Abstract: A valve system, especially for use in a veterinary syringe, comprises a valve body which is arranged in a valve space formed between a first part having a valve seat and a second part which presses the valve body against the valve seat under influence of spring force. The valve body has, in an area adjacent to the valve seat, projections which are directed radially outwardly. The valve space has, at a bore hole surface, a projection directed radially inwardly and having an inner diameter. The projections of the valve body which are directed outwardly are arranged between the valve seat and the inwardly directed projection of the valve space. The projections of the valve body and the inwardly directed projection of the valve space are constructed elastically. The inner diameter formed by the projection of the valve space is smaller than an outer diameter formed by the projections of the valve body.

Abstract: Flow controls that can be inserted in a liquid-supply line or in the accommodating bore of a plumbing fitting. The controls have an essentially cup-shaped mount with perforations through its bottom and a disk of resilient material fits into the perforations. At least the edge of the side of the disk facing the bottom of the cup has a conical bevel of 1.degree. to 5.degree. to the midplane of the disk and narrow ribs and/or sector-shaped webs that extend out essential radially at a prescribed angle around a prescribed circumferential angle.

Abstract: A dual-stream filling system is used in a packaging machine to introduce at least two flowable materials into a container. The dual-stream filling system defines a material flow path therethrough. The system includes a primary filling tube having an inlet end and a discharge end and defining a primary filling tube internal flow region. A secondary filling tube has an inlet end and an outlet end and defines a secondary filling tube internal flow region. The secondary filling tube is positioned at least in part within the primary filling tube internal flow region, penetrating the primary filling tube through the first opening.

Abstract: A dual-stream filling system is used in a packaging machine to introduce at least two flowable materials into a container. The dual-stream filling system defines a material flow path therethrough. The system includes a primary filling tube having an inlet end and a discharge end and defining a primary filling tube internal flow region. A secondary filling tube has an inlet end and an outlet end and defines a secondary filling tube internal flow region. The secondary filling tube is positioned at least in part within the primary filling tube internal flow region, penetrating the primary filling tube through the first opening.

Abstract: A poppet check valve (20) in the embodiment of FIG. 1 has a valve body (30) with a fixed unyielding metal seat (38) for engaging in metal-to-metal sealing contact with a sealing surface (48) on poppet valve member (34) at relatively high fluid pressure ranges. The metal seats 38 and 48 may both be frusto-conical in shape or one frusto-conical and the other spherical. A compliant metal sealing member (42) engages sealing surface (48) in metal-to-metal sealing relation at low fluid pressures prior to engagement of sealing surface (48) with fixed metal seat (38) at high fluid pressures. Alternative embodiments are shown in FIGS. 3-7. The embodiment of FIG. 7 shows a poppet check valve with a pair of staged flexible metal sealing members (42D, 43D) which are integral with body (30D) for progressively engaging the sealing surface (48D) of poppet valve member (34D) prior to engagement of fixed metal seat (38D).

Abstract: A disposable device for controlling the rate of suction to and from a bodily organ, such as the stomach, during a lavage procedure that involves the use of a movable controller that slides back and forth over an opening in the main body of the device. The interior opening of the device which is placed in a flowline that extends from the stomach upstream to a downstream collection vessel has a tapered flow path that allows for the uninterrupted flow of pill fragments or stomach contents through the flowline. A lateral flow path that extends from an opening in the exterior of the main body to the main flow path enables an operator to vary the suction pressure to or from the patient by varying the size of the exterior opening through the use of the movable controller.

Abstract: A check valve using a valve element (2) which is so constructed that the valve element comprises three members: a cover (4); an annular packing (5) and a pressing plate (6), the pressing plate (6) is provided with a snap fit claw (7), a flexible flange (12) pressed to the peripheral edge of a valve seat (11) when the valve element (2) is put in the valve closing state is formed on the outer periphery of the annular packing (5), a peripheral stepped part (13) to which the outer periphery of the pressing plate (6) is fitted is formed on the inner periphery thereof, the cover (4) is provided with a fitting hole (8) for the snap fit claw (7) and a peripheral wall (14) formed on the outer periphery thereof, to which the main body part of the annular packing (5) except the flange (12) is fitted, the annular packing (5) is fitted to the cover (4), the pressing plate (6) is fitted to the annular packing (5), and the snap fit claw (7) is fitted in the fitting hole (8), thereby clamping the annular packing (5) with the

Abstract: An improved reed valve assembly for a compressor (10) includes a substantially annular reed tip support seat (36) which nonconcentrically surrounds a round discharge port (32). The radial width of the support seat (36) varies continually from a greatest width nearest the distal edge of the reed tip (24') to a least width diametrically opposed thereto. The greatest width is sufficient to support the reed tip (24') in the area where it needs the greatest support, but is narrower everywhere else, so as to reduce contact area, noise and opening resistance.

Abstract: A piezo valve arrangement for gas mixers or respirators, which is built up modularly from individual valve elements. At least one individual valve element, which is provided in its housing with a pressurized gas channel and a gas discharge channel, is arranged between a connection plate with a pressurized gas connection and a gas discharge connection, on the one hand, and a closing plate, on the other hand, wherein the direction of the gas flow in each valve element is from the pressurized gas channel via a metering screw, a metering channel, and a piezo vibrating element held freely vibrating on one side with a seal to the gas discharge channel.

Abstract: A duckbill valve is provided based on a valve seal with a hollow cylindrical body with first and second ends, the first end having an open mouth, the second end having a closable mouth circumscribed by a pair of crescent shaped lips. One of the lips has a thinner width than the other. The cylindrical body flares outward in the direction from the first end towards the second end. In another aspect, the cylindrical body includes a posterior and an anterior section adjacent the respective first and second ends, the anterior section having an outer wall portion curvilinearly tapering toward the thinner lip. Valves of the present invention are particularly suitable for controlling flow of semi-solid substances because the mouth of the duckbill can open to a relatively large extent, the latter being off-center within a round collar fitting.

Abstract: Fitting, especially for a continuous flow water heater.The submitted invention takes as its basis the problem of developing a fitting of the named type by which the formation of calcareous deposits on the rod protruding from the water control housing is lessened and the influence of such calcareous deposits on the controller action is completely eliminated.The problem is solved in that within water control housing (2), the control motion of membrane (24) is transmitted to a lever (3) whose center of rotation forms a shaft (4), rigidly connected to this lever (3) and whose pivot is sealed, leading to the exterior of water control housing (2). At the same time, shaft (4) is also the center of rotation for a second lever (5) which is likewise rigidly connected to it.

Abstract: A check valve 10 for a fluid passageway 12 or 14 of a pressure balancer 16 or the like, and having a base plate 40 with an opening 62 therethrough connected in the passageway 12 or 14. The underside 42 of the base plate 40 disposed in the passageway 12 or 14 to face normal flow therein and the upperside 44 facing the opposite direction. A substantially "U" shaped frame member 79 is connected on the upperside 44 of the base plate 40. The frame member 79 carries two leg members 52 and 54 extending from the upperside 44 of the base plate 40 on opposite sides of the opening 62 with a bridge member 72 carried by the leg members 52 and 54 to span the opening 62. A closure member 92 is disposed on the upperside 44 of the base plate 40 adjacent the opening 62. A spring member 80 is connected between the frame member 79 and the closure member 92 normally to urge the closure member 92 to close the opening 62 whenever the flow in the passageway 12 or 14 is less than 5 psi.

Abstract: A pressure-based mass flow controller suitable for accurately monitoring and controlling the flow of many types of precursors characterized by vapor pressures ranging from approximately 2 torr or lower to at least 760 torr or higher at delivery temperatures of up to at least 250 degrees C. or higher for flow rates ranging from molecular to sonic. A flow restrictive element is installed in the precursor flow path, and the pressures of the fluid upstream and downstream of the flow restrictive element are measured. The ratio of the upstream and downstream fluid pressures is computed and compared to a value stored in the memory of a CPU associated with the controller to determine whether the flow is choked or non-choked. The mass flow of the precursor fluid is then computed by the CPU in accordance with a linear function of the upstream pressure, for choked flow, and in accordance with a nonlinear function of both the upstream and downstream pressures, for non-choked flow.

Abstract: An in line fluid pressure regulating and pressure relief device having a regulator body with an axial bore therethrough with an inlet chamber conectable to a source of fluid under pressure and an outlet chamber connect able to a device requiring fluid under substantially constant pressure. A fluid pressure regulator located in the regulator body maintains fluid pressure at the outlet chamber at a constant predetermined level. A bleed piston located in the axial bore between the inlet chamber and to the pressure regulating means loses contact with said pressure regulating piston when the pressurized fluid source is removed from the regulator or drops below a certain level relieving substantially all pressure in said exit chamber and any attached device passively rendering the device inoperable.

Abstract: An oil pressure supply valve for a traction control system, the structure of which is simple and small in size, that improves the function of the traction control system by securing enough flowing volume of the brake oil. The oil pressure supply valve includes: a body; internal passages connecting a master cylinder connection passage and a pump inlet connection passage that are formed perpendicular to each other in the body; a valve operating member including a valve seat for opening and closing the internal passages; a valve element having a ball valve which contacts or separates from the valve seat; a fixing screw member which is integrally formed with the valve element; and a spring supporting the valve operating member. Also, in the fixing screw member is formed an air passage through which air passes when the valve operating member moves up and down.

Abstract: A pressure relief or back pressure valve has a valve body with a tubular outlet member having an outlet surrounded by an end face and an annular inlet chamber surrounding the outlet member. The annular inlet chamber has an outer periphery defined by a wall member with an end face in a plane spaced away from a plane defined by the end face of the outlet member. A flexible diaphragm has an outer peripheral edge portion clamped between the end face of the wall member and a clamping member, the flexible diaphragm in an undeflected configuration having a central portion spaced from the end surface of the outlet member. A resilient force applying device is operable to apply a predetermined force to the diaphragm to cause the diaphragm to be deflected into engagement with the end face of the outlet member, and a release device is operable to remove the force from the diaphragm to permit the diaphragm to move away from the end face of the outlet member.

Abstract: A pressure relief valve for releasing fluid through a vent in a railway tank car, tank trucks and similar vessels. A valve disk is normally biased in a closed position by a plurality of constant-force springs of laminated steel tapes on drums supported on upright angle brackets symmetrically arranged around a valve seat. The pressure at which the valve opens is determined by a preselection of the number of springs, laminated tapes per spring, and the restoring force of each tape.

Abstract: A check valve assembly mounted for engagement with a valve seat includes a flapper valve and a lever arm. The flapper valve includes a bracket pivotably mounted along a first hemisphere of the valve seat, a valve plate mounted to the bracket along a region generally spaced from a periphery of the valve plate, and a mounting assembly adjustably joining the valve plate to the bracket. The flapper valve has a closed position with the valve plate in sealing engagement with the valve seat about the periphery of the valve plate. The lever arm is pivotably mounted to the valve seat along a second hemisphere of the valve seat opposite the first hemisphere. The lever arm includes a lever surface disposed for moving contact with an engagement surface of the bracket and a biasing means for biasing the lever surface toward contact with the engagement surface.

Abstract: A corrosion resistant check valve having plastic components in the fluid path is provided. The check valve broadly comprises an inlet housing, an outlet housing, a valve poppet, and a spring. The inlet housing has an inlet passageway and the outlet housing has an outlet passageway. The inlet housing and outlet housing are connected to define an internal chamber of the check valve. An inner portion of the inlet housing has a transverse wall which includes a valve seat surface and a central hole which defines a flow passageway between the inlet passageway and the internal chamber. The valve poppet is disposed within the internal chamber and has a disk-shaped body and a stem extending perpendicularly outward from a centerpoint of the body. The stem of the valve poppet is positioned in a central bore in a planar end surface of the spring. The planar end surface of the spring also includes fluid flow passages disposed about the central bore.

Abstract: A check valve cartridge for a fluid pump, the check valve cartridge including: a valve seat; a flap valve member seated on the valve seat, the flap member having a first portion movable toward and away from the valve seat; a bumper seated on the flap member, said bumper member for biasing the first portion of the flap valve member toward the valve seat. The check valve cartridge also including a stop member located on the bumper, between the stop member and the flap member; and fastening means for joining the base, flap member, bumper, and stop member to form the integral valve cartridge. The check valve cartridge is seated in a recess formed in the pump housing and is located between the pump housing and a flow manifold.