Abstract: An early suppression fast response fire protection system includes a sprinkler piping system with at least one sprinkler head assembly, a water supply system, and a check valve in fluid communication with the sprinkler piping system and the water supply system. An antifreeze solution supply system is in fluid communication with the sprinkler piping system, with the check valve isolating the antifreeze solution from the water supply unless a fire condition occurs.

Abstract: A viscous material feed system, comprises a feed tube that receives material expressed from a container; and a container evacuator comprising a chamber to hold a container to express material from the container to the feed tube and a plunger comprising a platen axially and slidably accommodated within the chamber, the platen comprising an O-ring fitted against a platen driving face; a full ring with tabs extending to secure the O-ring to the platen driving face with a circumferential surface exposed to the chamber and a vacuum breaker valve to the chamber that seals the platen face when in contact with container material and retains residual material adhering to the platen face when the valve is activated at a termination of a driving cycle of the platen through a container content.

Abstract: The present invention provides a method and apparatus for bulk fluid distribution. In particular, the invention provides a method and apparatus for distributing fluids in a semiconductor manufacturing plant (e.g. a 300 mm fab). The invention meets the performance and uptime requirements of semiconductor manufacturers including increased capacity and pressure control as compared to known fluid distribution systems, and can satisfy the requirements of “no single point failures” and “no planned downtime.

Abstract: The invention relates to valves for air compressors, and more particularly, to an unloading/venting valve having integrated therewith a high-pressure protection valve where a pressure reducing valve has a discharge port in communication with the air system and a vent. The valve utilizes a valve body biased to form a seal between the discharge port and the vent. A governor monitors the air pressure in the system and generates a signal to move the valve body against the bias and unloads the system when a first predetermined threshold pressure is reached. In the event of a failure of the valve body to move at the first threshold pressure, the valve body is movable against the bias in response to a second predetermined threshold pressure reached in the system, thereby unloading the system.

Abstract: A dual fuel pump fuel extraction system for saddle fuel tanks. A primary modular reservoir assembly (MRA) includes an electric primary fuel pump located in the primary sump of a saddle fuel tank and a secondary MRA including an electric secondary fuel pump located in the secondary sump of the saddle fuel tank, wherein both the primary and secondary fuel pumps extract fuel from the primary sump and simultaneously transfer fuel between the primary and secondary sumps so as to thereby ensure both the primary and secondary fuel pumps have fuel, without starving one before the other, until fuel becomes depleted from the saddle fuel tank.

Abstract: A unitary concrete structure pumping station useful in pumping waste fluids and the like during the passing of such materials from one part of a gravity flow waste system to another. This concrete structure is simple to install and use and many of the problems associated with conventional pumping stations are alleviated. The structure is comprised of several parts that can be made pre-assembled at the factory or assembled in the field prior to installation. By being a unitary structure this pumping station is resistant to movements within the earth and therefore less likely to incur line breaks.

Abstract: In one embodiment, a method is provided for performing a fluid process within a machine having a fluid system including at least two reservoirs of different types of fluids. The method includes the steps of identifying a first reservoir for use in performing a fluid process; (a) adjusting a configuration of a valve system operatively coupled to the fluid system to permit a fluid evacuation process to be performed for the reservoir, (b) subsequently performing the fluid evacuation process for the reservoir, (c) subsequently adjusting the configuration of the valve system to permit a fluid refill process to be performed for the reservoir, (d) subsequently performing the fluid refill process for the reservoir; and, subsequently identifying an additional reservoir and performing at least one of the steps (a), (b), (c) and (d) for the additional reservoir, wherein the first reservoir includes a fluid of a type which is different from a type of a fluid of the additional reservoir.

Abstract: The invention relates to a hydraulic separator to be fitted between a primary liquid circuit and a secondary liquid circuit, in such a manner that the first and secondary liquid circuits are hydraulically independent. The hydraulic separator has an elongate body with an internal space which is delimited by a wall. In the internal space there is a feed port leading to the primary liquid circuit and a discharge port leading from the primary liquid circuit, which are located substantially on one longitudinal side of the hydraulic separator. Also in the internal space there is a feed port leading to the secondary liquid circuit and a discharge port leading from the secondary liquid circuit, which are located substantially on a different longitudinal side of the hydraulic separator. The feed port leading to the primary liquid circuit and the discharge port leading from the secondary liquid circuit are located substantially at a first height region of the hydraulic separator.

Abstract: A sump liner comprising a liner wall joined with a base member, the liner wall extending about the periphery of the base member, the liner wall comprising a primary reservoir portion and a secondary reservoir portion, with a weir extending from the base member and the inside surface of the liner wall. The weir divides the sump liner interior into a primary reservoir and a secondary reservoir, with a primary pump to remove water from the primary reservoir and a secondary pump to remove water from the secondary reservoir. The primary reservoir receives drainage water through an inlet pipe. The secondary reservoir receives drainage water that flows over the weir in the event the primary pump in the primary reservoir fails, in which case the secondary pump in the secondary reservoir pumps out the water. The weir may have an inverted V-shape. A sump liner and with a vented lid bolted to it to form an airtight seal.

Abstract: An apparatus 115 for processing a substrate 20, comprises an integrated pumping system 155 having a high operating efficiency, small size, and low vibrational and noise levels. The apparatus 115 comprises a chamber, such as a load-lock chamber 110, transfer chamber 115, or process chamber 120. An integrated and local pump 165 is abutting or adjacent to one of the chambers 110, 115, 120 for evacuating gas from the chambers. The pump has an inlet 170 connected to a chamber 110, 115, 120, and an outlet 175 that exhausts the gas to atmospheric pressure. Preferably, the pump 165 comprises a pre-vacuum pump or a low vacuum pump.

Abstract: An apparatus for boosting residential water pressure. To attain this, a conduit receives water supplied to a residence and routes the water through and inlet on/off valve and a first check valve to a pump, where said pump provides water to the residence as well as to a throttling conduit back to the input of the pump. In an embodiment, the water is returned to the input of the pump through a relief valve arranged within the throttling conduit. In an embodiment, a pressure switch provides input to a motor controlling the pump. Also, a method to increase water pressure.

Abstract: An apparatus 115 for processing a substrate 20, comprises an integrated pumping system 155 having a high operating efficiency, small size, and low vibrational and noise levels. The apparatus 115 comprises a chamber, such as a load-lock chamber 110, transfer chamber 115, or process chamber 120. An integrated pump 165 is abutting or adjacent to one of the chambers 110, 115, 120 for evacuating gas from the chambers. In operation, the pump is located within the actual envelope or footprint of the apparatus and has an inlet 170 connected to a chamber 110, 115, 120, and an outlet 175 that exhausts the gas to atmospheric pressure. Preferably, the integrated pump 165 comprises a pre-vacuum pump or a low vacuum pump and is housed in a noise reducing enclosure having means for moving the pump between locations and means for stacking pumps vertically in use.

Abstract: A redundant array pumping system and control system is provided for water rides for ensuring continuous and non-disruptive supply of water. The pumping system incorporates a redundant pump and filter array in conjunction with a nozzle system for injecting water onto a ride surface. The nozzle system may incorporate a plurality of redundant or quasi-redundant nozzles. The hydraulic system can include many levels of redundancy as applied to its various components, such as pumps, filters and nozzles. Additionally, the system can be equipped with a plurality of pressure and flow sensors for monitoring and controlling the performance of the pumps, filters and nozzles of the hydraulic system.

Abstract: A primary-secondary pumping system for HVAC systems wherein the common pipe is configured so that there is at least a 4 ft pressure drop across the length of the common pipe and that all thermal plants see the same temperature of water entering the thermal plants and that return water sees the pressure drop of the common pipe before it sees the chilled (or heated) water leaving the thermal plant and the suction of the secondary pumps.

Abstract: A hydraulic pressure generating apparatus includes a hydraulic oil feed line for feeding hydraulic oil with high pressure from an oil tank to a hydraulic pressure control system of a generator by an oil feeding pump unit, a hydraulic oil return line for returning drain oil from the hydraulic pressure control system to the oil tank, and a circulation line for circulating and purifying the hydraulic oil of the oil tank by a circulating pump unit. In such apparatus, the hydraulic oil is flame resistant hydraulic oil which is hardly deteriorated by direct heating, and the flame resistant hydraulic oil is heated by a heater disposed in the oil tank.

Abstract: A redundant array pumping system and control system is provided for water rides for ensuring continuous and non-disruptive supply of water. The pumping system incorporates a redundant pump and filter array in conjunction with a nozzle system for injecting water onto a ride surface. The nozzle system may incorporate a plurality of redundant or quasi-redundant nozzles. The hydraulic system can include many levels of redundancy as applied to its various components, such as pumps, filters and nozzles. Additionally, the system can be equipped with a plurality of pressure and flow sensors for monitoring and controlling the performance of the pumps, filters and nozzles of the hydraulic system.

Abstract: A fluid transfer system includes elongated conduits connected at one end with couplings to a plurality of fluid reservoirs of a machine or engine and at the other end with a control valve for selective quick evacuation. Evacuation is powered by a pump operably connected to the control valve. Another embodiment includes a first pump for the evacuation of an engine oil reservoir and a second pump for the selective evacuation of transmission and hydraulic fluid reservoirs. The control valve and the pumps may be operated remotely through electrical switches on brackets or on a service panel. Associated methods of removing fluids and replacing fluids from a plurality of reservoirs includes coupling the fluid transfer system to the reservoirs.

Abstract: The cryogenic rotary coupling comprises segments of a cryogenic line that are capable of turning relative to each other about a pivot axis of the rotary coupling. Radial retaining elements and axial retaining elements define the pivot axis of the rotary coupling. One of the segments comprises a vacuum-insulated double-walled female portion and the other segment comprises a vacuum-insulated double-walled male portion engaged at least in part in the female portion. A first sealing gasket is interposed between a free end of the male portion engaged in the female portion and one of the retaining means. A second sealing gasket is interposed between a free end of the female portion surrounding the male portion and the other one of the retaining elements. A heater device is disposed in the vicinity of the second gasket.

Abstract: A method and flow system for controlling the flow of a liquid in a flow system, the liquid flow comprising particles and being led into a channel thereof. The method comprises the steps of enveloping the liquid flow by a flow of carrier liquid, hydrodynamically focussing the particles in the liquid flow providing a measurement signal of the liquid flow from an observation area in the channel, and dividing the liquid flow at a branching point into two or more outlets in response to the measurement signal. The division of the liquid comprises introducing a control liquid from at least one control channel at a merging point or merging area in the channel. The amount of control liquid is controlled by at least one electro-kinetic pump, the pump effect of which is controlled in response to the measurement signal.

Abstract: A sump liner comprising a liner wall joined with a base member, the liner wall extending about the periphery of the base member, the liner wall comprising a primary reservoir portion and a secondary reservoir portion, with a weir extending from the base member and the inside surface of the liner wall. The weir divides the sump liner interior into a primary reservoir and a secondary reservoir, with a primary pump to remove water from the primary reservoir and a secondary pump to remove water from the secondary reservoir. The primary reservoir receives drainage water through an inlet pipe. The secondary reservoir receives drainage water that flows over the weir in the event the primary pump in the primary reservoir fails, in which case the secondary pump in the secondary reservoir pumps out the water.

Abstract: An apparatus 115 for processing a substrate 20, comprises an integrated pumping system 155 having a high operating efficiency, small size, and low vibrational and noise levels. The apparatus 115 comprises a chamber, such as a load-lock chamber 110, transfer chamber 115, or process chamber 120. An integrated pump 165 is abutting or adjacent to one of the chambers 110, 115, 120 for evacuating gas from the chambers. In operation, the pump is located within the actual envelope or footprint of the apparatus and has an inlet 170 connected to a chamber 110, 115, 120, and an outlet 175 that exhausts the gas to atmospheric pressure. Preferably, the integrated pump 165 comprises a pre-vacuum pump or a low vacuum pump and is housed in a noise reducing enclosure having means for moving the pump between locations and means for stacking pumps vertically in use.

Abstract: Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constrained to move faster than vanes on the first impeller. Water is subsequently caused to flow through the second passage and to be more aggressively advanced by the second impeller.

Abstract: A fluid transfer system includes elongated conduits connected at one end with couplings to a plurality of fluid reservoirs of a machine or engine and at the other end with a control valve for selective quick evacuation. Evacuation is powered by a pump operably connected to the control valve. Another embodiment includes a first pump for the evacuation of an engine oil reservoir and a second pump for the selective evacuation of transmission and hydraulic fluid reservoirs. The control valve and the pumps may be operated remotely through electrical switches on brackets or on a service panel. Associated methods of removing fluids and replacing fluids from a plurality of reservoirs includes coupling the fluid transfer system to the reservoirs.

Abstract: A pump station including a structure that includes at least one inlet chamber and at least one discharge chamber arranged on a different level. A separating wall is arranged within the structure between the two chambers, and at least one pump delivers a liquid from the inlet chamber through the separating wall into the discharge chamber. The discharge chamber includes a discharge opening having an upper edge which is below the liquid level that is present in a discharge downstream of the discharge chamber. The pump is provided with an upwardly extending liquid conveying device which ends in an open outlet that opens into the discharge chamber above the upper edge of the discharge opening.

Abstract: With a method of controlling the flow in a flow system where a liquid flow contains a particle concentration, the liquid flow is surrounded by a carrier liquid. The liquid flow and carrier liquid are led into a central channel in which there is provided an observation area (4) where measurements of the liquid flow are effected. The result of the measurements are used to lead the liquid flow into one of several channels, in that control liquids are introduced into the liquid flow before this reaches the channels, the control liquids being derived from a capillary pump structure which pumps on the basis of an electro-kinetic effect, e.g. an electro-osmotic effect. In a preferred embodiment, the pump structure consists of two capillary structures, to each of which an electrical field can be applied. Depending on the strength of the field, the amount of control liquid will be able to be controlled so that the liquid flow with the particle concentration can be led to one of two channels.

Abstract: In a hydrogen supply system, a hydrogen-containing gas is circulated by a circulating pump if a requested hydrogen gas circulation amount VH is less than or equal to a first circulation amount V1. If the requested hydrogen gas circulation amount exceeds the first circulation amount V1, a first control valve is opened so that the circulation amount V1 of hydrogen-containing gas is circulated by a first ejector, and in addition, a circulation amount of hydrogen-containing gas equal to the difference between the circulation amount V1 and the requested hydrogen gas circulation amount VH is circulated by the circulating pump.

Abstract: A hydraulic power assembly (10) includes an electric motor (30) disposed on a removable top (26) outside a tank (12) defining a chamber (25). A first pump (32) depends from the removable top (26) and into the chamber (25) and includes a first inlet (34) and a first outlet (35) to deliver fluid to a fluid line (36) and a fluid distribution manifold (38) disposed on the removable top (26). A leakage line (52) extends from the pump (32) and through the removable top (26) and back through the removable top (26) and drains into the chamber (25) for determining if the pump (32) is operating efficiently. A heat exchanger (78) is adjacent the motor (30) for cooling the hydraulic fluid as it is returned into the chamber (25) thereby cooling the fluid in the chamber (25). The tank (12) also includes a liner (74) for reducing the noise of the pump (32).

Abstract: A method and apparatus for use in conjunction with a plasma reaction chamber provide both throttling functionality and independent vacuum isolation for a turbomolecular pump. A throttle valve provides for precise reaction chamber pressure regulation, and a gate valve prevents extended exposure of the turbomolecular pump to atmospheric conditions during cleaning or other maintenance operations. The throttle valve and the gate valve may be actuated independently.

Abstract: The liquid supply system comprises a pump for delivering a liquid under high pressure and a vaporizer for vaporizing the liquid delivered from the pump. The liquid vaporized in the vaporizer is supplied to a reaction chamber. A pressure gage is provided in a passage extending from the pump to the vaporizer. A monitor device is provided so as to indicate a pressure, based on an output of the pressure gage.

Abstract: A fuel tank cover assembly for a fuel tank of a vehicle includes a cover adapted to close an opening in the fuel tank having a fuel reservoir disposed therein and a fuel filter disposed within and attached directly to the cover to filter fuel from the fuel tank to an engine of the vehicle.

Abstract: A dual fuel tank (10) including first fuel tank (12) and a second fuel tank (14). A single fuel hose (16) allows fuel to enter the first fuel tank (12) from an outside source. When the fuel level in the first fuel tank (12) reaches an overflow level (17), fuel passes through a transfer tube (18) from the first fuel tank (12) into the second fuel tank (14). A transfer fuel pump (20) communicates fuel from the second fuel tank (14) to the first fuel tank (16) such that the level of fuel in the first tank (12) is maximized relative to the available fuel in the system. A main fuel pump (22) communicates fuel from the first fuel pump (12) to a remote target (24). In this way the fuel is available from a single location within the dual fuel tank (10) at a wider range of angles of vehicle travel.

Abstract: The present invention is a more efficient compressor control system and a more efficient method of operating a multiple compressor system because the method and control system are a function of both the system pressure and the volumetric flow rate capacity of the system. Specifically, a compressor is loaded or unloaded from the compressor system after sensing the actual system pressure and volumetric flow rate capacity. The inventor(s) of the present invention have discovered that it is more efficient to control the compressors upon sensing both the pressure and volumetric flow rate capacity of the fluid. Moreover, controlling the compressor system in response to sensing both the pressure and volumetric flow rate capacity of the fluid insures that the appropriate blend of compressors is loaded to the system in order to produce the most suitable pressure and volumetric flow rate capacity.

Abstract: The present invention is a more efficient compressor control system and a more efficient method of operating a multiple compressor system because the method and control system are a function of both the system pressure and the volumetric flow rate capacity of the system. Specifically, a compressor is loaded or unloaded from the compressor system after sensing the actual system pressure and volumetric flow rate capacity. The inventor(s) of the present invention have discovered that it is more efficient to control the compressors upon sensing both the pressure and volumetric flow rate capacity of the fluid. Moreover, controlling the compressor system in response to sensing both the pressure and volumetric flow rate capacity of the fluid insures that the appropriate blend of compressors is loaded to the system in order to produce the most suitable pressure and volumetric flow rate capacity.

Abstract: In a fuel supply system for an internal combustion engine of a motor vehicle with at least two fuel feeding aggregates arranged in a fuel tank, a control unit controls the fuel feeding aggregates, so that in dependence on determined data for longitudinal and/transverse inclination angles of the vehicle, at least one of the fuel feeding aggregates which provides a suction of fuel.

Abstract: A method and apparatus are provided for continuously dispensing precise quantities of a liquid from a dispenser holding tank into a receiving tank. A first elastic tube permits fluid flow between the holding tank and the receiving tank and a first peristaltic pump controls the flow rate of liquid through the first elastic tube. A second elastic tube permits fluid flow between the holding tank and the receiving tank and a second peristaltic pump controls the flow rate of liquid through the second elastic tube. The flow rates through the first and second elastic tubes are independently controlled. The flow rate through the first elastic tube is maintained generally constant and at a substantially greater rate than the flow rate of the second elastic tube. The flow rate in the second elastic tube is varied to maintain a desired total flow rate into the receiving tank.

Abstract: The EVRU is essentially an eductor, configured and designed, to capture and recover hydrocarbon fluids (gases and/or liquids) and/or other vapors and recombine and reinject into the system so that all the fluids are combined into a closed system to reduce or eliminate emissions (Greenhouse gases, VOC's, HAP's, CO, NOX and any other air pollutants). A measured, known volume of higher pressure fluid is fed into the eductor which draws measured, known volumes of lower pressure, hydrocarbon fluids and/or other vapors from emission (Greenhouse gas, VOC, HAP, CO, NOX and any other air pollutant) sources, combining the higher pressured fluids with the lower pressured fluids to an intermediate pressured combination fluid that is injected back into existing process equipment to close the system and prevent or minimize harmful emissions (greenhouse gases, VOC's, HAP's, CO and any other air pollutants).

Abstract: A vacuum exhaust system comprising a vacuum chamber; means for introducing a gas into the vacuum chamber; a main pump for exhausting the vacuum chamber and reducing a pressure of the vacuum chamber to a desired pressure; an auxiliary pump disposed downstream from the main pump; and piping for connecting them, wherein an outer diameter of connecting piping as a connection between the main pump and the auxiliary pump is ½ inch (12.7 mm) or less; and a length of the connecting piping and capability of the auxiliary pump are combined so that a back pressure of the main pump becomes 5 Torr or more. This vacuum exhaust system can realize cost reduction through a saving in entire space, simplification of piping construction work, and so on.

Abstract: A sewage system comprising a network of sewage sumps that temporarily store sewage produced in a dwelling or other structure, each of said sumps preferably comprising a computer controller for operating a pump in the sump such that the sewage collected in the sump may be pumped out of the sump and into the collection system in a controlled manner to regulate the flow of sewage material in the system. The regulation of the sewage flow permits the efficient operation of a sewage treatment facility that receives sewage from the network of sewage sumps by insulating the facility from the peak burdens that would be placed on it at certain times of day in the absence of a system that regulates sewage flow into the system at the source of the sewage.

Abstract: A fuel transfer system for transferring fuel from the fuel tank in a boat to auxiliary equipment such as water ski. The fuel transfer system includes a fuel pump, a fuel dispenser that can be attached and removed by means of quick disconnect couplings, and an optional shutoff valve.

Abstract: A fuel system including first and second tank portions, first and second fuel pumps in the first and second tank portions, respectively, a first crossover fuel line for transferring fuel from the second tank portion to the first tank portion, and a second crossover fuel line for transferring fuel from the first tank portion to the second tank portion. In one aspect of the invention the first and second tank portions define a bifurcated tank and the first and second crossover fuel lines are housed completely within the bifurcated tank. In another aspect of the invention, the first and second crossover fuel lines extend partially outside the bifurcated tank.

Abstract: A delivery system and method for delivering a processing solution to a processing tank in a processor containing a processing solution. The delivery system is designed to provide a replenishment solution to the processing tank from a package having at least two separate containers. Each of the containers having a processing solution that is to be provided to the at least one processing tank. The delivery system substantially empties each of the at least two separate containers in the package in an accurate predetermined rate so that all of the at least two containers in the package will be substantially empty at the same time. The delivery system includes a mechanism for filling and emptying the predetermined amount of replenishment solution from the retaining vessel in response to the liquid level sensing system.

Abstract: A method and device for transferring a multiphase flow to a predetermined location through a pipe. The multiphase flow is comprised of at least a liquid phase and a gas phase. The multiphase flow is provided to a flow divider that diverts a gas portion from the multiphase flow. A compressor and a pump are in fluid communication with the flow divider. The main gas portion is boosted by the compressor, and the residual liquid/gas portion is boosted by the pump. A recombination manifold then recombines the gas portion and the residual liquid portion. A single pipe receives the recombined multiphase flow and transfers it to a predetermined location.

Abstract: A water distributing installation controller includes water pumps for supplying clear water from a filtration plant to a distributing reservoir, a level gauge for measuring the water level of the distributing reservoir, a first flow meter for measuring the water supply directed thereto, a second flow meter for measuring the water delivery directed to a distributing area, a pumps-number control part for controlling the number of pumps operated, and a short-term demand prediction part for providing short-term demand prediction data on the water delivery to the pumps-number control part at the request thereof.

Abstract: A fuel system including first and second tank portions communicating with each other such that the first and second tank portions have a substantially equal vapor pressure, first and second fuel pumps in the first and second tank portions, respectively, and a crossover fuel line for transferring fuel in either direction between the first and second tank portions, the direction of transfer depending on the relative level of fuel in the first and second tank portions. Respective first and second shuttle valves control the direction of fuel flow through the single crossover line to maintain substantially equal fuel levels in both bifurcated portions until the tank is empty. First and second jet pumps communicate with the crossover fuel line and provide the suction needed for fuel transfer.

Abstract: The processing installation comprises a processing machine 12 provided with a tank 14 and a recycling device 22 linked to the tank 14 by a feeding pipe 26 enabling a first pump 24 firmly attached to the recycling device 22 to take the liquid from the tank with a set flow rate, to treat the liquid taken and to send the treated liquid back to the tank through a return pipe 28. The feeding pipe has at least one zone that is situated at a lower level than the tank level and that is provided with two conduits 30 and 32 arranged parallel, and a second pump 34 arranged on one of the two conduits 30 as to automatically un-primed the first pump 24.

Abstract: A ball check valve includes a body having a flow path and a turnout path formed therein and provided on a primary side thereof with an inlet and on a secondary side thereof with an outlet. A ball in the body a seating part for the ball, disposed in the inlet of the body and inclined toward the primary side in a state having the flow path laid horizontally, and a guide part provided with a part for causing the ball seated at the seating part to be retracted into the turnout path and guiding the retracted ball to the seating part, are provided. A pumping apparatus for discharging a fluid from a storage tank includes a pump alternating motions of pumping and stopping for controlling the fluid in the storage tank to a predetermined amount, a piping for discharging to the exterior the fluid of the storage tank being forwarded by the pump, and a ball check valve disposed on the piping and adapted to prevent the discharged fluid from flowing backward during stoppage of the pump.

Abstract: The invention relates to a power source for supplying water-based liquid to a system, the power source comprising a container (5) for the water-based liquid and a pump unit (6) which comprises a pump (7) and a power source (8) for the pump, the pump unit being arranged to supply the water-based liquid from the container to the system via a pipe system (4) which is filled with a liquid.

Abstract: A three-way valve is configured as a solenoid operated diverter when the solenoid is used in parallel with a poppet valve. When the diverter is in a first mode, hydraulic fluid entering a first port exits the valve through a system outlet port while hydraulic fluid entering a second port exits through a second port. The solenoid valve is positioned to close the second port when energized in order to shift the system to a second mode. When the solenoid valve is energized to close the second port so that all of the fluid entering the second port opens the poppet valve and exits through the system outlet. By utilizing a poppet valve in parallel with a solenoid valve rather than a valve spool, the three-way diverter is able to operate at higher pressures and higher fluid flow because Bernoulli effects which cause closing of valve spools used in prior art three-way valves do not adversely affect the poppet valve.

Abstract: A plumbing system which, when ambient outdoor temperatures drop below freezing, circulates water to prevent it from freezing, utilizing a check valve to prevent water from flowing back into the water main and further utilizing a relief valve which can open to the atmosphere and relieve pressure in the system if necessary. The system can have two separate circulation pumps, one for hot water and one for cold water.