Abstract: An implantable fluid flow control device is assembled in a process wherein a first base is provided having a snap-fit barbed connector which defines a fluid passageway and a spline offset from the barbed connector, and a second base having a connector receptacle which defines another passageway and a spline receiving slot. The barbed connector is inserted into the receptacle, and simultaneously the spline is slidably received within the spline receiving slot in a manner preventing tensile and torsional movement between the bases. The coupled bases are placed in a holding fixture, and brought into close proximity with a heated element to fuse the first and second bases together. A pair of housing bodies are placed over, respectively, the first and second bases such that the bases and the housing bodies cooperatively define a fluid flow path through the flow control device.

Abstract: A back pressure regulator is provided which utilizes laminar flow at all times to minimize degradation of paint which might have metallic particles passing there through. The pressure drop across the regulator is accomplished by utilizing this viscous friction rather than velocity change through an orifice as is common with a conventional pressure regulator.

Abstract: A fuel pressure control valve wherein a pipe press-fit opening 15a is formed on a housing 11 constituting a control valve chamber 16 together with a diaphragm 12, a mounting flange 26 is projectedly provided on the outer surface of this housing 11 and a return pipe 17 is press-fitted into a pipe press-fit opening 15a. A boss portion 33 is expandedly provided at a rear surface of the housing 11, which is opposite to the mounting flange 26, and seat surfaces 32 and 34 for receiving a jig during press-fitting of the return pipe 17 into the pipe press-fit opening are formed at end faces of the mounting flange 26 and the boss portion 37, in a flat plate shape and in a parallel alignment between one end face with the other.

Abstract: The fuel pressure regulator has a new and unique means for integrating the filter screen and axially capturing one of two O-rings seals. A crimp and a shoulder on the outlet tube unite the outlet tube, the housing, and a washer that in one embodiment performs both the function of sandwiching the filter screen between itself and the wall of the housing through which the outlet tube passes and the function of cooperating with the housing in defining the groove which captures one of the two O-ring seals. The invention offers meaningful improvements in both manufacturing and cost.

Abstract: A fuel pressure regulator has one or more fuel-injector-receiving sockets directly attached to the cylindrical sidewall of its housing such that pressurized fuel in the fuel chamber portion of the housing flows directly into the socket(s).

Abstract: In a supercharged pressure control valve apparatus of an internal combustion engine, a housing of supercharger has first and second by-pass air paths; a valve sheet formed on an end of the second by-pass air path; a rubber diaphragm having thick sealing part of convex and concave sectional shape at its outer periphery; a valve disc fixed to the moving part of the diaphragm and opening closing the first and the second by-pass air paths responding to movement of the diaphragm; and a casing of the valve directly fixed on the housing by sandwiching the outer periphery of the diaphragm.

Abstract: A check valve for use in a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. The check valve is in fluid communication with a positive displacement pump and with fluid reservoir. The check valve includes a housing for securing check valve elements adjacent a plate having an inlet and an outlet. The check valve includes a diaphragm positioned to seal or to open fluid communication between a check valve inlet and a check valve outlet. A fluid by-pass is provided for passage of a pressurizing fluid around the check valve into the fluid reservoir.

Abstract: An injector for a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. The injector is in fluid communication with a positive displacement pump which accepts fluid from a fluid source. The injector includes a spring loaded plunger, an end of which contacts a diaphragm adapted to seal an injector inlet from an injector outlet. The end of the plunger is shaped to seat the diaphragm against the injector outlet and to position the diaphragm away from the injector inlet.

Abstract: The disclosed valve may be configured for use as a pressure relief valve, pressure regulator valve or pressure reducing valve. A pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member comprises a substantially pressure balanced piston, the axial movements of which control flow through the valve. A pilot valve for relieving pressure above the piston has its inlet positioned within a cavity formed on the upper surface of the piston.In a second disclosed valve, a pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member is mounted on a stem having an upper end which is urged upwardly by a spring disposed around the stem.

Abstract: A combination fuel pressure regulator and fuel filter apparatus for vehicle fuel systems has a fuel supply tank with a fuel pump therein for puming fuel to a fuel supply rail having fuel injectors attached thereto. A fuel filter is operably disposed between an inlet supply tube and a fluid outlet tube for filtering impurities from fuel passing therethrough. A valve in fluid communication with the inlet supply tube is provided with a regulator for causing flow to be short circuited back into the fuel supply tank when the pressure in the fluid outlet exceeds a predetermined level. The valve is biased to a closed position and will remain closed as long as the pressure on the clean side of the filter is below the predetermined pressure whereby all of the fuel in the inlet supply tube will pass through the filter.

Abstract: A fuel pressure regulator valve comprises a housing constructed from plural metal stampings and containing a diaphragm assembly which divides the housing into a control chamber and a fuel chamber. The housing is shaped to contain integral grooves for O-ring seals so that the O-rings stay on the valve when it is removed from its mounting socket in a fuel rail. Two of the stampings partially define the fuel chamber and are joined by means of a crimp formed in one. The other of the two has a hardness greater than that of the one to facilitate its press-fit engagement with the valve seat tube. The crimp is below the upper O-ring seal so that the crimp provides an entirely satisfactory joint. Each O-ring is located within its groove with the aid of a spacer also disposed in the groove.

Abstract: A device for limiting the applied vacuum in a fluid suctioning system comprising a chamber having an inlet at which a suction level or levels V.sub.x is or are to be maintained, and an outlet to which vacuum level V.sub.2 is applied, wherein V.sub.x <V.sub.2, fluid being sucked through the shapes via the inlet and outlet; an annular seat in the chamber, the chamber containing an upstream flow zone R.sub.1 between the inlet and the seat, and a downstream flow zone R.sub.2 between the seat and the outlet; and a diaphragm at the upstream side of the seat and extending crosswise thereof and crosswise of at least a portion of the zone R.sub.1, the diaphragm carried for movement toward the seat when the vacuum level in R.sub.1 rises to a predetermined level, to reduce or block fluid flow through the chamber, the diaphragm movable away from the seat when the vacuum level in R.sub.1 falls below a predetermined level.

Abstract: An air flow/check valve for an exhaust emission system combines flow and check functions into a single valve which is especially well-suited for use with an electric motor driven air pump. The valving mechanism is operated by a fluid actuator, and pressure conditions in the actuator are controlled by sensing the pressure differential across the valving mechanism to close the valving mechanism when exhaust back pressure is indicative of causing potentially damaging backflow to the air pump. Several embodiments of the invention are disclosed.

Abstract: A pressure control valve suitable for liquid or gaseous media with a short force conduction path is to be created, permiting the use of plastic as a material for the housing. The pressure control valve has a chamber carrying the medium, which is formed by a housing element and a diaphragm. A seat valve located in the chamber has a valve closing element secured to the diaphragm. A prestressed spring disposed in the chamber at least indirectly engages the housing part on one side and the valve closing element on the other. The spring acting as a tension spring is in the form of an annular washer and occupies little space. The pressure control valve is intended for liquid or gaseous media, and in particular for use in fuel injection systems of internal combustion engines.

Abstract: A control valve for limiting the passage of water between a water source and a hot water tank within an automatic control system for water heaters. The control valve contains a sensing means for determining pressure differentials between the hot water tank, the water source and the delivery system. A rod is secured within the control valve housing for limiting the movement of the sensing means when the hot water heater ruptures of leaks. The sensing means also includes a valve seat which acts to control the entrance of water from the water source into the hot water tank. The valve seat defines a leak path which prevents water pressure loss in the hot water tank during a water cooling cycle.

Abstract: A valve seat for a valve used with a treater tank comprising a body having a generally cylindrical bore threthrough, the body having a first end, a second end and being made of metal, the first end having a counterbore concentric with the cylindrical bore, the body having means on the second end for mounting the valve seat in the valve and an insert carried by the body and received in the first end, the insert being comprised of an erosion-resistant synthetic polymeric material having a cylindrical passageway therethrough, the insert having a first portion defining first inner and outer concentric cylindrical surfaces, the first outer surface having a diameter greater than the diameter of the counterbore, an annular sealing surface being formed on the first portion, and a second, generally cylindrical portion, said second portion being received in the counterbore and means disposed between the body and the second portion to secure the insert to the body and effect fluid-tight sealing between said insert and s

Abstract: The device comprises a housing formed by a cup-shaped body and a bell-shaped cover secured to the body, a deformable membrane secured to the housing and forming, together with the body, a chamber for the fuel, a movable shutter member designed to bring the chamber into communication with an outlet opening; the device is characterized in that at least one hole is provided in the base wall of the body for the inlet of the fuel into the chamber and a bearing seat for a sealing ring arranged so that it can be interposed between the seat and a corresponding seat of a housing in which the lateral wall of the body is inserted is provided on the lateral wall of the body.

Abstract: A pressure regulator device which enables greater coaxiality tolerances in the individual parts, without impairing the ability to assemble the parts or impairing a necessary tight sealing. The pressure regulator valve is disposed in a guide opening of a fuel distributor line and a receiving opening of an outlet connection. The pressure regulator valve has a bottom part and an outlet neck. An annular neck groove is embodied on the outlet neck and an annular housing groove is embodied on the bottom part. A sealing ring is disposed in each groove. The annular neck groove is defined by an outer shoulder and an inner shoulder, which has a smaller diameter than the outer shoulder. In the same way, the annular housing groove is defined by an outer shoulder and an inner shoulder, which has a smaller diameter than the outer shoulder. The outer shoulders of each groove allow centering of the pressure regulator valve while the inner shoulders allow concentricity errors.

Abstract: A solar powered water heating system including an atmospherically sealed regulating valve (40) initially opening to pass fluid at a minimum selected pressure and remaining open to pass fluid until the fluid pressure reaches a selected reduced pressure including a housing (41), a valve housing cap (42) enclosing the open end of the housing, a valve element (60) movable axially of the housing, a first chamber (47) in the housing axially of the valve element in one direction, a second chamber (58) in the housing axially of the valve element in the other direction, a bore (70, 83) extending through the valve element connecting the first chamber and the second chamber, a fluid inlet passage (45) supplying fluid to the first and second chambers, a third chamber (51) in the housing communicating with fluid outlet passages, and a biasing element (85) permitting movement of the valve element for fluid communication between the first chamber and the third chamber at the minimum selected pressure in the fluid inlet pass

Abstract: A vacuum supply system for a brake power assist unit of a motor vehicle with at least one additional vacuum consuming device is achieved by the installation of a valve, which can be switched as a function of existing vacuum level in a pipe leading from the vacuum generating device to the at least one additional consuming device. Switching of the valve causes a throttling of this pipe to be more extensive when the existing vacuum level is above a certain absolute pressure value.

Abstract: A shut off valve is disclosed including a valve body having a controlled fluid flow passage and a stepped bore intersecting the control fluid flow passage and a valve cap threadedly attached to the valve body and including a supply fluid flow passage. A valve is provided in the bore in the valve body which is responsive to differential pressure between the pressure in the controlled fluid flow passage and the supply fluid flow passage to close the supply fluid flow passage at a predetermined differential pressure.

Abstract: A vacuum supply system for a brake power assist unit of a motor vehicle and at least one additional vacuum consuming device, is achieved by a parallel arrangement of two pipes leading from a vacuum generating device one to the brake power assist unit and one to the additional consuming device. Both pipes are equipped with flow control devices one of which is blockable by means of a check valve with an increased restoring or closing force for securing a vacuum supply priority for the brake power assist unit.

Abstract: A surge reliever relief valve is provided in which a flexible membrane is maintained in a peripherally sealed relationship across a rigid grid. The grid bounds the laterally adjacent intake and output regions of the valve. Intake pressure extends the membrane allowing flow between intake and output. Extension of the membrane is limited by a retainer. Extension may be elastic or inelastic.

Abstract: A fuel pressure control valve device comprising: a case; a fuel introducing port and a fuel discharge port; a diaphragm dividing the interior of the case into two chambers; an armature; a resilient member; a pole constituting a fuel passage for discharging fuel; and a sphere as a valve body for opening or closing the fuel passage in the pole. The fuel passage in the pole includes: a fuel passage for guiding the sphere; a valve seat to be abutted against the sphere; and a resilient member for giving a biasing force to the sphere to abut the sphere against the armature. Auxiliary fuel passages are formed in or on the wall of the fuel passage for guiding the sphere. A spring seat is provided at the outer peripheral portion thereof with a stepped portion which receives a coil spring.

Abstract: A fuel pressure regulator valve of the type commonly used in automobile fuel injection systems. The invention relates to improved retention of the valve element within the mount that is carried by the diaphragm assembly. The valve element is a truncated sphere and the retention is by means of a circular washer that fits into a circular recess formed in the mount around the cavity that contains the sphere. The truncated circular face of the sphere protrudes through the washer so that it can coact with the valve seat. The inside diameter of the washer is closely controlled and this controls the allowable travel of the sphere within the cavity. The washer is retained on the mount by crimping the edge of the circular recess over the outside diameter of the washer.

Abstract: Disclosed is a control device for use in fluid systems. In one embodiment the fluid is a liquid. A substantially cylindrical housing has therein a symmetrical cavity. The cavity is divided in upper and lower chambers by a circular and planar diaphragm. The upper chamber housing wall has protruding therefrom a cylindrical boss having a port for admitting a liquid. The boss forms a valve seat. The diaphragm has a plurality of concentric corrugations surrounding a central planar integral valve member. A media port in the lower chamber housing admits media for putting pressure on the diaphragm. When the pressure exceeds a predetermined value, the valve member closes upon the seat and entraps liquid between the diaphragm and upper chamber housing. The liquid acts to cushion, conforming to the shape of the diaphragm, thereby preventing damage to the diaphragm.

Abstract: A control arrangement for a gas-fired system. Three diaphragm-operated valves are in series providing a stage operation. The valves are pilot controlled. A booster pump is provided for cooperation with the pilot valves to boost the line pressure to the first of the valves, the boosted pressure being sufficient to operate the diaphragm valves, and the boosted pressure being controlled by the pilot valves. The booster pump operates only when needed. Diaphragm-operated pilot valves means are provided which operate two separate pilot valves which control the pressure on the opposite sides of the diaphragm of the diaphragm valves. The system provides stage operation, the stages including a first stage which is closing of a vent valve connected between disphragm control valves, opening of a first diaphragm valve, and a third stage which is a controlled slow opening of the second diaphragm control valve. The first diaphragm valve is both a control valve and a pressure regulator.

Abstract: A fuel pressure regulator comprising a housing, a movable diaphragm mounted within the housing, the diaphragm including a first side communicating with the atmosphere and an opposite second side having first and second portions, a fuel chamber partially defined by the first portion of the second side of the diaphragm, a constant pressure chamber partially defined by the second portion of the second side of the diaphragm, a fuel inlet communicating with the fuel chamber, and a fuel outlet having an inlet end located adjacent the diaphragm within the fuel chamber and being selectively communicable with the fuel chamber in response to movement of the diaphragm relative to the inlet end.

Abstract: The disclosed valve may be configured for use as a pressure relief valve, pressure regulator valve or pressure reducing valve. A pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member comprises a substantially pressure balanced piston, the axial movements of which control flow through the valve. A pilot valve for relieving pressure above the piston has its inlet positioned within a cavity formed on the upper surface of the piston. In a second disclosed valve, a pair of opposed valve members defines a radial flow path therebetween which extends from the outer radial peripheries of each valve member to an axial bore formed in one of the valve members. The other valve member is mounted on a stem having an upper end which is urged upwardly by a spring disposed around the stem.

Abstract: A pressure responsive diaphragm valve, particularly suitable for a respiration responsive valve for a respirator mask. The whole of the valve assembly body is constituted by the mutually laminated layer members and assembled by simply tightening the layer members together. All of the layer members can be made by molding, without machining.

Abstract: A device is provided for regulating the pressure of a liquid flow. The device includes two housing portions having open ends in mating engagement between which a flexible membrane, which hermetically seals the open ends, is maintained. Thus, one of the housing portions defines a first chamber into and through which the liquid to be regulated flows and the other defines a second chamber into which regulating fluid is provided. A two-portion guided elongated pin, movable in a reciprocal manner along its longitudinal axis, extends from an outlet orifice of the first chamber to a linearly aligned second chamber bore. The two portions of the pin converge at the membrane and are coupled by a male-female coupling and grip the membrane. In operation of the device, the pin, which has a hollowed portion abutting the outlet orifice, is moved by reason of pressure effected on active surfaces of the membrane and opens and closes the outlet orifice.

Abstract: In known pressure regulating apparatus, the pressure regulating valve placed in a holder is provided with a plunge-cut sealing groove for receiving a sealing ring. A filter is also disposed inside the pressure regulating valve. The novel embodiment of the pressure regulating apparatus is intended to make it easier to embody and install the seal between the holder and the pressure regulating valve. To avoid a plunge cut on the bottom part of the valve housing of the pressure regulating valve, the bottom part is provided with a step, defining one side of a sealing groove, while the sealing groove bottom is formed by a restriction extending as far as one end face of the bottom part. The sealing ring is defined on the other side by a ring, which is placed upon the restriction, and being connected with a filter disk extending radially inward and serves as a retaining means for the filter disk.

Abstract: An improved wheel end valve assembly (11A) for a central tire inflation system (10) having a single connection (68) to a tire chamber (74) and a single supply connection (62) to a source ( 142) of pressurized fluid, which requires no venting other than through the single supply connection (62), is effective in response to pressurization and venting of the single supply connection (62) to open and close communication to the tire chamber (74), and which is not affected by ambient temperature changes nor susceptible to leakage into and out of a trapped air volume employed by prior art valve (11) disclosed herein. The valve (11A) is actuated by air pressure and is resiliently biased into closed position by a spring (342) positioned within an evacuated bellows (334).

Abstract: A cassette containing a group of sealed cells is used as a means for delivering doses of fluid to be injected into a sterilizing chamber. After the cassette is automatically positioned over a piercing mechanism, the cassette is moved downwardly so that a cell is pierced. Fluid is then forced out of the cell by pneumatic pressure into an injector valve, which opens in a manner which does not adversely affect a vacuum within the chamber.

Abstract: A compensating valve and a drainage system for draining a body fluid from one body region to another body region. The system enables routine drainage at predetermined differential pressures, provides for pumping action, for flushing action to clear the system of obstructive material, and for resisting over-drainage which can occur when the patient makes an abrupt and relatively large change in his position. A compensating valve purpose has a valving action which is proportional to various parameters so as to enable continuous and proportional control for drainage rather than an on/off control.

Abstract: A pillar tap has a main water chamber and a control chamber housed within the main chamber. The control chamber has two different sized openings. The smaller opening which is located opposite the main outlet valve seat of the main chamber supports a membrane. The membrane in turn supports a valve member for movement into and out of engagement with the valve seat. The larger of the two openings is closed by a resilient diaphragm. A pair of control valves and control the admission and release of water to and from the control chamber. By controlling the control valves and the pressure differential between the main and control chambers and can be varied and so used to control the degree to which the valve member is opened. Once the flow rate through valve seat has been set, the diaphragm responds to pressure variations in the main chamber to alter the position of the valve member in a sense to maintain a substantially constant flow rate irrespective of the pressure variations.

Abstract: A back pressure regulator of the diaphragm type. A metal diaphragm is held in a cavity formed by opposed faces of top and bottom portions of the unit. The opposed faces are tapered so that the depth of the cavity is greatest in the central portion of the diaphragm, allowing for movement of the diaphragm. A fluid outlet leading into the cavity at the underside of the diaphragm is sealed by contact of the underside of the diaphragm with an O-ring which surrounds the fluid outlet and extends into the cavity. When the pressure of the fluid in the cavity above the diaphragm is greater than the pressure of the fluid beneath the diaphragm the diaphragm is maintained in contact with the O-ring to prevent flow through the outlet.

Abstract: A regulating mechanism for maintaining a preselected pressure within the fuel rail portion of a fuel injection system of an internal combustion engine. The regulator has a cannister with a hollow interior which is divided into a biasing chamber and a fuel chamber by a diaphragm assembly. The diaphragm assembly includes a molded diaphragm having a centrally located socket containing a truncated spherical ball. Centrally disposed coaxial tubular members define concentric fuel inlet and outlet passageways communicating with the interior of the fuel chamber. The inner tubular member defines the fuel outlet passageway and has a valve seat which is normally closed by the truncated surface of the spherical ball, subject to being opened by excessive fuel pressure against the fuel chamber side of the diaphragm.

Abstract: A valve comprising a first chamber on its control or operating side, and a second chamber on its fluid side, which chambers are separated from one another by means of an uninterrupted diaphragm. The control-side chamber has a fluid outlet which is opened and closed, by means of a valve needle. The valve needle bears with its base on the uninterrupted diaphragm via a disc of a friction-reducing material such as polytetrafluoroethylene.

Abstract: A subcutaneously implantable siphon control device is provided for use in a physiological shunt system including a proximal catheter, a flow control valve and a distal catheter. The siphon control device limits fluid flow through the shunt system due to the siphoning effect of hydrostatic pressure created by the elevation of the proximal catheter inlet with respect to the distal catheter outlet. The siphon control device includes, generally, a base having an inlet typically placed in fluid communication with an outlet of the flow control valve, and an outlet typically placed in fluid communication with the distal catheter, and a housing for the base which, in connection with the base, defines a fluid flow pathway between the inlet and the outlet. The base provides a wall having substantially parallel upper and lower seating surfaces, which separates the inlet from the outlet.

Abstract: A slow opening and fast closing gas valve includes a valve seat and a valve closure member arranged to respond to a gas pressure to seal aganst the valve seat to close the valve to an input gas flow therethrough. In order to open the valve, the gas exerting the gas pressure for sealing the valve closure member against the valve seat is allowed to bleed-off through a fixed restriction while the input gas is allowed to urge the valve closure member away from the valve seat to provide a slow opening of the input gas flow path through the valve. In order to close the input gas path through the valve, the input gas pressure is applied to the valve closure member to assist a closure spring in urging the valve closure member against the valve seat to produce a fast closure of the valve. A second valve is arranged to selectively control the flow path of the gas being bled off from the valve closure member to provide an unrestricted flow path or a restricted flow path through the fixed restriction.

Abstract: A pressure regulator for regulating a pressure differential between a fuel pressure and an intake manifold vacuum, which includes a casing member, a diaphragm dividing the casing member into a vacuum chamber and a fuel pressure chamber, a valve member associated with the diaphragm, and a spring biasing the diaphragm and constructed of a material having a temperature-actuated shape memory alloy.

Abstract: An injection nozzle for injecting fuel into the combustion chamber of an air-compressing internal combustion engine is provided, having a valve closing member which lifts inwards from its valve seat as a function of the fuel pressure. The valve closing member is formed by a diaphragm which is firmly clamped in the nozzle body and lifts to a greater extent during the opening pressure of the injected fuel in the direction of the spray openings. A dilatant liquid or a non-dilatant liquid with a certain portion of gas is used as a closing spring for the diaphragm.

Abstract: A bidirectional pump has a chamber in communication both with a drain conduit and a conduit for delivering washing liquid into a wash chamber. The drain conduit has a port communicating between the pump chamber and a drain outlet. An opening communicates between the delivery and drain conduits and is selectively sealed by a deformable diaphragm. With the pump rotating in a first direction and the liquid being delivered principally through the delivery conduit by the pump, a pressure differential is established across the diaphragm thereby urging a portion of the diaphragm sealingly against the port to prevent delivery of washing liquid through the drain conduit as during a rinsing cycle of the dishwasher. Reverse rotation of the pump reverses the pressure balance to urge the sealing portion of the diaphragm away from the drain port, thereby permitting flow through the drain conduit for suitable disposal of the used washing liquid.

Abstract: A container for gasoline or other liquids is provided with a hollow body portion equipped with a pouring spout. A manually actuated valve mechanism plugs or unplugs the pouring spout by the axial displacement of a control rod which extends through both the pouring spout and the container body. The plug and control rod being biased towards a closed position and displaceable to a locked open position. In the locked open position the interior of the hollow body portion is vented via a vent tube, ventable to either the upper or lower portions of the container. The air admission system including a pair of pressure-actuated valves disposed respectively in the upper and lower portions of the vent tube and each operable to admit air to the container only when it is not submerged in the container contents. Thus, the flow of fluid will be continuous whether the container is upright or inverted.

Abstract: The valve of a liquid fuel pressure regulator comprises a two-part construction consisting of a spherically contoured element and a stem. The spherically contoured element serves to swivelly mount the valve on the movable wall which carries the valve. The spherically contoured element comprises a hole which is on a radial to the center of the element. The shank of the stem is press-fitted to this hole to dispose the stem's flat circular head toward a seat with which the valve coacts as the pressure regulator operates. The swivel mounting compensates for misalignment and out-of-squareness of the valve travel relative to the seat and enables the head to close flat against the seat. Two embodiments are disclosed. In one, the spherically contoured element is a sphere and the hole is a blind hole drilled into the sphere. In the other, the spherically contoured element is a truncated sphere and the hole is a through-hole.

Abstract: A fuel pressure regulator comprising a housing, a diaphragm dividing the housing into a first chamber and second chamber, a passage from the exterior of the housing to the first chamber, an inlet and an outlet associated with the second chamber of the housing, and a valve seat associated with the outlet. A carrier is mounted on and movable with the diaphragm and a first spring within the first chamber yieldingly urges the carrier toward the valve seat. The carrier supports a plate that has an opening therein. A valve has a hollow tubular closed end portion that projects through the opening in the plate for engagement with the valve seat and a peripheral portion that retains the valve between the carrier and the plate. A second spring is interposed between the carrier and extends into the tubular portion of the valve to yieldingly urge the valve toward the valve seat and permit relative movement between the valve and the valve seat.

Abstract: A fluid supply apparatus includes a pressure reducing valve. The inlet passageway of the valve is connectable to a first fluid supply and the outlet passageway of the valve is connectable to a fluid user capable of generating a subatmospheric pressure. The actuator of the valve biases the valve to a closed position. A pressure sensing line communicates the pressure from the outlet passageway of the valve to the actuator in opposition to bias of the actuator. The presence of a subatmospheric pressure at the outlet passageway of the valve will move the actuator and valve towards the open position allowing fluid to flow from the first fluid supply to the fluid user with the valve reducing the non-subatmospheric pressure of the fluid in the first fluid supply to the sub-atmospheric pressure of the outlet passageway. A flow dividing vane is provided in the valve between the orifice of the valve and the outlet passageway in order to minimize pressure fluctuations in the outlet passageway.

Abstract: A regulator is provided for controlling the degree of suction within a collection chamber in a drainage device. The regulator includes a means for measuring the degree of negativity within the chamber and a feedback passageway leading from the measuring means to the suction source. When the measuring means detects a degree of negativity which is equal to or greater than a predetermined value in relation to the available suction the feedback passageway is opened to atmosphere and when the degree of negativity becomes less than the predetermined value the feedback passageway is closed so as to impose the full suction of the suction source upon the chamber.

Abstract: An implantable valve for allowing the passage of cerebrospinal fluid (CSF) from a ventricle of the brain of a patient to a suitable drainage location in the body of the patient includes a movable diaphragm having one of its sides in contact with dura mater and its other side in pressure communication with the drainage location. A valve assembly, actuated by movement of the diaphragm in response to increased epidural pressure, controls passage of CSF from the ventricle to the drainage location.