Abstract: A flow control device for controlling the rate of flow liquid wherein a liquid supply tube is inserted in a liquid supply tube insertion channel extending in the longitudinal direction of the liquid supply tube. A roller is provided for squeezing the liquid supply tube against the bottom of the tube insertion channel. Ridges are provided for squeezing the opposite side edges of the liquid supply tube to a greater degree than the central portion of the liquid supply tube. The bottom of the insertion channel has a first inclined surface inclined with respect to roller bearing grooves for fine adjustment of the rate of liquid flow, and a second inclined surface terminating in the first inclined surface and inclined in the same direction as the first inclined surface but by a greater angle than the first inclined surface for a coarser adjustment of liquid flow through the liquid supply tube.

Abstract: The invention relates to a flow regulator for gaseous or liquid media, comprising a housing (1), a regulating unit (1) which changes its free flow area, depending on the flow pressure of the medium, and further comprising a distributor unit (3) behind the regulating means (2) in the direction of flow. To provide a flow regulator which is still relatively simple in construction yet enables more constant volume limitation to be maintained and is less sensitive to manufacturing tolerances of the individual components, the invention proposes that a disc (4) containing at least one hole (5) be provided between the regulating unit (2) and the distributor unit (3) and be movable to a limited extent in an axial direction at least in the region of the hole.

Abstract: A variable restrictor for controlling flow rate including a ferrule formed of a yieldable material and having an opening at one end cooperating with the carrier line delivering fluid thereto. A passageway in the ferrule communicating with the carrier line terminates at the opposite end of the ferrule which is provided with a conical-shaped end portion cooperating with a recess of a conforming taper provided in a member having a passageway communicating with the utilization device receiving the fluid. The flow rate is regulated by controlling the position of the ferrule relative to the cooperating recess which controls the amount of compression exerted upon the forward end of the ferrule and hence the amount of constriction of the passageway extending therethrough.

Abstract: A throttle in a hydraulic system having a cross section which varies as a function of fluid flow in the hydraulic system. A throttle restriction includes a bore with a wire end segment extending in the bore that reduces the cross section of the bore. The wire end segment has an end face, facing counter to the pressure fluid flow, on which flow forces are operative. The flow forces are capable of positively displacing the wire end segment out of the bore counter to a spring restoring force. The throttle can for instance be used in the hydraulic brake systems in which peaks in volumetric flow and pressure are to be reduced. The throttle can also be used wherever self-cleaning of the throttle restriction is desired.

Abstract: A fluid flow control disc has a central passage for the flow of fluid. The disc has a peripheral lip seal that insures that the fluid flow will not by pass the central passage.

Abstract: A variable orifice device for passing fluent material under pressure includes a piece of resilient material bent out of its normal shape so that one surface is in tensile stressed condition and the other surface is in compressive stressed condition. A slit extends between the two surfaces. Because of the difference in the stressed conditions of the two surfaces, one end of the slit is open and the other end, at the compressively stressed surface, is in force closed condition. The piece of resilient material is mounted in its bent, stressed condition in a frame which holds the material in the bent condition. The piece of resilient material may be cut from silicone rubber tubing such as is used for peristaltic pumps. The frame may be two annular members, one of which is a push fit in the other, with the other having an annular shoulder against which a disc of the resilient material is trapped and sealed by the one annular member.

Abstract: A orifice fitting for measuring fluid flow in fluid pipelines has a seal mechanism to seal the orifice plate to the orifice fitting body. The orifice fitting has an orifice plate carrier which moves downward into a seat slot to position an orifice plate in the fluid flow. An annular seal mounts to the orifice plate assembly for engaging and sealing against the downstream side of the seat slot. A retaining ring mounts to an upstream side of the plate carrier. Threads on the retaining ring allow the ring to be adjusted to set the overall width of the plate carrier assembly to provide an interference fit in the seat slot. Set screws in the retaining ring bear against the orifice plate, which in turn bears against the seal member.

Abstract: A valve includes a rigid washer seated in the valve inlet conduit and supporting a flexible flow control washer having an flow control orifice that constricts with increasing pressure. The washer aperture is axially aligned with the flow control orifice. A cylindrical expansion chamber axially aligned with the orifice and aperture is located immediately downstream of the washer aperture. The expansion chamber has four cylindrical exit ports parallel to the chamber axis and communicating with the valve's valving chamber. Each port has a raised lip about the periphery of the port and extending into the expansion chamber. A bullet is integrally formed with the valve body along the axis of the expansion chamber and extends into the downstream portion of the flow control orifice at all pressures. The bullet has a flared base that directs the water radially into the expansion chamber.

Abstract: A variable flow restrictor valve is disclosed that is adapted to be inserted in a fluid line to provide first and second alternative flow paths therethrough in accordance with the pressure differential between inlet and outlet ends of the valve. The assembly is characterized by use of a moveable orifice tube which defines one of the alternative paths and an intermediate part of a valve housing defines a flow path which forms another alternative flow path having flow therethrough regulated by a stop disk and a valve disk both of which are fixed to the orifice tube on either side of the intermediate part to position the valve disk to either close or open the another alternative flow path in accordance with the aforesaid pressure differential.

Abstract: The invention relates to a tube for peristaltic pumps wherein rotating members progressively compress the tube to force fluid therethrough for discharging at an outlet end. The tube includes a pair of oppositely disposed longitudinally extending notches or grooves defined in the exterior surface thereof which enhance the flexing characteristics of the tube, permit the flattened cross-sectional area to completely seal with minimal force applied by the rotating members and controls the vacuum pressures generated. The depth and geometric configuration of the notches and the durometer of the tube may be selected to control the compression and expansion characteristics of the tube section to generate and control the desired vacuum or subatmospheric pressure levels for a particular application.

Abstract: A fluid flow restrictor comprising a restrictor valve and a flexible tube housed in the valve, and an internally located outwardly biasing spring positioned in the tube such that the tube is biased against the action of the valve, the assembly being adapted to reduce the diameter of the tube with minimal permanent deformation of the tube.

Abstract: A catch flow restrictor plate to control surcharging of water in a sewer system. The restrictor plate is to be placed in a catch basin and consists of a tray, which comprises an upper edge, downwardly sloping walls descending from the upper edge, the walls merging into a central portion. The central portion has a plurality of concentric calibration lines formed therein enabling to form an opening of a selected size by removing part of the central portion along a selected calibration line. A plurality of vertical fins are provided that radially extend from the central portion to the upper edge. The upper edge is arranged to hold the tray within a frame of the catch basin.

Abstract: A fluid friction controller that includes an outer member having a first friction control surface and an inner member having a second friction control surface. The control surfaces coact to define an elongated orifice that diverges from its entrance toward its exit. The length of the orifice is related to the angle of divergence so that the flow of a fluid passing therethrough remains attached to the control surfaces and the dynamic pressure in the flow does not exceed the static pressure at any point along the length of the orifice.

Abstract: A fluid controller has a disk-shaped body member with a positioning mechanism and lip mechanism. The controller is unitary and when positioned in a fluid flow in a first position enables fluid to flow through an axial bore in the disk-shaped member and around the disk member and in a second position enables fluid flow only through the axial bore.

Abstract: A flow selector device whose fluid flow is regulated by the rotational setting of a rotor body in a housing; and although the metering passageways have outlets spaced from the axis of the rotor and its manipulating shank, other passageways are provided in the housing, which channel the fluid then to an outlet in and concentric with the rotor and its flow-rate adjustment shank. One of those other passageways is an annular groove formed into the rotor's manipulating shank, leading to a radial passageway in the shank, thus carrying fluid to the shank outlet channel regardless of the rotational setting of the rotor. Another of those other passageways is in the housing; and its provision is facilitated by forming it to open onto an outer face-portion of the housing, then sealing the outer portion of the passageways by a ball member forced into the outer end of the passageway. The rotor is held axially of the rotor by a snap ring, and by a nylon ring between the snap ring and the housing.

Abstract: A micro-leakage regulating valve, in which a metal block has a through hole and a tapped hole extending from one side of the metal block and communicating with the through hole at the center thereof. The through hole has inserted therethrough a capillary metal tube. At one end of the through hole a sealing member provides a seal between the outer peripheral surface of the capillary metal tube and a surrounding wall surface of the metal block. An adjusting screw is screwed into the tapped hole, to crush the capillary metal tube to a desired degree, setting a desired flow rate.

Abstract: A closed refrigeration system is provided with a mass flow limiting device located upstream of the suction inlet of a compressor. The device limits the mass flow supplied to the compressor during pulldown and startup to prevent overloading the motor or engine driving the compressor but has minimal influence on the refrigeration system under equilibrium conditions since it is designed for the specific system parameters.

Abstract: A fluid flow control device primarily intended for throttling the flow of liquid refrigerant between two flow rates. The device includes a disc which moves between two distinct positions with a snap action in response to changes in temperature of the refrigerant. The disc is connected at its center to a stem member having an axial bore aligned with and of smaller cross-sectional area than the outlet passage of a flow chamber wherein the disc and stem are positioned. When refrigerant temperature increases to a predetermined level, the disc moves the stem into contact with the chamber wall surrounding the outlet orifice, thereby limiting refrigerant flow to that which passes through the relatively smaller bore of the stem member. When refrigerant temperature drops sufficiently, the disc snaps back to the other position, moving the end of the stem away from the outlet orifice to permit flow at a higher rate.

Abstract: A throttling valve that has an outer ring unit having a plurality of superimposed cylindrical shaped outer throttling rings that define a series of annular passages between the rings. An inner ring unit also having a plurality of superimposed cylindrical shaped inner throttling rings is adapted to movably support the inner rings within the annular passages to establish elongated flow orifices between the adjacent surfaces of the rings. The geometry of each orifice is arranged so that the fluid in transit remains attached to the control surfaces of each orifice and to insure that the static pressure along the length of the orifice remains above the dynamic pressure. The tip region of each orifice is provided with a diverging flow section to further insure quiet performance along the entire length of the orifice.

Abstract: A fluid controller has a disk-shaped body member with a positioning mechanism and lip mechanism. The controller is unitary and when positioned in a fluid flow in a first position enables fluid to flow through an axial bore in the disk-shaped member and around the disk member and in a second position enables fluid flow only through the axial bore.

Abstract: A flow regulator for water or other fluids has a housing with an internal shoulder between its inlet and outlet. The shoulder faces the inlet and slidably supports an elastically deformable annular flow restrictor which cooperates with a centrally located stud to define an annular passage extending from the inlet to the shoulder and followed by an annular portion of the channel between a conically diverging stepped or roughened internal surface of the housing and a stepped or roughened conical external surfaces of a guide member which carries the stud. Deformation, and hence the flow restricting action, of the flow restrictor depends upon the pressure differential which is established by the conveyed fluid.

Abstract: A screened fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a combined screen and flow regulator housing, a regulator within the housing and a cap for sealing the regulator in the housing.

Abstract: A multiple orifice flow measuring device includes a housing having a central passage and a shaft passage located above and parallel to the central passage. The central passage contains a pipe adapted to be connected to a gas flow line. Mounted in the shaft passage is a shaft, on which is rotatably mounted a disk having a plurality of orifices of various diameters spaced circumferentially about the disk and selectively registerable in the flow passage of the pipe. Closely fitting around the pipe against the disk is a piston having a annular recess. A spring located in the central passage between the piston and the end of the housing opposite the disk forces the piston against the disk, thereby maintaining it in position.

Abstract: In an automobile air conditioning system, an improved orifice type expansion device includes a movable piston which supports an orifice tube so that the piston is moved in response to higher than normal condenser pressure towards a stationary plug member so that the resistance to flow is increased and thus a desirable low evaporator pressure and temperature is maintained.

Abstract: A spray head (26) for use with a can (10) containing a liquid (11) exposed to the pressure of a propellant (12). The spray head being disposed on the free end of a dispensing tube (21) of a dispensing valve, especially an aerosol valve (15), and including a spray nozzle (27) in fluid communication (28) with the discharge duct (23) of the dispensing tube (21). The fluid communication (28) includes therein a throttle member (29) with a resiliently biased throttle body (30) which has one side exposed to ambient pressure while the overpressure prevailing in the can interior acts on the other side thereof and through which the flow cross-section (31) can be controlled in dependence on the overpressure in the can such that an approximately constant discharge rate per unit of time through the spray nozzle (27) is achieved until the can (10) is substantially emptied.

Abstract: An inlet nipple and a housing having a water passage extending therethrough that have first, second and third water bore portions of progressively larger diameters in a downstream direction. A variable throttle point is formed by a fixed member and a movable member acting in conjunction with the bore portions that produce a turbulent flow causing cavitation downstream of the throttle point independently of the quantity of flow. In one embodiment the movable member includes a closure portion seatable against a seat formed at the intersection of the bore portion and an annular portion that in conjunction with a bore portion forms an annular water flow space downstream of the closure portion. In the second embodiment the fixed member has a closure portion converging toward an aperture in the movable member which is in the shape of a cup.

Abstract: A flow control for controlling the rate of flow of a fluid through a flow passage over a range of varying line pressures resembles a Belleville washer and is molded from a thermoplastic elastomer having a hardness range from 40 Shore A to 50 Shore D. The control has a circumferential outer rim and a dome-shaped contour within the rim which provides an apex, a concave downstream surface and a convex upstream surface, with the fluid flow passage extending through its apex. This flow control does not require interaction with a specifically designed seat but can simply be mounted across the flow passage which it is to control by retaining its rim portion upstream from the flow passage to be controlled.

Abstract: A toilet refill valve is described for refilling a water closet after each flushing, which produces minimal noise during the refill process. The valve includes a valve device which can open to pass water to a vertical outlet tube that empties into the bottom of the water closet. An anti-siphon air tube near the top of the outlet tube has an upper end open to the atmosphere and a lower end facing downwardly along the outlet tube. A restriction in the outlet tube below the air tube, causes water to fill the outlet tube and at least the bottom of the air tube for a water inlet pressure of at least 20 psi. The water at the bottom of the air tube prevents air from being dragged into the downwardly facing air tube, to avoid the noise that would result from such air flowing through the air tube and bubbling out of the bottom of the outlet tube.

Abstract: A volume governor for flowing media under static pressure formed as a throttle member and including a segmented cone with the angle of cone of about 90.degree. and made of plastics, a bore formed at an open apex is closed with a plug. The plug is made of elastic material with high damping properties. The bottom of the cone is closed with a perforated bottom plate.

Abstract: A surface, subsurface continuous feed moisture maintenance system for microscopic volume irrigation utilizing a preset flow rate valve, provided in a single preset flow rate stage or multiple preset flow rate stages, a moisture actuated sensor valve and a plurality of permeating, moisture distribution tubes. The preset flow rate valves are selected and set according to plant moisture needs in the geographical area being irrigated. The moisture actuated sensor valve gradually opens or closes water flow to the system according to soil moisture level conditions and thus prevents over watering and conserves on water resources. The moisture permeating action of the distribution tubes complement the preset flow rate of the valve and the moisture actuated sensor valve to maintain the subsurface at a constant moisture level.

Abstract: A distinctive apparatus for forming an absorbent body includes a forming chamber, and a fiber delivering mechanism for providing a flow of fibrous material within the forming chamber. A forming layer, which is located in the forming chamber and is movable therein, receives deposit of the fibrous material thereon. A conduit mechanism supplied a flow of dispersed bodies of high-absorbency material, which enter the forming chambers and intermix with the flow of fibrous material thereon. A regulating mechanism controls a velocity of the flow of high-absorbency material into the flow of fibrous material to thereby form a selected distribution of high-absorbency material within the fibrous material deposited onto the forming layer.

Abstract: A pressure modulated flow control valve, particularly adapted for water irrigation applications, comprises an unitary elastomeric pin defining a flow passage therethrough, a sub-chamber formed entirely in the pin and communicating with an inlet to the valve, and a flexible diaphragm separating the sub-chamber from the flow passage. In operation, the diaphragm is exposed to water pressure prevalent in the sub-chamber to flex into and vary the size of the flow passage to control and modulate the flow rate therethrough. The interchangeable pin is mounted in a housing of the control valve to effect a preselected near constant flow rate through the flow passage.

Abstract: An assembly for removing liquid from a pressurized gaseous system, such as condensate from a steam line, contains a rotatable stopper member with a restriction orifice which provides for removal of condensate with only a minor, controlled loss of steam. The orifice can be rotated 180.degree. to the pressure flow, thus allowing the pressure to blow out any trash that becomes lodged on or in the orifice. The stopper member can additionally be rotated so that a larger blow-down port is in the line of flow, thus permitting the removal of trash and excess liquid that may accumulate in the line.

Abstract: A letdown valve for slurries under pressure is provided with a throttle 13 inside a housing 15 with interposed lubricant sealer and grooves 16 to accommodate any excess lubricant sealer. The throttle body 13 is held in place by a retaining ring 17 which is welded in position.

Abstract: An air-conditioning apparatus for adjusting the direction and quantity of air comprises a duct device forming an air passage passing through the duct device, and an airflow adjusting device. The airflow adjusting device is made from a single thin plate and fitted to the duct device across the air passage to adjust a flow of air. Slits of predetermined patterns are formed on the airflow adjusting device to define a plurality of vanes which are integral to the airflow adjusting device.

Abstract: A connector for high pressure fluid conduits, such as fire hoses, has a chamber (10) with an inlet (4) and outlet (6) and between them a resilient ring (18), having an outer diameter close to the width of the chamber, on a dished support (14). The ring has a generally rectangular section except for a chamfer (24) on the inner upstream edge. The support has a central flow passage (16) aligned with the central passage (20) in the ring and carries two intersecting trapezoidal fins (22) projecting through the ring. When connected to a complementary coupling, the inlet and outlet bores of the connector correspond to the diameter of the chamfered portion of the ring. The device controls transient pressure peaks by deformation of the resilient ring without excessive reduction in flow.

Abstract: A fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a flow regulator housing, a regulator within the housing and a cap for sealing the regulator in the housing.

Abstract: A device is provided which provides compensation for alterations in viscosity of liquids dispensed by gravity from containers such as those used in post-mix carbonated beverage dispensing systems. The device has a valve element which collects temporarily the liquid being dispensed and, as a function of the viscosity of the liquid, adjusts the effective size of the discharge opening in the container to compensate for that viscosity.

Abstract: Arrangement for controlling and regulating a liquid (2) flowing through a line (3). The arrangement comprises a valve body (9) provided with a press-on or deforming element (11) moveable along the line and designed to cooperate with the said line for regulating the flow of the liquid (2), by means of restriction thereof to varying degrees. In the line (3) there is fitted a continuous hollow element (4) having a number of openings (8) through which the said liquid can flow. The press-on element (11) moveable along the hollow element (4) is designed to press the line (3) against the said element (4). By this means a shifting of the press-on element can be carried out such that an optional area of the openings can be uncovered for throughflow since that part of the hollow element where the said area is located is situated on the outlet side in relation to the press-on element.

Abstract: A nozzle and a device for the application of the nozzle are disclosed. In the nozzle a mechanism is provided so that the dimensions of the hole for the flow of fluid can be varied according to the pressure differential between the inlet and the outlet. The above can be applied to the making of nozzles and/or devices, the delivery rate of which is directly proportionate to the differential pressure between the inlet and the outlet.

Abstract: A pressure modulated flow control valve, particularly adaptd for water irrigation applications, comprises an unitary elastomeric pin defining at least one flow passage therethrough and a flexible diaphragm overlying the flow passage, adjacent to an inlet to the valve. In operation, the diaphragm is exposed to water pressure prevalent at the inlet to the valve to flex into and vary the size of the passage to control and modulate the flow rate therethrough. In the preferred embodiment of this invention, the diaphragm will function to maintain a micro flow rate through the passage "near constant", e.g., selected from within the approximate overall maximum range of from 2.0 gph to 60.0 gph. The pin in interchangeable in a housing of the control valve to effect the desired near constant flow rate and is particularly adapted for use in pressure modulated drip-irrigation systems wherein water is communicated through the valve to a water distributing device, such as a sprayer or drip-type emitter.

Abstract: An adjustable flow regulating valve has a flexible apertured diaphragm which coacts with a fixed conical needle to provide a gradually variable effective flow controlling orifice area to compensate for changes in a supply fluid pressure. As the supply fluid pressure changes, the aperture of the flexible diaphragm moves relative to the apex of the needle to reduce or increase the effective orifice area which determines the regulative flow rate. The position of the diaphragm aperture relative to the needle is manually adjustable by rotating an adjustment collar on the valve housing to vary the amount of movement of the diaphragm required to engage the aperture with the valve needle. The diaphragm may also be carried by a spring balanced inner sleeve which allows relative sliding movement between the flexible diaphragm and the needle. The amount of force required for engagement is determined by the strength of compression springs at each end of the sliding sleeve set by the adjustment collar.

Abstract: A vacuum venturi device including a bypass valve responsive to an increase in inlet pressure to divert pressurized gas to the low pressure port of the device to effect fast vacuum cut off and blow off.

Abstract: The invention is directed to a valve wherein the valve closure body includes two bracing elements lying in contact engagement with the inner wall surface of the wall casing of a conduit. The two bracing elements are disposed in spaced relationship to each other so that this spacing defines a squeeze zone at which a squeezing pressure can be applied. The squeeze zone has a length which corresponds approximately to the wall spacing within the sleeve. When the elastic wall casing of the conduit is squeezed in the squeeze zone, a portion of the casing deflects to allow passage of a fluid through the conduit.

Abstract: In a flow regulator which is operated by axially compressing the two ends of a resilient cylindrical plug causing the plug to swell and expand outwardly to interrupt flow of natural gas and the like, a stress ring is disclosed. In the preferred embodiment, the stress ring is formed of between eight and 36, preferably being about 24, individual wedge shaped segments having equal angles of inclusion and each segment has a surrounding angled tab segment, the tabs collectively encircling the resilient plug. The tabs form a ring which confines the plug so that radial expansion outwardly and contraction inwardly is accomplished while reducing stress concentration. Moreover, the several segments are all joined to the resilient plug by suitable fastening means such as pins inserted through the segments and into the resilient plug.

Abstract: A screened fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a combined screen and flow restrictor housing and a cap for sealing the restrictor in the housing.

Abstract: Water heating methods and apparatus feed a combustible mixture of gas and air to an axial inlet of a cylindrical radiant surface burner and conduct water to be heated through a heat exchanger encompassing that cylindrical radiant surface burner as a cylindrical structure having first passages for combustion gases therethrough substantially radially of the cylindrical radiant surface burner and the heat exchanger.

Abstract: A combination composed of a conduit for conveying a fluid medium along a linear path under very high pressure and a choke disposed in the conduit, the conduit having an inner wall and the choke being composed of a restrictor having a restrictor opening which is constricted relative to the cross section of the conduit and a movable needle mounted for movement in the direction of the linear path for constricting or closing the restrictor opening. The conduit is made of a material capable of withstanding the high pressures exerted on the inner wall of the conduit by the flowing medium and the choke is made of a very hard and brittle material which is resistant to wear. The choke further includes a central insert member having an outer tubular part fastened to the inner wall of the conduit, an inner part supporting the needle within the conduit so that fluid medium flowing through the conduit flows around the needle, and a member connecting the inner part to the outer part.

Abstract: A lubricator for mixing lubricating oil in air under pressure has a damper serving as a variable restriction mechanism and a support by which the damper is supported, the damper and the support being integrally molded of a flexible material. The damper has a groove defined in the lower end thereof joined to the support. Since the damper and the support are of a unitary structure, their dimensional accuracy is increased and the height of the damper is not subject to variations. Because the damper is made highly flexible by the grooves for easy flexing displacement, the unwanted oscillation of the damper at the maximum air flow rate is avoided, and the damper can supply the lubricating oil at a rate substantially proportional to the air flow rate over the entire range from the minimum air flow rate to the maximum air flow rate. The damper is also improved in durability.

Abstract: A hood structure for air flow measurements on ceiling registers is erected on a fixed square bottom base with an adjustable curtained aperture and mounting for an air flow meter. A hood skirt is stretched by means of four struts that fit against the upper rim to which the skirt is attached (as well as to the base). The rim is made of rigid strips connected together in a ring by securable pivot joints, so that the open top of the hood can have square, round or various elongated shapes for better fitting to a ceiling register or orifice. This enables the use of a smaller bottom frame than would otherwise be necessary for measuring flow out of elongated narrow registers. All but two joints are preferably equipped with pivoted forked braces for securing the angular adjustment of hinged joints connecting angle-bar rim segments by clamping the forked end.