Abstract: In the reaction process, at least two educts A, B are divided by a system, assigned to each of them, of slit-like microchannels 1a, 1b into spatially separate fluid lamellae, which then emerge into a common mixing and reaction space 4. The fluid lamellae here have a thickness <1,000 &mgr;m, preferably <100 &mgr;m, at a width thickness ratio of at least 10. It is essential here that educts A, B can emerge as thin fluid lamellae 6a, 6b into the mixing/reaction space 4, each fluid lamella 6a of an educt A being led into the mixing/reaction space 4 in the immediate vicinity of a fluid lamella 6b of another educt B. The adjacent fluid lamellae 6a, 6b then subsequently mix by diffusion and/or turbulence. As a result, the mixing operation is accelerated substantially compared with conventional reactors. In the case of rapid chemical reactions, the formation of undesirable by-products or secondary products is largely prevented in this manner.

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 pressure difference adjusting device is provided for a valve having a first inlet for a first fluid of a first pressure, a second inlet for a second fluid of a second pressure not equal to the first pressure, and an outlet. The pressure difference adjusting device includes two rotatable elements that are mounted in a meeting area of the incoming fluids. The elements mesh with each other to drive each other when the elements are subjected to impact from the incoming fluids.

Abstract: A system for metering a fluid, such as a catalyst in an industrial chemical process plant, includes a controller, a drive pump assembly and an injection pump assembly. The drive pump assembly forces reciprocation of the injection pump assembly via a controlled flow of hydraulic fluid. The injection pump assembly includes a drive cylinder and at least one injection section. The drive cylinder receives pressurized fluid from the drive pump assembly and causes metered fluid to be drawn into and expelled by the injection section. The position of reciprocating components of the injection pump assembly is detected between stroke limits and converted to a velocity signal. Closed-loop control of the flow from the injection pump assembly is implemented by the controller via the drive pump assembly based upon the actual velocity of the reciprocating components of the injection pump assembly and a commanded velocity.

Abstract: The invention is a water wheel supplying energy to a pump. The pump will typically be used to apply chemical treatments to the water stream. Some examples of chemicals to be added are acids or bases to bring the pH to an acceptable level, precipitation aids for suspending metal out of water, coagulants to aid in filtering dissolved solids out of water, flocculants to aid in filtering dissolved ions out of water, chlorine, or coloring to prevent growth of algae.

Abstract: The process and device according to the invention make it possible to reduce the pressure build-up in the head space as a function of the quantity of inflow medium. It also makes it possible to maintain or create defined flow conditions in the head space gas. This is accomplished by measuring the quantity of gaseous and/or liquid inflow medium and then venting the head space gas as a function of the quantity of inflow medium.

Abstract: A hot water tempering system tempers the output of a hot water storage tank by mixing that output with a cold water flow in a defined ratio to produce a flow of water at a steady intermediate temperature. The system comprises a bypass line connectable between an inlet line and an outlet line of the storage tank, and a proportional flow controller for controlling the relative water flow rates through the tank and through the bypass line. The flow controller may be positioned on the inlet line and the bypass line, or on the outlet line and the bypass line. The tempering system allows the temperature of water in the storage tank to be maintained near the boiling point for killing organisms, but at the same time ensures that water leaves the system at a temperature sufficiently low to be safe for human use.

Abstract: A direct action fluid motor and injection pump is disclosed which injects small quantities of a second fluid into a primary fluid stream. A housing has an inlet and an outlet connected to a primary fluid conduit. The housing contains a stepped piston which reciprocates in response to the fluid pressure applied alternately to the closed small and large face of the piston. A valve set alternately closes one and opens the other of the faces. A valve positioner carried with the piston is held in alternate stable positions by cooperating springs on the valve positioner and a post in the piston. Stop members are located above and below the piston travel, each associated with an actuating spring. The valve positioner is preshifted at the end of the stroke, using the full force of the piston, by stop members to move the valve positioner and valve set to an intermediate unstable position.

Abstract: A valve, to control the injection of lubricant into a viscous material pump pipeline is disclosed. The valve is operated off a parameter of the viscous material pump such as hydraulic fluid pressure from one or both differential/popper teed lines for the pump. The preferred valve includes coaxial water and hydraulic oil spools on opposing ends of a rod, and two hydraulic signals are used to control water flow through two outlets, to properly feed water to two lubricant injectors. Inlets and outlets of the valve are all located along one surface, and an intermediate chamber is provided to receive any leakage past the rod seals.

Abstract: The device (D) for controlling the reciprocating displacements of a differential piston (1) includes at least one valve associated with each of the parts of different cross-sections of the piston (1), and a rocker mechanism (B) urged by a spring in a direction transverse to the direction of displacement of the piston (1). The rocker mechanism (B) is designed to control the valves in closure and/or opening at each end of stroke in order to reverse the movement of the piston (1); a push rod (55) is mounted so that it slides relative to the piston (1), whilst being able to be driven by this piston, the push rod being capable of coming to bear, at each end of stroke, against a limit stop (s, 14a) connected to the enclosure, in order to give rise to the rocking of the mechanism (B).

Abstract: This invention relates to an accurate mechanical proportioning pump and/or mixing device that is adaptable for industrial, commercial and consumer use that incorporates a series of piston-seal-cylinder configuration with necessary check valves and seats that automatically proportionally pumps and/or mixes such fluids as soaps, fruit concentrates, food syrups, pesticides, herbicides, fungicides and fertilizers based on various other fluid driving mediums with a high degree of accuracy of controlled fluid to driving mediums.

Abstract: The present invention provides a self-powered proportioner which can automatically, proportionally mix two fluids in a low ratio. A fluid gating means is disposed intermediate a fluid supply and a motor piston to cause reciprocating movement of the motor piston within a motor cylinder. A connecting rod secured to the motor piston is disposed within a cavity in the housing extending between the motor cylinder and a slave pump cylinder. A slave pump piston is secured to the connecting rod for providing responsive reciprocatory movement of the slave pump piston within slave pump cylinder for pumping a second fluid. A connecting rod seal is interposed between the cavity wall and the connecting rod intermediate the motor cylinder and the slave pump cylinder preventing fluid communication through the cavity between the motor cylinder and the slave pump cylinder.

Abstract: An improved method and apparatus for applying a multicomponent coating composition onto a substrate. The method comprises separately transporting at least one component under pressure to a proportioning device which provides a controlled ratio of the components. The components of the coating composition are then mixed and coated onto the substrate at ambient temperature or, to accelerate curing, at moderate temperatures. The method is especially useful for applying multipackage refinish coating compositions.

Abstract: The improved automatic dampening water replenisher has two flow sensors that respectively measure the flow rates of stock solution and diluent water which are to be mixed to prepare dampening water with which the tank of dampening water is to be replenished, and this enables the concentration of dampening water in its tank to be maintained within a predetermined range at all times. If desired, the apparatus (the replenisher) may be equipped either with components for computing, displaying and storing the total flows of stock solution and diluent water or with an emergency alarm generator which issues an alarm indicating the occurrence of aberrations in the concentration of dampening water in its tank. This offers the advantage that normal operation of the apparatus can be resumed as soon as power failure is remedied, or the suspension of water supply and other troubles can be readily identified and corrected to avoid unwanted variations in the concentration of the dampening water.

Abstract: The present invention is a post-mix beverage dispensing valve for accurately maintaining the proper ratio of two liquid beverage components. The present invention includes a valve main body having a gear pump secured thereto. The gear pump includes two sets of oval gears. One set of oval gears is in fluid communication with a source of pressurized carbonated water, and the second set is in fluid communication with a source of syrup. The valve body also includes solenoid operated pallet valves for each of the beverage components. Ratioing of the solenoid provides for simultaneous opening of both pallet valves whereby the pressurized carbonated water flows between the carbonated water gears and is swept thereby through the valve body to the dispensing nozzle. One gear of each gear pair is secured to a common rotating shaft. Pressurized carbonated water provides for the rotation of the syrup gears, thereby providing for the pumping of the syrup to the nozzle.

Abstract: Apparatus for dilution of one liquid with another, such as a pesticide concentrate diluted with water, wherein dual piston displacement pumps are each actuated respectively by a coil spring and by an opposed hydraulic actuator with a piston powered by the flow of the diluting liquid, the hydraulic actuator being controlled by a control means for alternating reciprocation of the respective pistons of each hydraulic actuator responsive to the rate of flow of the diluting liquid so that a constant dilution ratio is maintained regardless of the pressure of the liquid supply. The control means includes a vane that is pivoted alternately by the action of the hydraulic actuator pistons to direct the flow thereto of liquid for dilution.

Abstract: A post-mix dispensing valve for a beverage dispenser, including a self-contained volumetric ratio control device incorporated therein to provide positive ratio control. The device includes a single piston in a single cylinder, syrup and soda chambers, and self-contained direct acting electrical solenoid valve means for controlling the flow through the volumetric ratio control device and the reciprocating action of the piston. The soda pressure drives the piston. This post-mix dispensing valve can be used with any of a figal, a bag-in-box, a gravity tank, or a non-returnable container under no pressure or under a low pressure of 5 to 10 psig. This invention also includes a non-returnable, pressurizable syrup container.

Abstract: The mixer and fluid filtering unit is connectable to a source of a first or base fluid under pressure and to a source of a second fluid or solute which may be a solute pumping unit. The base fluid flows into a mixer section through a first inlet, and a small proportion of the base fluid is diverted into a filter section where it is filtered and passed out as motive fluid for the solute pumping unit. The remainder of the base fluid flows through a compensating valve assembly and into the mixer section where it is mixed with solute by a fluid pressure operated ratio valve assembly which maintains a variable preset mixing ratio. A sensor connected to the compensating valve assembly senses filter pressure drop and adjusts the compensating valve assembly in accordance therewith.

Abstract: A pump assembly includes commonly driven coaxially positioned helical rotors, rotatably engageable within corresponding stators. Each combination of rotor and stator defines a pump having a different volumetric flow rate, each pump discharging to a common discharge port, thereby providing an accurately proportioned mixed fluid of two separate fluids. The rotors are integrally molded from a thermoplastic material and include an integral drive shaft suitable for interconnection to an electric motor. The two rotors are simultaneously driven by a common drive shaft and therefore produce a constant mixed ratio irrespective of rotational speed.

Abstract: In an apparatus for pneumatically discharging concrete fed hydromechanically in a dense stream, using for the hydromechanical feed a concrete pump having a hydraulic drive comprising at least two cylinders with opposed pistons, said pump having synchronization control by a displacer circuit conducting the working medium displaced by a piston, and having a dosing means for an additive serving as an accelerating agent, whose drive is connected to the hydraulic circuit of the concrete pump drive, the inventive proposal is that the drive of the dosing means is connected to the displacer circuit and designed as a reciprocating piston drive whose absorption amount corresponds to the displacement amount of the working pistons and is added in both directions to the displacement amount of each working piston.

Abstract: A post-mix dispensing valve for a beverage dispenser, including a self-contained volumetric ratio control device incorporated therein to provide positive ratio control. The device includes a single piston in a single cyinder, syrup and soda chambers, and self-contained direct acting electrical solenoid valve for controlling the flow through the volumetric ratio control device and the reciprocating action of the piston. The soda pressure drives the piston. This post-mix dispensing valve can be used with any of a figal, a bag-in-box, a gravity tank, or a non-returnable container under no pressure or under a low pressure of 5 to 10 psig. This invention also includes a non-returnable, pressurizable syrup container.

Abstract: A ratio device for dispensing first and second liquids in a preselected ratio, which comprises a housing assembly having two gear pumps interconnected for concurrent operation. One of the gear pumps is configured also to act as a liquid powered motor operative in response to the pressure and flow of the first liquid.

Abstract: A hydraulic system having multiple actuators is provided with positive pressure flow equalization for both advancing and retracting movements of the system by means of first and second flow divider elements for each actuator. The flow divider elements are cross-coupled between the actuators, a controllable source of pressurized fluid and a reservoir. The flow divider elements are positive-displacement gear or vane pump units that are connected by a common shaft for coordinating fluid flow to the various actuators. Two or more of the actuators can be connected for lifting a load such as an automobile, the system being provided with safety latches at each actuator, the flow dividers not only coordinating the actuator movements during normal raising and lowering operation, but also preventing loss of synchronization of the actuators in case of engagement of a subset only of the latches.

Abstract: A piston-powered fluid dispensing system is disclosed. The fluid dispensing system comprises an apertured base, a hollow elongated cylinder, an apertured piston, a hollow orificed overcap, an elongated fluid passageway, an externally-channeled hollow extension, and three valves. The elongated cylinder, which defines a longitudinal axis, carries the base at one end portion and defines a hollow neck at the opposite end portion. The piston, disposed in the cylinder for providing two cylinder chambers, defines a circumferential portion that is slidably engageable with the cylinder substantially along the length of an inner surface. The overcap, carried by the cylinder and rotatable about the longitiudinal axis, defines an internal fluid-mixing region and a throat that is in fluid communication with the fluid-mixing region. The throat, carrying the externally-channeled extension, is slidably engageable with an inner surface portion of the cylinder neck.

Abstract: A device for injection of liquid fertilizer into an irrigation pipe includes an axisymmetrical housing (I) adapted for insertion into the pipe line (III). The device comprises an axial turbine impeller (II) rotatably positioned in the housing, the impeller including several vanes (20) surrounded by a shroud (22) and a flat, annular rim (6) outstanding from the shroud and closely surrounded by the housing walls. The rim contains, on one or on both of its flat sides, a side-channel pump of known design which includes a plurality of radial vanes (30) inserted into an annular portion of the flat side and a channel (33) recessed in the adjoining housing wall portion cooperating with the annular vane portion and extending from an inlet end (34) to an outlet end (35), the two ends being separated by a non-recessed wall portion (36).

Abstract: The device for injecting a fluid into a network comprises storage and supply means (1, 2) for the fluid to be injected, an injector (11) and a proportioning unit (7) to obtain a constant injection ratio. The injector (11) comprises two housings (12) each provided with a fluid-tight pocket (15) of variable volume. Said injector further comprises two distributors (16,17): a first distributor (16) providing for the filling of a pocket (15a) with the fluid to be injected and simultaneously for the emptying of the other pocket (15b): a second distributor (17) providing in parallel for the filling with an auxiliary fluid of the housing (12b) containing the pocket (15b) being emptied and simultaneously for the emptying of the other housing (12a). The injector (11) finally comprises actuation means adapted to generate in synchronism a switching of the distributors (16, 17) so as to invert the function of the housings (12) and of the pockets (15).

Abstract: This invention relates to a pumping device that is adaptable for commercial and residential use that incorporates a series of pistons and valves that automatically and proportionally injects such fluids as fertilizers, oils, soaps and food syrups into various other liquid mediums.

Abstract: The fluid proportioning and mixing unit includes a metering and pumping section and a mixer unit. The metering and pumping section is divided into a first solute section and a second section exclusively used for the conduction of motive fluid. At least two metering units extend between the first and second sections and operate to draw solute in through the first section and expel measured volumes of solute back into the first section. Simultaneously, the metering units receive motive fluid from the second section and expel motive fluid back into the second section. The expelled motive fluid is directed to an equalizer system which provides lift height compensation for the solute supply. A mixer unit receives measured volumes of solute from the first solute section and incorporates a ratio valve assembly to mix this solute with a base fluid in a variable preset ratio which is maintained by the ratio valve assembly.

Abstract: A dilution valve dilutes a liquid feed concentrate with water, to give a dilute feed for feeding to piglets. The valve has a plunger (20) which reciprocates within a mixing chamber (66), to which the water and liquid feed concentrate are admitted through separate valves (48,70). Water pressure drives the plunger (20) in a charging stroke, during which water and liquid feed concentrate are admitted to the mixing chamber (66). A change-over spring (60) causes the plunger (20) to change from a charging stroke to a delivery stroke, during which dilute feed is delivered, the plunger (20) undergoing alternate charging and delivery strokes driven by the pressure of the incoming water.

Abstract: A system for controlling the output flow rate of a second pump to proportionately track the output flow rate of a first pump in which the first pump produces an electrical signal at each successive stroke thereof. An electrical circuit produces an electrical control signal from the first pump stroke signal for controlling the flow rate of the second pump.

Abstract: A liquid additive injection pump has a hydraulic motor comprising a differential piston assembly reciprocable in a housing under the urging of a primary liquid into which an additive is to be injected. The piston assembly includes valves to effect the transfer of a primary fluid charge from the pump motor to a discharge passage and to effect reciprocation of the piston assembly. The motor piston is connected to a central axially disposed piston rod which extends into an additive injection pump cylinder. In one embodiment a floating additive injection pump piston has a stack of displacement control washers engaged therewith and disposed on the piston rod. In another embodiment the pump piston passes through a seal member between a pump chamber and a bypass chamber and an elongated spiral groove formed on the periphery of the pump piston determines the effective displacement of the pump.

Abstract: A fluid-dispensing system is disclosed. The dispensing system comprises an apertured base, a hollow cylinder, an apertured piston, an orificed overcap, a fluid passageway, an apertured extension, and three valves. The piston, slidably engageable within the cylinder, divides the cylinder into two chambers. The cylinder defines a hollow neck at one end portion thereof. The overcap defines an apertured throat that is slidably engageable within the cylinder neck. The throat aperture of the overcap provides fluid communication between one cylinder chamber and a fluid-mixing region spaced from the fluid-dispensing system. The fluid passageway, disposed through the piston aperture, provides fluid communication between a pressurized-fluid source and the fluid-mixing region via at least one orifice of the overcap. The base defines an apertured sleeve. The hollow extension, slidably engageable within the sleeve, is in fluid communication with the one overcap orifice via the fluid passageway.

Abstract: The invention relates to a device for injecting a metered product into a main circulation of liquid, comprising a metering piston (28) coupled to a stepped piston (11) whose motion results from the pressure of the main fluid in a known manner. The piston (28) interacts with a metering cylinder (10) which is in permanent communication with the lower part of the liquid outlet chamber (8). The mixture of the products is thus confined to the outlet of the device, while no leakproof sliding of a component on contact with either of the liquid and product is necessary, and this eliminates the risks of abrasion of the seals due to deposits on the sliding component. In addition, since the inlet chamber (6) for the main liquid is annular, it permits a filter (33) to be easily installed.

Abstract: A pump for injecting fertilizer or other material into a pressurized water supply line comprises an impeller including a housing having an inlet connectable to the pressurized water supply line, an outlet vented to the atmosphere, and impeller vanes rotatably mounted within the housing to be rotated by the pressurized water flowing therethrough from its inlet to its outlet. The pump further includes an injector coupled to the impeller to inject the material into the water supply line at a point downstream of the impeller.

Abstract: A sprayer mixes water and concentrate on an "as-used" basis. A preselected amount of concentrate is dispensed into a mix tank for each reciprocation of a proportioning pump set. The amount of concentrate dispensed is selected by varying the pump set stroke. The pump set is reciprocated by reversing flow into one power line and out of another power line fluidly connected to the set. The flow is reversed by sliding a spool within a bore from one position, where sets of apertures in the spool are aligned with ports of the bore to connect a source of water under pressure to one power line and the other power line to an outlet line leading to the mix tank, to another position, where the aperture sets are realigned with the ports to reverse the connections. A meter measures the flow of water to the mix tank. The meter connects current to open one of two control valves connecting the bore ends with the source to move the spool to its next position hydraulically.

Abstract: An apparatus for charge-wise dosing a metered volume quantity of liquid medium to be supplied continuously under delivery pressure, comprising a pair of serially connected cylinder-and-piston assemblies of different diameters the cylinder blocks being arranged axially relatively to each other, forming a composite housing; a supply conduit for the flowing medium connected to the smaller diameter cylinder block and a filling nozzle connected to the larger diameter cylinder block and containing a discharge opening; a tube operating as a piston member for reciprocation in the composite housing, which tube is in direct communication with the smaller diameter cylinder block and connected to the larger diameter cylinder block via a passage provided in the larger diameter piston.

Abstract: Method and apparatus are described for handling a pressurized fluid inletted from a pressurized fluid supply line into a container and outletted therefrom through a pressurized outlet line in order to avoid pressurizing the container. According to the described method and apparatus, the energy of the fluid inletted from the pressurized fluid supply line into the container is utilized for driving a motor, thereby reducing the pressure of the fluid stored in the container; and the motor is utilized for driving a pump which increases the pressure of the fluid outletted from the container to the pressurized fluid outlet line. The invention is described particularly with respect to hot water supply systems in order to avoid the need of making the storage tank of pressurized construction.

Abstract: An improved variable proportioner is provided which includes a spring biased lost motion connection between the motor piston and the slave pump piston thus providing for accurate adjustability of the metering proportion as well as prevention of stalling of the slave piston against the front cylinder wall. A pivotable connection of the toggle lever spring is also provided to reduce bending of the spring and to enhance its life span.

Abstract: The invention is directed to a process for the production of a flowable reaction mixture from at least two flowable reaction components which comprises conveying said components from storage zones as main flows, metered in a predetermined ratio, to several mixing zones which are connected in parallel, said process further characterized in that the main flows are divided up in each case into a number of divisional flows corresponding to at least the number of mixing zones, which divisional flows are combined with each other in pairs, and the metering ratio of the divisional flows corresponds to the metering ratio of the main flows.

Abstract: A liquid additive injection pump has a hydraulic motor comprising a differential piston assembly reciprocable in a housing under the urging of a primary liquid into which an additive is to be injected. The piston assembly carries valves which are responsive to movement of the piston assembly to open and close to effect the transfer of a primary fluid charge from the pump motor to a discharge passage and to effect reciprocation of the piston assembly. The motor piston is connected to a central axially disposed longitudinally extending piston rod which extends into an additive injection pump cylinder and engages a floating additive injection pump piston having a stack of additive pump displacement control washers engaged therewith and disposed on the piston rod. A spring biased toggle type linkage snaps the motor valves into open and closed positions to provide positive movement of the valve members.

Abstract: A mobile metering apparatus is provided for metering into a liquid stream or flow an agent which is to be metered or dosed in a quantitative proportional relationship. The metering apparatus contains liquid meter through which passes the liquid flow and a metering pump connectable to a dosing agent reservoir on the input side thereof and to a metering location at the output side thereof. The metering pump meters the agent from the reservoir into the liquid flow as a function of signals supplied by the liquid meter. The liquid meter is installed in a short conduit portion provided with an inflow connection and an outflow connection. The short conduit portion, liquid meter and metering pump are mounted at a supporting frame enclosing the aforementioned members on all sides. The drive of the metering pump is accomplished by the pressure of the liquid flow.

Abstract: There is provided a proportioning system for mixture of the fluid to a liquid-carrying main line in a substantially constant, presettable proportion to the flow rate of the liquid in the main line. The system comprises pump means for drawing a quantity of fluid from a vessel and for injecting the quantity into the main line, pump-drive means impactable by the main-line liquid for driving the pump means, flowmeter means for monitoring the instantaneous flow rate of the main line and converting the flow rate into a flow-rate proportional rotary motion of an output member of a flowmeter means.

Abstract: A flow divider is described for distributing a fluid, such as fluid oil, in equal volumes from a source to each of a plurality of fuel nozzles of a gas turbine machine. The flow divider includes a plurality of intermeshing gear sets, two rotatable shafts for connecting the gear sets together for operating in unison, a plurality of particulars axially positioned between adjacent gear sets, first and second partition retainers for immmovably positioning the partitions in the axial direction on the rotatable shafts and a split housing for enclosing the gear sets and shafts. Each of the rotatable shafts is mounted on bearings at each end of the housing with one end of each shaft being fixed and the other end being permitted to slide axially.

Abstract: A volume proportioning system includes a pressurized supply of a primary carrier liquid, one or more sources of concentrate, a proportioning interconnection between the carrier liquid and the sources of concentrate by which the proportions are controlled regardless of the flow rate or pressure of the carrier liquid, in which the carrier liquid also provides the motive power for moving the concentrate and the carrier liquid itself to an operator controlled discharge point, the discharge being infinitely variable under the control of an operator.

Abstract: A pair of spool valves C and D connected in tandem are balanced between pressures of reactant gases supplied to a fuel cell power plant G to control the pressure differences between the gases so as to maintain those pressures substantially in the proportions necessary for operation of the fuel cell.

Abstract: A combined check valve and fluid injector includes a valve body with an inlet, outlet and valve seat. A pump chamber is positioned at the outlet side of the valve seat and has a fluid inlet. A hollow piston member moves in the pump chamber and the hollow connection to the valve body. A ball check valve closing the valve seat is provided with a spring loaded valve follower. A hollow actuating rod extends from the valve follower into the hollow piston with a lost motion connection and has openings for discharge of fluid in the valve body. The piston is limited in movement by an adjustable stop member and has a check valve which opens on upward movement. Opening of the valve moves the rod and piston to pump fluid from the pump chamber into the fluid flowing through the valve body. A counter, or the like, may be provided for operation by piston movement for measuring frequency or distance of movement. Certain modifications may direct the fluid outside the chamber rather than into the valve body.

Abstract: In order to increase the dosing precision it is proposed to control the flow of the main component and thereby the measured flow of the main component is used as a variable desired value, and with the control of the flow of the secondary component the control value (the actual value) of the flow of the main component is used for determining or defining the desired value of the flow of the secondary component (which latter-mentioned value is proportional to this control value); as well as to use for this purpose a geared pump (P.sub.8) for the feeding of the main component to a servo controlled member or system (the geared pump being arranged between a pressure vessel (D.sub.S) and a measuring transducer (12)), an electrical machine M.sub.8, which is operable as a motor and drives the pump (P.sub.8) for the main component, which with the electrical machine M.sub.8 which is associated with it forms a regulating element, an electronic four-quadrant controller (16) for the machine (M.sub.

Abstract: A warm water storage system for supplying warm water to a network with water under pressure characterized in that the storage is pressureless and takes place in a ventilated container, and that between the take-off region of the container and the warm water supply network is incorporated a booster pump.

Abstract: A device for transferring pressure from one fluid stream to another utilized in conjunction with a storage vessel where fluid is stored at ambient pressure and a desired temperature. An entering fluid stream at another temperature is introduced to the device under pressure and the energy of the fluid stream is utilized to pump a second fluid stream of approximately the same flow and pressure from the vessel. The entering fluid flows into the vessel at approximately ambient pressure at its original temperature where it replaces the removed fluid.

Abstract: The present invention is a post-mix beverage dispensing valve for accurately maintaining the proper ratio of two liquid beverage components. The present invention includes a valve main body having a gear pump secured thereto. The gear pump includes two sets of oval gears. One set of oval gears is in fluid communication with a source of pressurized carbonated water, and the second set is in fluid communication with a source of syrup. The valve body also includes solenoid operated pallet valves for each of the beverage components. Ratioing of the solenoid provides for simultaneous opening of both pallet valves whereby the pressurized carbonated water flows between the carbonated water gears and is swept thereby through the valve body to the dispensing nozzle. One gear of each gear pair is secured to a common rotating shaft. Pressurized carbonated water provides for the rotation of the syrup gears, thereby providing for the pumping of the syrup to the nozzle.