of clean water to the user. The outlet line further includes a siphon to draw the wastewater from the container to a selected discharge location. The sink may be provided with one or more handles and/or a caster assembly or dolly for ease of movement about the work area. The siphon preferably includes an airlock to prevent the ingress of air at the discharge end under conditions of less than maximum flow.

Abstract: A method for delaying the maximum rate of discharge of water from a stormwater retention basin includes varying the vertical distance of an intake opening from the waterline inversely with water depth. A flow control device for carrying out the method includes an intake pipe with an intake opening that is pivotally mounted to a float body, the pivot being spaced from the intake opening.

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 valveless siphon decanter for processing fluid within a tank having a siphon tube external to the tank, the siphon tube having an output, a boom extending substantially transversely from the siphon tube, the boom providing a path for the communication of fluid from within the tank into the siphon tube, a vacuum head in association with the boom, the vacuum head having at least one orifice disposable within the tank for receiving the fluid, a vacuum source for creating a vacuum within the siphon tube and the boom to draw the fluid in through the at least one orifice of the vacuum head into the boom and into the siphon tube thereafter, a vacuum break for breaking the vacuum within the boom and the siphon tube; and wherein the siphon tube and the boom are disposed outside of the tank.

Abstract: A self-actuating drainage device for placement on a structure to drain water accumulated on the structure includes a collection funnel having a bottom with a funnel hole extending therethrough, a siphon conduit contiguous with the funnel hole, the siphon conduit having a first end disposed on the structure and an opposite end disposed at a position lower than the first end. The device further includes a valve mechanism which includes a float maintained within the collection funnel. The valve mechanism opens when accumulated water raises the float so that the water collected in the collection funnel is released through the siphon conduit and starts a siphoning action from the first end to the opposite end when the valve mechanism closes.

Abstract: A septic field dosing system is described which utilizes a self starting true siphon to deliver a dose of septic tank effluent into a conventional septic field. The precision siphon unit not only eliminates the need for electrical services to the septic tank, thereby eliminating the need for pumps and solenoid operated valves and switches at the septic tank, but also contains the effluent handling equipment in a small unit. For example, the drawdown of the septic tank is used to entirely control the operation of the dosing siphon. Further, the dimensional configuration of the precision siphon operates within the boundaries of the draw down to deliver a proper size dose to the septic field. While a typical septic tank can hold of the order of a thousand or more gallons, the precision siphon can easily fit into a five gallon bucket.

Abstract: A reservoir is disclosed for a throughfeed for liquid, such as a liquid pump, to be set into operation selectively, from and/or to a body of liquid such as a pond, aquarium or bath. The reservoir includes a container for containing liquid and with an outlet for connecting onto the throughfeed to the body of water. It further includes a refill container which, depending on the level of the liquid in the container, is movable reciprocally between a high position and at least one lower position, and which is connected to an inlet of the reservoir connected to the body of liquid. The refill container includes an overflow along which liquid flows from the refill container into the container in the at least one lower position of the refill container.

Abstract: A constant flow liquid supplier includes a body having a cavity defined to contain liquid. An inlet assembly floats on the liquid surface and selectively opens the inlet of the constant flow liquid supplier. An outlet assembly floats on the liquid surface and has an inverted U-shaped siphon. The siphon has an inlet in the cavity and an outlet out of the body. The outlet is lower than the inlet. According to the principles of operation of a siphon and the structure of the present invention, the liquid in the body will flow out of the outlet of the siphon at a constant rate until the siphon shuts off.

Abstract: A constant flow liquid supplier includes a body having a cavity defined to contain liquid. An inlet assembly floats on the liquid surface and selectively opens the inlet of the constant flow liquid supplier. An outlet assembly floats on the liquid surface and has an inverted U-shaped siphon. The siphon has an inlet in the cavity and an outlet out of the body. The outlet is lower than the inlet. According to the principles of operation of a siphon and the structure of the present invention, the liquid in the body will flow out of the outlet of the siphon at a constant rate until the siphon shuts off.

Abstract: A self-priming siphon has an inverted U-shaped tube filled with a hydrophilic material where one end of the tube is connected to a smaller diameter tube such that when the other end of the tube is immersed in a liquid, capillary action causes the fluid to rise in the tube above the level of the water and thereafter fall through said one tube end causing a suction which primes the siphon.

Abstract: A fill valve control system for toilet storage tanks, for preventing continued flow from a water supply thereto as a result of a flush valve leak or a tank leak, wherein the fill valve is responsive to a water level in a separate reservoir filled by a full level of storage tank water to shut OFF said fill valve, there being a syphon from the reservoir and responsive to flushing water from the storage tank to empty said reservoir to turn ON said fill valve, there being a flood prevention means that refills the reservoir in the event of a system failure, and there being a restart means to empty the reservoir for initiating normal operation of the system.

Abstract: The water control gauge is a cylindrical reservoir for collecting water from rain, sprinklers and other airborne sources. The reservoir has a float measurer to measure the level of water collected in the reservoir. A pulley having a float detects the water level and the turning of the wheel of the pulley operates an electric switch to allow or inhibit the operation of a sprinkler system. A siphon is attached to the reservoir to drain the water once a predetermined level has been reached.

Abstract: The low flow irrigation system can be used for batch or continuous time-dependent watering. It takes the form of a reservoir tank with a screen basket which filters out large particles from the water coming into the system. A float valve shuts off and turns on the intake water to preserve a predetermined level of water. Once the tank is filled initially, a siphon is started to begin flow into the standpipe, then into the distributor header. From there water flows through holes into plant water tubes and out to the plant clusters. All of the openings in the system allow for finely suspended matter to flow through so that waste water may be used. This system allows for easy adjustment of flow rates, while solving the water loss problems by limiting the area wet and eliminating the spray. The results are low water and energy usage, along with efficient plant nutrient application with minimal ground water pollution.

Abstract: A level activated syphon system which automatically begins drainage of a liquid such as water from an accumulation area such a swimming pool cover or flat roof when the accumulation of water reaches a preset level is disclosed. The system requires no outside source of energy and consists of a valve assembly at the accumulation area, a hose or pipe which serves as a conduit to the lower drainage area and a water seal at the lower drainage area. The valve is opened and closed by a float which rises and falls with the liquid level at the accumulation area and stops the liquid flow after the accumulation is lowered but does not allow air to enter the conduit. The liquid remains in the conduit to start the syphon cycle again when more liquid accumulates. The water seal prevents the liquid from draining from the conduit when the syphon action is stopped.

Abstract: An automatic prime and flush siphon condensate pump system (100) is provided for displacing condensate water accumulated from an air conditioning evaporator to a drain, such as the drain of a basin (50). Initially, the pump assembly (2) displaces the condensate from the reservoir (1) responsive to the closure of a switch (34) when the condensate level exceeds a predetermined height within reservoir (1). The pump outlet (128) is coupled to the inlet of a pilot operated check valve assembly (3) which is opened responsive to the pressure in the valve chamber (28) exceeding the bias force of the compression spring (33) and a fluid pressure in a reference chamber (29). The pumped condensate exits the pilot operated check valve assembly (3) and is fluidly coupled to the ball-type check valve housing (126) for delivery of the condensate to the passage (18) for fluid coupling with the drain conduit (52).

Abstract: A liquid dosing apparatus comprises a tank (8) to be repeatedly filled with liquid to an upper level; a float (24) adapted to rise in the tank concurrently with the filling thereof and, each time the upper level has been reached, to be wholly or partly filled with liquid so as to sink in the tank, thus actuating a draining siphon (15) which drains the tank to a lower level; and a float siphon (27) draining the float (24) so that this will float again when the liquid level rises after the tank has been drained. The actuating of the draining siphon (15) by the float (24) is achieved by the provision of a chamber (13) which communicates with the tank (8) so as to be filled with liquid when the tank (8) is being filled, an inlet (20) of the draining siphon (15) being connected to the chamber (13). The sinking movement of the float (24) reduces the amount of liquid in the chamber (13), the liquid being pressed into the inlet (20) of the draining siphon for actuating the latter.

Abstract: Water is supplied from a preselected depth in a body of water by an intake held at the preselected depth by a stem connected to a float which rides near the surface of the water. The stem is weighted to maintain a desired orientation of the device in the body of water. A guide is provided in the body of water to maintain the horizontal position of the intake means.

Abstract: A float controlled siphon discharge valve mechanism operates to drain water from a swimming pool cover, and includes a lever arm attached at one end to a hinge and having a float on the other end so that the lever is of the second or third type. A closure control is also included to sense for the presence of water immediately adjacent to the drain opening, and includes a spring loaded control arm connected to the lever arm to force the lever arm into a drain occluding position even if the float does not move that lever arm into such a position in order to ensure that the siphon is not broken even in the event that the float operation malfunctions.

Abstract: A conveyor belt dewatering system in which a siphon tube or pipe is vertically moveable on a tubular support whereby selectively its inlet is lowered into a conveyor belt. Counterweights counter the weight of the siphon tube, these weights being positioned in the tubular support. A source of service water is turned on by a float switch sensing water is the conveyor belt, the service water being used to submerge the weights and lessen their effect and at the same time be supplied to the siphon tube to increase its weight, whereby a siphon tube is lowered into the conveyor belt and siphoning from it commenced.

Abstract: A swimming pool siphon for draining above the ground swimming pools. The siphon is comprised of a generally U-shaped tubular construction having two legs connected by a top bight portion restable upon a top edge of the side wall of the swimming pool. The leg ends are supportable upon the ground and the pool floor and have removable closure caps while a fill cap is provided upon the bight portion. A pool leg may also be provided with a flattened end to drain water closely to the pool floor. After filling the fill cap is closed and siphoning commences upon the removal of the closure caps. The drain leg may be bent or rotated for use with in ground swimming pools and leg extensions may be added as needed.

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: Apparatus for siphoning liquid such as water which accumulates in a ponding area (16) located on a flat roof (12) to a drain (14) is disclosed. The apparatus includes a first liquid conduit (21) which has one end (58) in the accumulated water and a second end (52) in drain (14). A reservoir (26) (64) accumulates a selected volume of water which is transferred from the reservoir (26) (64) by a second liquid conduit (38) to the first liquid conduit (21) such that the first liquid conduit (21) is completely filled with water suitable for initiating siphoning action of the water in ponding area (16) to drain (14). A means for controlling the flow of liquid from reservoir (26) (64) to first conduit (21) such as float valve (36) is included such that there is no transfer of liquid from reservoir 26 to first liquid conduit 21 until the selected volume of water has accumulated.

Abstract: A normally-open two stage float valve for use with a suction tube leading om a vehicle fuel tank. As the fuel tank begins to run dry it is desired that the float valve close off the tank to the suction force. The valve of this invention includes a float-operated pilot valve element that equalizes forces on the opposite faces of the main valve element as the float moves through its actuation stroke. A lifting head is associated with the pilot valve element for mechanically lifting or lowering the main valve element relative to the main seat when the forces have been equalized.

Abstract: A float controlled valve syphons water out of a swimming pool cover. The syphon valve includes co-operable male and female valve members disposed for mutually relative movement to bring them into and out of mutual engagement to thereby close and open flow communication through a syphon discharge passage formed in the male member. A float body is coupled to one of the said members for effecting the engagement and disengagement in response to the level of the water in the swimming pool cover. The male valve member is tapered at the forward end to facilitate engagement with a central recess in the female member. The female member is formed of more yielding material than the male member and has a thin walled portion receiving the male member and of sufficient flexibility to envelop dirt particles at the male-female member seal.

Abstract: A siphon system in which an enclosed container has a chamber for heating a gaseous fluid as by solar radiation. The chamber is in continuous open communication with a siphon having an inlet at an upper level and an outlet at a lower level. A pressure responsive valve is located at the outlet for permitting the release of gaseous fluid at pressures over atmosphere and closing the outlet to communicate pressures below atmosphere to the inlet to start the siphon. When the siphon is filled, the pressure responsive valve opens to release the liquid from the outlet. A float valve may be used at the inlet to retain a below atmospheric pressure in the system for immediate operation when the liquid accumulates at the inlet.

Abstract: A parenteral fluid administration set characterized by a floating siphon operating within a deformable-reformable, plastic-walled, generally cylindrical flow regulator having a normally open-ended overflow tube extending uprightly therein from its bottom end-wall, being thus generally similar both structurally and to a degree functionally to the fluid administration set disclosed in my copending application Ser. No. 608,576 filed Aug. 28, 1975, (now U.S. Pat. No. 3,949,745 dated Apr. 13, 1976) but featuring means whereby the siphon may be primed to initiate fluid flow in controlled amount through the longer leg of the siphon more simply end effectively than by the siphon priming means according to my aforesaid prior-filed application.

Abstract: A parenteral fluid administration set comprising a container having therein a supply of a fluid to be administered intravenously and being characterized by a floating siphon operative to flow fluid from said container supply thereof at a predetermined rate of flow, said floating siphon comprising a float and at least one siphon U-tube whose shorter leg extends through and is affixed to the float and whose longer leg terminates below the inlet end of said shorter leg and a substantial distance above the container bottom, said longer leg opening to and flowing fluid into an axially non-rigid fluid-flow tube extending through the body of the fluid in said container and delivering same through the container bottom to an I.V.

Abstract: A parenteral fluid administration set comprising a plastic bag adapted to be supplied with a predetermined quantity of the parenteral fluid, said bag being foldable over on itself about a transverse fold-over line, a floating siphon enclosed within the plastic bag adapted to follow the level of the parenteral fluid supplied thereto, said floating siphon being adapted to be forced relatively downwardly to substantially its lowermost position in the plastic bag responsive to folding over of the upper portion of said bag on its lower end portion about said fold-over line, thereby immersing the float of the floating siphon in fluid contained in its lower end, as effects conditioning of the floating siphon for operation, the outlet leg of the siphon terminating in a fluid outlet end, said floating siphon being rendered operative to dispense fluid from the plastic bag through said siphon outlet end upon the plastic bag being unfolded and suspended from its upper end.

Abstract: A device for administering parenteral fluids intravenously at a uniform rate achieved by a floating siphon-type flow regulating means.