Abstract: Systems and methods are provided for hydrogen generation utilizing two or more liquid fuel components, using a fuel delivery system comprising a single reversible or bi-directional pump co-operable with flow control means comprising passive or active valves to deliver two or more fuel components to a mixing zone, reaction zone, or reaction chamber of a hydrogen generation system. The pump is operable in a forward direction to deliver one fuel component, and in a reverse direction to deliver a second fuel component. Control of the pump speed, direction and duty cycle of the pump in continuous or pulsed modes provides for delivery of first and second fuel components in desired proportions, to control hydrogen generation. The system also allows for dilution, mixing and flush cycles to be provided using a single pump, reducing the number of active elements required for fuel delivery and flow control in systems using two or more liquid fuel components.

Abstract: Air required for measurement of exhaust gas components is supplied to an exhaust sensor without using a device for generating positive pressure. In a structure for arrangement, in an engine (1), of an exhaust sensor (10) that measures exhaust gas components and requires air for the measurement of the exhaust gas components, an exhaust pipe (5) of the engine (1) communicates with the exhaust sensor (10) through an introduction pipe (15), the exhaust sensor (10) communicates with an intake pipe (2) of the engine (1) through a discharge pipe (16), and an atmosphere pipe (17) open to the atmosphere is connected to the exhaust sensor (10), so that exhaust gas is sucked into the exhaust sensor (10) through the introduction pipe (15) while air is sucked into the exhaust sensor (10) through the atmosphere pipe (17) due to intake negative pressure generated during an intake stroke of the engine (1).

Abstract: In a method or apparatus for closed-loop-control of a fluid conveying system, at least one pump, at least one consumer, at least one controller valve, and at least one armature as an actuator of said control valve are provided. Pressure and volume flow rate of the consumer are controlled independently of each other by means of a decoupling controller.

Abstract: Various pump features are provided. In a first aspect of the subject invention, an evaporation-reduction feature is provided, wherein a pump having an actuator with a nozzle is provided with a releasable cap having a first shield located to entrap a fixed volume of air about the nozzle. In a second aspect, a check valve element return feature is provided wherein a valve seat is located along the pump's internal fluid passage with a plurality of delectable spring arms extending therefrom being deflectable in response to movement of a check valve element away from the valve seat. In a third aspect, a complaint shut-off valve feature is provided. In a fourth aspect, a fluid trapping well is provided, wherein fluid may be trapped within the well portion at various angular orientations of the pump to communicate directly with the pump inlet.

Abstract: A system including a machine and a cassette that moves fluid from one source to another for use in dialysis. The machine includes at least a first set of pressure imposing valve actuators, said valve actuators being pneumatically operated and substantially adjacently disposed, and a cassette receiving portion. The cassette includes a housing adapted to be removably placed in the cassette receiving portion of the machine. The housing includes at least one inlet port adapted to be fluidly coupled to a fluid source, and at least one outlet port. The housing further includes an inlet manifold and a collection chamber, and at least one fluid pathway fluidly coupled to the two. In use, the fluid pathway disposed substantially adjacent the first set of valve actuators such that sequential actuation of the valve actuators moves a fluid through the pathways to the collection chamber.

Abstract: A method and device for generating an ongoing consistent velocity within a pipeline flow in order to achieve fluid homogeneity prior to oil water measurement. A recirculation flow loop withdraws flow from a first point in a pipeline, accelerates that flow with a pump, and reinjects the outflow from the pump through turbulence inducing outlets at a second point in the pipeline upstream of the first flow withdrawal point. The increased turbulence and mixing of the fluid flowing in the pipeline enhances the homogeneity of the oil/water suspension. The more homogeneous fluid recirculating in the flow loop passes through a measurement probe of an oil/water detector, thus increasing the accuracy of the oil/water measurement of the fluid.

Abstract: The present invention provides an exhaust machine which includes a first exhaust tube, a second exhaust tube, a first closed box, a second closed box, a pipe and a motor. The first exhaust tube is connected to the first closed box and the second exhaust tube is connected to the second closed box. The pipe penetrates the first closed box and the second closed box and connects to an exhaust gas source. The pipe includes a first inner opening and a second inner opening. The motor connects to the pipe and drives the pipe to make the exhaust gas pass into the first closed box through the first inner opening or into the second closed box through the second inner opening.

Abstract: The method according to the invention is a method for controlling the purging of a sélective catalytic réduction System (1) for a vehicle. The sélective catalytic réduction System (1) has a pump (4) for reducing agent (3), at least one supply line (5) supplying reducing agent (3) to an exhaust line (10) of the vehicle, and a purge fluid suction device. The method is characterized in that it involves determining a purge duration as a fonction of a state of fill of the supply line (5) prior to activation of the purge phase, and in that the method forther comprises the updating of the purge duration during purging.

Abstract: A method and apparatus for collecting greywater from greywater sources such as bathtubs and showers before the greywater can enter the existing plumbing through a drain, without altering the plumbing, and communicating the greywater to a storage reservoir for use with irrigation landscaping, the apparatus including a drain cover and water inlet, and a pump providing a vacuum force for communicating the greywater through a communication conduit to the storage reservoir.

Abstract: The invention relates to a peristaltic system (50), which comprises at least two pumps (30, 30?) that can be separately actuated, each pump comprising a pump chamber (14) suited for receiving a fluid, a pump element (16) suited for suctioning and displacing a fluid into and from the pump chamber (14), two check valves (12, 12?), one of which (12) is in fluid connection with an inlet of the pump chamber (14) and the other (12?) is in fluid connection with an outlet of the pump chamber (14), and a valve (18) which is closed in the idle state of the pump (30, 30?) and in fluid connection with the check valves (12, 12?). The peristaltic system (50) further comprises a container (40) suited for receiving a fluid, the container being in fluid connection with an inlet of the one pump (30?) and with an outlet of the other pump (30) and flexibly designed at least in some regions such that the volume of the container depends on the volume of a fluid that is received.

Abstract: An apparatus for transferring a fluid from and/or to a system, e.g., an air conditioning system, includes a main compartment having at least one pumping device for pumping the fluid from/to the system, an interface module having at least one gauge which is configured for displaying the pressure of the fluid, and a fluid connection fluidly connecting the gauge to the main compartment. The fluid connection is formed in a double conduit design in order to prevent any leakage of the fluid from the fluid connection.

Abstract: A device for discharging a gaseous medium contains a discharge line, in which a safety valve and a gas jet compressor connected downstream from the safety valve are arranged. Furthermore, at least one storage container is preferably assigned to the gas jet compressor.

Abstract: Various embodiments described in the application relate to an apparatus, system, and method for generating, within a conduit, discrete volumes of one or more fluids that are immiscible with a second fluid. The discrete volumes can be used for biochemical or molecular biology procedures involving small volumes, for example, microliter-sized volumes, nanoliter-sized volumes, or smaller. The system can comprise an apparatus comprising at least one conduit operatively connected to one or more pumps for providing discrete volumes separated from one another by a fluid that is immiscible with the fluid(s) of the discrete volumes, for example, aqueous immiscible-fluid-discrete volumes separated by an oil.

Abstract: The invention relates to a conveying device for conveying a fluid in a conveying direction (9) having one or more drive bodies (1, 1?, 1?, 1??, 11, 11?, 11?, 11??) which can be driven in an oscillating manner by means of a drive system (15, 15?) transversely to the conveying direction. An acceleration of the fluid is achieved by a corresponding movement in translation or by a partially pivoting movement of the drive bodies in the manner of the fin principle known from biology (e.g. aerodynamics and hydrodynamics).

Abstract: A system can include a skid, a support structure to support the skid on a sea floor, mounts connected to the skid, an electrical connector for each of the mounts to power an electric submersible pump housed by a tubular housing, fluid connectors for each of the mounts, tubular housing fluid isolation valves for each of the mounts, at least one fluid bypass that comprises a fluid bypass isolation valve, and a subsea control module for control of the tubular housing fluid isolation valves, the fluid bypass isolation valve and electricity to each of the electrical connectors. Various other devices, systems, methods, etc., are also disclosed.

Abstract: The invention relates to a Powder supply system for supplying powder to a powder spray device comprising a powder supply hopper; a powder fluidizing device for fluidizing powder positioned in the powder supply hopper; a powder pump for conveying powder from the powder supply hopper to the spray device. According to the invention the powder supply hopper is pivotally mounted to a support structure. The invention further relates to a method for colour change in a powder supply system.

Abstract: A pump 24 with speed control is utilized. A dispenser 12 may have a trigger 16 which actuates a valve 16. Dispenser control 18 has “up” and “down” buttons, 20 and 22 respectively. The controls 28 (comprising elements 18, 20 and 22) for the pump 24 are remote from pump 24. The controls communicate with the pump via wires or radio frequency (RF) 26 to regulate pump speed. Quick button (20 and 22) presses will incrementally change the flow setting while long button (20 and 22) presses will change the settings at a higher rate. This control method can also be tied to the controls located on the pump 24. The potentiometer 30 on the pump 24 will set a max setting, and any adjustments at the valve can go below this setting and back up to it, but never exceed it.

Abstract: A system for fertilizing a large area. The system may include a fluid bar configured to be towed by a tractor. The fluid bar may include a fluid passageway with at least one aperture and a sensor or meter in communication with the aperture. The aperture may be configured to receive a hose or other attachment distributing fluid to the ground. The system may include a tank, a pump, pump controller and a filter. The pump flow rate and the outlet flow rate may be displayed on monitoring equipment located within a cab of the tractor. The pump controller may be used by the farmer to variably adjust the fluid pressure in each aperture and consequently adjust the flow pressure of fertilizer added to the ground.

Abstract: A plurality of suctioning flow paths for suctioning mobile phases meet each other at a meeting portion. The meeting portion is connected to an inlet flow path communicating with an inlet of a reciprocating pump. The suctioning flow paths are respectively provided with solenoid valves for opening and closing the respective flow paths. The suctioning flow paths are respectively provided with orifices between the solenoid valves and the meeting portion. The orifices are sections of the respective suctioning flow paths having smaller diameters.

Abstract: A selective catalytic reduction system includes a fluid distribution system for supplying an exhaust gas reducing agent. The system includes a liquid storage tank and a fluid distribution module with a fluid pump that draws liquid reducing agent from the tank volume and provides the liquid at a module outlet port, while simultaneously discharging excess liquid from a circulation line outlet within the tank volume. The circulation line outlet can be located at a bottom portion of the tank volume near other distribution module components to promote liquid circulation around the module components during a fluid distribution period, to promote thawing of frozen reducing agent at and around the module components, and to ensure a continuous supply of liquid to the fluid pump. The distribution module is also capable of purging liquid from fluid lines located outside the storage tank and returning the purged liquid to the tank volume.

Abstract: A fluid pumping device includes a piezoelectric actuator externally coupled to a microfluidic device. The piezoelectric actuator has an axial displacement along a lengthwise axis responsive to application of a bias voltage. The axial displacement of the piezoelectric actuator operates one of an internal valve and an internal pump chamber of the microfluidic device.

Abstract: A particle processing device includes a substrate and at least one fluidic path. The substrate is rotatable with respect to the middle region thereof. The fluidic path is provided in the substrate to extend from the middle region to a peripheral region. The fluidic path transfers a fluid having a particle from an input portion to an output portion of the fluidic pather by using a centrifugal force of the rotation of the substrate. A capturing region is formed between the input portion and the output portion of the fluidic path to have a changeable sectional shape for capturing the particle.

Abstract: A dosing pump includes a dosing chamber (14), a suction channel (32) communicating with the dosing chamber (14) and a pressure channel (20) communicating with the dosing chamber (14).

Abstract: Methods for determining one or more operating parameters for a timing protocol of a microfluidic circuit are provided. In some embodiments, wet out times are measured for certain flow channels, and start times, flow rates and/or other parameters are calculated so that the various fluids in the microfluidic cartridge arrive at certain locations at a desired time and/or in a desired sequence. To help compensate for process variations, one or more fluidic process monitor components/structures may be fabricated along with the functional components/structures of a microfluidic cartridge. Test may be performed on the process monitor components/structures to help identify process variations in the particular microfluidic cartridge at hand. By using the process monitor data, the timing protocol for a particular microfluidic cartridge may be made more accurate.

Abstract: In an hydraulic pressure supply apparatus for a transmission, it is configured to have a first hydraulic control valve supplying signal pressure to a pressure regulation port of a regulator valve that regulates discharged pressure discharged from a hydraulic pump to line pressure; a second hydraulic control valve regulating the line pressure and supply it to a lockup clutch; a connecting section connecting a hydraulic passage connecting the first hydraulic control valve and the pressure regulation port with a hydraulic passage connected to an output port of the second hydraulic control valve; and a selecting mechanism installed at the connecting section to select higher pressure between output pressures of the first and second hydraulic control valves such that the selected one acts on the pressure regulation port.

Abstract: An online sample manager of a liquid chromatography system includes a fluidic tee having a first inlet port, a second inlet port, and an outlet port. A diluent pump moves diluent from a diluent source to the first inlet port of the fluidic tee. A valve has a fluidic intake port connected to a process source for acquiring a process sample therefrom. A pumping system moves the acquired process sample from the valve into the second inlet port of the fluidic tee where the process sample merges with the diluent arriving at the first inlet port to produce a diluted process sample that flows out from the outlet port of the fluidic tee.

Abstract: A system for supplying fuel includes a fuel manifold, a water manifold, and a fluid junction between the fuel manifold and the water manifold. A turbulator downstream from the fluid junction receives a fluid flow from the fluid junction. A method for supplying fuel includes flowing fuel through a fuel manifold, flowing water through a water manifold, and combining a portion of the water from the water manifold with the fuel from the fuel manifold to create emulsion fuel. The method further includes flowing the emulsion fuel through a turbulator.

Abstract: The invention provides a heat transfer composition consisting essentially of from about 62 to about 78% by weight trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)) and from about 22 to about 38% by weight of 1,1-difluoroethane (R-152a). The invention also provides a heat transfer composition comprising from about 20 to about 40% by weight R-152a, from about 5 to about 55% R-134a, and from about 5 to about 75% by weight R-1234ze(E).

Abstract: A system and method is employed to regulate a minimum transmission input speed based on automatic fluid temperature. The system includes a temperature sensor for sensing a temperature of the automatic transmission fluid and a controller for setting a minimum engine speed of the engine based on the temperature of the automatic transmission fluid. The size of a transmission pump may be reduced while the pump is still able to supply enough automatic transmission fluid to friction elements and gear ratios to provide lubrication and enable friction element actuators to engage and disengage the friction elements in a timely and effective manner. In a preferred form of the invention, when the temperature of the automatic transmission fluid is below 210° F., the minimum engine speed is set to no greater than 900 rpm; and when the temperature of the automatic transmission fluid is above 210° F., the minimum engine speed is set to no less than 1000 rpm.

Abstract: The device according to the invention comprises at least one main reservoir (130A, 130B), the or each main reservoir (130A, 130B) being designed to contain a first batch of fuel. It comprises at least one feed line (144C, 144D) for supplying a propulsion engine (16A, 16B) of the aircraft with the first batch of fuel contained in the main reservoir (130A, 130B). The device (18) comprises at least one auxiliary reservoir (132), designed to contain a second batch of fuel separate from the first batch of fuel, the auxiliary reservoir (132) being connected to the main reservoir (130A, 130B). The device (18) comprises an intake line (160) for bringing the second batch of fuel contained in the auxiliary reservoir (132) toward a combustion chamber of the aircraft independent of the or each engine (16A, 16B) of the aircraft.

Abstract: A pump assembly and method of use is described, wherein the pump assembly includes a housing and a pump contained in the housing, wherein the pump has a performance level. The assembly may also include an electrical inlet, a fuel inlet connection, a fuel outlet connection, a pressure regulator, a final filter, an outlet check valve connected to each pump, at least one over pressure relief valve connected to the pump and an over pressure relief passage formed around the pump in the housing, an electronic controller capable of controlling the pump, a fuel filter and a pressure regulator in the housing to form a returnless fuel supply, and/or a final filter. The assembly may be used in a multiple carburetor or fuel injector applications.

Abstract: The invention relates to a device for dosing paint components, the device comprising a container (1) for a material to be dosed, an outlet conduit (2) exiting and starting from the container, a pump (3) connected to the outlet conduit, a suction valve (40) arranged in the outlet conduit before the pump (3), a discharge valve (50) connected to the outlet conduit after the pump, and a dosing nozzle connected to the discharge valve, wherein during a suction stroke of the pump (3) the suction valve (40) is arranged to open and, correspondingly, during an exhaust stroke of the pump the discharge valve (50) is arranged to open, and wherein particularly both the suction valve and the discharge valve are forced-controlled and their closing direction is in a discharge direction of the material to be dosed.

Abstract: A multiple reservoir device comprises a storage space for concurrently reserving multiple substances is provided. The device preferably includes an accommodation module (2) and at least two extensible reservoir apparatuses (322) installed in the module. As one reservoir apparatus discharges part or all of the substance therein, the reservoir apparatus (322) contracts and releases space which, previously occupied by the removed substance, is now used for allowing another reservoir apparatus (322) to reserve substance and/or for allowing the accommodation module (2) to store foreign objects.

Abstract: A sealing water system for flushing a rotating mechanical seal includes a closed circuit. A supply pump is disposed in the closed circuit so as to act upon the rotating mechanical seal with sealing water. The closed circuit is configured to collect and recirculate the sealing water.

Abstract: Systems are provided for gasification operations. The systems may use carbonous gas as part of plant operations. The systems may include a first compressor configured to compress a carbonous gas and a controller. The controller is configured to control the first compressor to transition from compressing a first carbonous gas to compressing a second carbonous gas during startup of a gasification system.

Abstract: The fluidic system including a sheath pump that pumps sheath fluid from a sheath container into an interrogation zone, a waste pump that pumps waste fluid from the interrogation zone to a waste container, in which the flow rate of the sheath fluid is different from the flow rate of the waste fluid thereby drawing a sample fluid from a sample container into the interrogation zone, a detection system that provides a data set of input signals from the sample fluid, an analysis engine that recognizes aggregate particle events in the data set, and a controller that automatically adjusts the flow rate of the sample fluid into the interrogation zone based on the recognition of aggregate particle events, by controlling at least one of the flow rates of the sheath fluid and the waste fluid.

Abstract: An apparatus that uses an optimized body design incorporating one or more interchangeable nozzle inserts with a wide array of discharge orifice sizes, configurations and spacings to efficiently and effectively deliver a pressurized, high velocity, laminar flow air stream to dry, cool, or clean objects that are either stationary or moving transversely through the optimized air stream developed by the apparatus, all while minimizing the operational downtime required to implement the interchangeable nozzle insert modifications to the apparatus.

Abstract: A water inlet unit for an amphibious pump includes a housing having a connecting hole, a first water inlet pipe having a first end connected to the connecting hole and a second end provided with a first water inlet port, a second water inlet pipe having a first end connected to the connecting hole and a second end provided with a second water inlet port, a guide member mounted on the housing and connected to the connecting hole, and a tap detachably locked in the first water inlet port or the second water inlet port. Thus, the water inlet unit has a first water inlet port and a second water inlet port so that the water inlet unit and the amphibious pump are disposed at an upright or transverse state according to the practical space requirement.

Abstract: Flow control devices and methods of using the flow control devices are provided. In a general embodiment, the present disclosure provides a cassette (30) comprising a housing (32) having a constrictor (34), a tube (36) attached to the housing and positioned through the constrictor, and a ball positioned inside the tube. The constrictor can be constructed and arranged to prevent the ball (38) from moving through the tube at the location proximate the constrictor. The ball can prevent fluid flow in one position and be dislodged to allow fluid flow when the cassette is positioned inside a pumping device. As a result, the cassette is designed to prevent free flow of fluid when an enteral feeding tube set is not installed in a pumping device.

Abstract: A microfluidic cartridge for placement onto a parallel pneumatic interface plate of a pneumatic instrument is provided. The cartridge includes a three dimensional fluid channel, in which a fluid is to be transported, a flexible membrane that spans a plane and is part of an outer surface of the cartridge. The three dimensional fluid channel is spatially defined in three dimensions by internal walls of the cartridge and by the flexible membrane. The flexible membrane is in a ground state, when no pressure or vacuum is applied to the flexible membrane. However, the flexible membrane is pneumatically deflectable from the ground state perpendicular to the plane of the flexible membrane in two directions when the cartridge is placed onto the parallel pneumatic interface plate.

Abstract: A hydraulic control device includes a first predetermined portion receiving the oil discharged from a pump, a first channel establishing communication between the pump and the first predetermined portion, a second channel branched from the first channel for supplying oil to a second predetermined portion, a flow passage area regulation unit arranged on the second channel and equipped with a spool that moves in a flow passage area increasing direction when an oil pressure in the second channel increases and in a decreasing direction when the oil pressure decreases, and a bypass channel, which is provided separately from a portion of the second channel where the spool disconnects the second channel, establishes communication between an upstream side and a downstream side of the second channel relative to the flow passage area regulation unit and supplies oil to the second predetermined portion even when the spool disconnects the second channel.

Abstract: The invention relates to a device for conveying a fluid to a filter unit of a medical treatment apparatus, in particular for conveying a dialysing fluid to a filter unit, in particular a blood treatment unit of an extracorporeal blood treatment apparatus, in which device includes one or more means for measuring pressure in the fluid system. Moreover, the invention relates to a method for measuring the pressure in the fluid system of such a supply device.

Abstract: Apparatus and methods for delivering liquid color to a plastic resin processing machine include a scale for weighing a container of liquid color, a pump for removing liquid color from the container, controller for actuating pushers in the pump in a sequence whereby a first pusher is displaced to squeeze the delivery tube while a second and third pusher are not displaced thereby permitting liquid color to flow through the tube from the supply to a first position of tube squeezing, whereupon a second pusher is displaced to squeeze the tube and substantially trapped liquid color in the tube at the first and second position of tube squeezing, whereupon the first pusher permits liquid color to flow through the tube pass the first position of tube squeezing and the third pusher squeezes the tube and thereby forces at least a portion of the trapped liquid color material through the tube pass the first position of tube squeezing thereby supplying liquid color to the plastic resin processing machine at a predetermined

Abstract: A high-pressure pump is comprised of a lower housing, an upper housing and a cover, which are formed independently from each other. Thereby, shapes of the above can be simplified. Although the cylinder and the plunger receive a fuel pressure during a pressurization stroke, the upper housing and the cover do not receive fuel pressure directly from a pressurization chamber. Therefore, the upper housing and the cover can be made thin and light as much as possible.

Abstract: An electrically conductive polyester resin composition which comprises about 60-75 wt % of unsaturated polyester or isophthalic selected from the group consisting of condensation polymers, 25-35 wt % styrene monomer selected from the group consisting of vinyl benzene, and 1-2 wt % conductive powder selected from the group consisting of carbon and graphite, together with copolymerizable monomer in an amount sufficient for reaction with the polyester blend. The present invention also discloses a tank sump made from the same.

Abstract: A fuel pump module includes a reservoir and a jet pump. The reservoir includes first and second prime sockets and the jet pump includes a first tube defining a first nozzle and a second tube defining a second nozzle. The first tube has a lower end disposed in the first prime socket and an upper end configured to engage a first line routed to a first position outside of the reservoir in a fuel tank. The second tube has a lower end disposed in the second prime socket and an upper end configured to engage a second line routed to a second position outside of the reservoir in the fuel tank.

Abstract: A control valve is provided, in particular for metering in a fluid for a delivery pump which is arranged downstream. The control valve has a flow channel, an axially movable valve needle, and a valve element which can be loaded by the valve needle in an opening direction and is arranged in the flow channel. If the valve element is actuated in the opening direction by the valve needle, the fluid can flow back through the flow channel at least temporarily counter to the opening direction of the valve element. Upstream of the valve element as viewed in the backflow direction, the flow channel has a fluidically active shield which keeps the backflow at least partially free of a face of the valve element.

Abstract: A method for propulsion of a marine vessel, a liquid-directing system and a marine propulsion system are presented. Water-directing scoops are moved in a rearward direction while the scoops are dipping into the water. The scoops may be arranged about a hub. Water is scooped using a bottom edge and lower sides of each of the scoops. Each scoop has an open-faced concave interior and directs scooped water towards a centerline and towards a water exit region of the scoop. The water exit region remains above the local or apparent waterline while the water is scooped, directed and ejected. Water is ejected from the water exit region of the scoop in the rearward direction and at a relative exit velocity that is greater than a relative entrance velocity of water being scooped. Rearward ejection of the water expresses a forward thrust of the propulsion system. Other liquids may be used.

Abstract: A portable pressure washer that includes a base and a tank assembly formed as a one-piece structure and for engagement with the base. The tank assembly has a pair of water tanks that are disposed separately from each other and a solution tank that is disposed between the pair of water tanks Each of the tanks is provided with a filler cap. A latch mechanism is disposed at opposite ends of the base for releasably securing the tank assembly with the base. The base houses a liquid pump and air compressor. A manual selector is mounted at the base and has separately selectable positions including a first position in which the pump is connected with the water tanks, and a second position in which the pump is connected with the solution tank. A spray hose is coupled from the pump for directing either of the water or solution when the pump is activated.

Abstract: The invention relates to a functional element (1), in particular a fluid pump, having a housing (5) delimiting a fluid chamber (13) and having an interaction element, in particular a conveying element (8) for the fluid, disposed in the fluid chamber, the housing (5), with respect to the shape and/or size thereof, being able to be changed between at least a first, expanded state and a second, compressed state. The object, to stabilise adequately a corresponding housing, is achieved according to the invention by the housing having at least one stabilisation chamber (19, 20, 25, 26, 31) which can be supplied with a fluid pressure and is different from the fluid chamber, the first state of the housing being assigned to a first fluid pressure in the stabilisation chamber and the second state of the housing being assigned to a second fluid pressure.