Abstract: A bi-directional flow-control device includes a housing defining a flow passage and first and second orifices installed in the passage, each orifice being tubular and having a seat, each seat having a plurality of circumferentially spaced flow-control channels, the seat of the second orifice being axially spaced from and facing the seat of the first orifice. A resiliently deformable diaphragm is disposed between the seats, whereby flow through the passage in a first direction urges the diaphragm against the seat of the first orifice and flow through the passage in an opposite second direction urges the diaphragm against the seat of the second orifice. The diaphragm in each case deforms into the channels in the seat to varying degrees as a function of pressure differential such that in either flow direction the flow is regulated to a substantially constant volumetric flow rate over a range of pressure differentials.

Abstract: The invention provides a stem for a watering nipple for use in supplying water to poultry. The stem is hollow and formed of coiled material in a manner similar to that of a coiled spring such that the stem has a number of turns and minuscule gaps provided between adjacent turns. Upon actuation of the nipple, a water-tight seal is broken such that a majority of the water is directed to flow within the stem and directly into the mouth of the poultry. Some water, though, will flow along the outer surface of the stem. This water will either be drawn into the stem through the minuscule gaps, such that it will flow directly into the poultry's mouth, or this water will adhere to the outer surfaces of the stem to attract poultry and allow poultry to drink the water thereon.

Abstract: An isolation valve assembly for use in a pipeline comprises a valve housing (1) body having inlet (12) and outlet (13) openings. In the housing there is disposed a pair of independently operable rotary valve balls (3) each having a port (25) therethrough. The valve balls (3) are each rotatable between an open position in which the respective port is in communication with the adjacent opening and a closed position in which the valve ball closes the adjacent opening. A valve seat (9, 14) supports each valve ball in the housing and a valve seat retention member (10) is disposed in each of the openings (5). The retention member (10) defines a flow passage (11) therethrough for communication with the adjacent valve ball port and has a first end proximal to one of the valve balls. The first end supports said valve seat and a second end has means for engagement to the pipeline. The arrangement allow a relatively large bore valve assembly to have a length conforming to International Standard ANSI B16.

Abstract: A pump-over fermentation tank has a valve between the pump-over chamber and fermentation chamber providing multi-directional diffusion of the pump-over liquid into the fermentation or extraction chamber. The valve is opened slowly for irrigation of the fermentation cap and is opened rapidly to achieve mixing of the contents in the fermentation chamber. The valve is self-centering in the near-closed position, and in a particular embodiment has diffusers on the perimeter of the valve to direct the pump-over liquid to different regions of the surface of the contents in the fermentation chamber.

Abstract: A feedblock for supplying a multi-layer stream of polymeric material to an extrusion die is provided wherein the dimension of at least some of the layers of the multi-layer stream can be precisely adjusted and/or controlled. The feedblock includes a primary flow path which is used to create a first layer and two secondary flow paths which are used to create a set of second and third layers. The secondary flow paths are positioned relative to the primary flow path such that the second and third layers are deposited on opposing sides of the primary layer in a sandwich-like configuration. Each of the secondary flow paths include a contoured slot through which a secondary fluid stream of polymeric material is deposited onto a primary stream of polymeric fluid flowing in the primary flow path. The contoured slot is geometrically shaped such that adjusting the position of the contoured slot alters the shape of the secondary fluid stream as it is deposited onto the primary flow path.

Abstract: A water valve assembly includes a valve body having defined therein (i) an inlet, (ii) an outlet, (iii) a central cavity, and (iv) a component access opening, wherein fluid advancing into the valve body through the inlet must pass through the central cavity before exiting out of the valve body through the outlet, and further wherein the component access opening is configured so that a valve component may be advanced into the central cavity through the component access opening. The water valve assembly further includes a retaining bracket having a retaining portion positioned in relation to the valve body so as to block advancement of the valve component from the central cavity to a location outside of the valve body through the component access opening.

Abstract: An on-off valve mounted in a high pressurized gas container, which has a holding portion for holding a flow amount controlling member in a path formed in an upper stream side of the body of the valve, and in which a flow amount controlling member is movably held. In the flow amount controlling member, an orifice is formed. When the valve moves into an opening position, a high pressurized oxygen gas is flowed into a valve chamber by gas pressure, the flow amount controlling member moves and closes the path. At this time, the gas flow amount is restricted by the orifice, so that the pressurizing speed of the gas pressure at the down stream side of the orifice becomes slow and then heat generation due to the adiabatic compression is reduced.

Abstract: The invention relates to a shut-off apparatus for the charging device of a pressure vessel, especially for the storage of cryogenic liquefied gases, having a shut-off valve with a valve housing and a valve body stressed by a closure spring which, in order to charge the pressure vessel, can be brought into the open position against the force of the closure spring, having an apparatus for locking the valve body in the open position of the valve and having a release apparatus subjected to the action of the vessel pressure, which causes the apparatus to release the lock if a predetermined threshold vessel pressure is exceeded.

Abstract: A refill ring for a flush valve that is attached to a guide member of a valve assembly and is positioned for contact with a passage of the flush valve is described. The refill ring includes an annular-shaped solid resilient member, such as an O-ring. The refill ring is received on the guide member. Alternatively, the refill ring can be integrally formed on an underside of the diaphragm.

Abstract: An isolation valve for controlling fluid flow in a vehicular braking system, the valve comprising: a solenoid coil assembly; an armature moveably positioned within the solenoid coil assembly, the armature having a ball end engaging a ball seat and an edge groove at the ball end to modify Bernoulli force that affects movement of the armature when the solenoid coil assembly is de-energized.

Abstract: A flush valve (2) includes a body (4) having a remotely actuated element (14) between an inlet (22) and an outlet (24) of the valve. A rotatable grate (8) having angled vanes (10) is positioned at the outlet whereby the direction of fluid flow can be selected. The grate is preferably manually rotatable to provide manual selection pf the direction of fluid flow.

Abstract: An outlet valve is arranged in the bottom of a vessel intended to be filled with liquid and has a valve disc (1) connected to a piston rod (4) and a piston (5) actuated by a pressure medium. The valve disc (1) is movable between a first and a second position and is arranged to bear against a valve seat (2) in its first closed position. The piston (5) is arranged in an operating device (6) provided with a connection (7) to a source for pressure medium. The operating device (6) is designed as a unit sealed from the liquid and is arranged at such a distance from the valve seat (2) that the liquid, when the valve is open, passes a zone between the operating device (6) and the valve seat (2).

Abstract: A solenoid valve for an anti-lock brake system is disclosed which has two orifices and oil passages formed a magnetic core so that at the slip mode the amount of hydraulic oil transmitted to a wheel sylinder can be varied, its structure is simplified and its manufacture is facilitated. The solenoid valve includes a magnetic core 130 inserted into a bore 101 in a modulator 100 which has an inlet and outlet passages 300 and 310 and an invariable orifice 320, a plunger 140 installed in the magnetic core 130, and a piston 200A installed in the inlet passage 300. The piston 200A has an eccentric hole 202 formed vertically passing through its interior and a groove 203 on its top surface, thus forming a variable orifice 340 along with a lower end of the invariable orifice 320. The magnetic core 130 has a through hole 330 formed slanting upward. A lip seal 400 is formed between the outer periphery of the magnetic core 130 and the bore 101.

Abstract: A seat valve for controlling pneumatic or hydraulic pressure between at least two pressure fluid channels (8, 8′) includes a valve closure member (5) connected to a magnetic armature (4), a spring for the basic positioning of the valve closure member (5) in relation to a valve seat (7) in the valve housing (6), a magnetic core and a valve coil for the translatory movement of the magnetic armature (4). A control channel (1), a tappet (2), a sleeve (2′), a rotating field winding (3), and an opening 3′) are provided to produce a rotary movement of the magnetic armature (4) and to transmit the rotary movement to the valve closure member (5) for the variable control of a pressure fluid passage.

Abstract: A fluid dispensing device includes a valve body defining a longitudinal opening therein, an inlet in flow communication with the longitudinal opening that defines an axis generally transverse to the longitudinal opening, and an outlet defined by a first end of the longitudinal opening. A sealing member is situated within the longitudinal opening, and a valve stem is linearly movable within the longitudinal opening and adapted to seat against the sealing member to control fluid flow from the inlet to the outlet. A nozzle is coupled to the valve body adjacent the outlet and defines an opening therethrough such that fluid can flow from the outlet through the nozzle. An apparatus is situated within the nozzle so as to cause fluid flowing from the outlet through the nozzle to do work.

Abstract: A flow control valve employing a step motor includes a valve housing having liquid inlet and outlet passageways, and a guide space which is communicated with the liquid inlet and outlet passageways, a spool which is connected to be movable up and down to the guide space of the valve housing so as to control an openness of the outlet passageway, a spool guide which is accommodated in an upper portion of the guide space so as to flow a refrigerant liquid downward by being moved together with the spool, an elastic support which elastically supports the spool guide in one direction, a seal member which is connected to a lower end portion of the valve housing, wrapping around a lower portion of the spool, so as to prevent a leakage of the refrigerant liquid, and a driving mechanism having a step motor to move the spool up and down, in which employing a dilatant liquid and a diaphram is eliminated and a proportional control is enabled, to thereby enhance the flow control performance and a durability of the valve.

Abstract: A condensate discharge device which prevents metal ions from attaching and depositing on the condensate discharge port surface. An inlet, a condensate discharge port, and an outlet are formed in a valve casing, which valve casing includes an upper casing and a lower casing. A valve seat member having a discharge passage is screwed into the lower casing. The discharge passage includes a first orifice having a smaller opening area than the condensate discharge port, and a second orifice having a smaller opening area than the first orifice. A movable member is mounted through the second orifice. On end of the movable member rests on one side of the second orifice, and another end is located on the other side of the second orifice. Condensate flows slowly through the condensate discharge port, preventing metal ions from attaching there, and flows rapidly through the second orifice.

Abstract: An outlet valve is arranged in the bottom of a vessel intended to be filled with liquid comprising a valve disc (1) connected to a piston rod (4) and a piston (5) actuated by a pressure medium. The valve disc (1) is movable between a first and a second position and is arranged to bear against a valve seat (2) in its first closed position. The piston (5) is arranged in an operating device (6) provided with a connection (7) to a source for pressure medium. The operating device (6) is designed as a unit sealed from the liquid and is arranged at such a distance from the valve seat (2) that the liquid, when the valve is open, passes a zone between the operating device (6) and the valve seat (2).

Abstract: A valve arrangement includes a valve housing and a closing element movably arranged within the housing. The housing has a cylindrical bore a lateral inlet opening, an axial outlet opening, and a valve seat arranged axially at a distance away from the inlet opening. The closing element includes a sealing section adapted to seat against a valve seat so as to block fluid flow through the outlet, and tapered portion which defines a rotationally symmetrical circumferential distribution space between itself and the bore.

Abstract: A valve for regulating a gas flow has a valve housing with an inlet for the gas to be regulated, an outlet for a regulated gas flow, a valve seat with a valve opening, and a movable sealing part with a controllable shaft, the terminal side of the sealing part making and breaking a seal between the valve seat and the sealing part such that the sealing part closes and opens the valve opening and regulates the gas flow through the valve opening. In order to allow particularly small gas flows to be repeatedly regulated with high precision and a large dynamic, the plane of the terminal side of the sealing part and the plane of the valve seat form a non-zero angle, allowing the terminal side of the sealing part to press against the valve seat, or to detach therefrom, so that the terminal side gradually closes and opens the valve opening.

Abstract: A cyclic flow valve (20) for cyclically controlling the flow of combustants into a combustion furnace. The cyclic flow valve includes a valve housing (26) having a chamber (30), an inlet (36), and an outlet (46). The cyclic flow valve also includes an aperture plate (52) rigidly fixed within the chamber of the valve housing. The aperture plate has first and second apertures (68a and 68b) extending through the plate. A rotor member (54) is rotatably secured within the chamber. The rotor member is held in spaced disposition from the aperture plate. The space defines a low flow gap (92) of predetermined width between the rotor member (54) and the aperture plate (52).

Abstract: A closable radiator grid for an armored vehicle which comprises two frames which have a plurality of parallel plates, wherein one frame is closed with respect to the other in a partition plane transverse to the direction of the plates. In order to disturb the rate of passage of cooling air as little as possible and seal it well, the plates of the two frames are inclined, in cross section, in opposite directions by an angle, the thickness of the plates at the partition plane being greater than the width between the plates of the same frame and form a convergent-divergent flow channels in their open state between the plates of the two frames which are aligned with each other.

Abstract: A premix beverage system is shown including an improved pre-mix tank and pre-mix valve. The tank includes a bag therein for retaining the beverage. Pressure is applied in the tank to provide the motive force to compress the bag and thereby move the beverage from the tank to a dispense point. The present invention also shows a method for converting existing pre-mix tanks to this modified bag containing configuration. A pre-mix valve is shown having a modified control shaft and compensator for reducing turbulence and increasing laminar flow of a carbonated beverage flowing there through for reducing carbonation loss from the beverage. A modified pre-mix valve is also shown that facilitates one handed operation thereof.

Abstract: A dispensing valve for dispensing a liquid including a valve housing having a fluid inlet and a fluid outlet, an armature positioned in the housing, the armature being reciprocal between an open and closed position, a sealing disk fixedly secured to a sealing end of the armature for sealing engaging a valve seat positioned about the fluid outlet for providing selective fluid communication between the fluid inlet and the fluid outlet and a flow control device positioned in the fluid outlet for providing a substantially quiet and constant flow of liquid through the fluid outlet. The flow control device including a high pressure region and a low pressure region downstream of the high pressure region with the high pressure region of the flow control device including a flow control orifice having an inside diameter less than a diameter of the fluid outlet and the low pressure region of the flow control device intersects the high pressure region of the flow control device.

Abstract: A regulating valve comprising a housing having a cylindrical valve chamber, the valve chamber being provided with at least one inlet and at least two outlets, the inlet and the outlets being at least partially closeable as needed by a common valve body arranged in the valve chamber and rotatable around an axis, the valve body being operable by an actuator, the inlet and/or at least one of the outlets being surrounded by a sealing device on the side of the housing facing the valve body and the sealing device being able to be brought into sealing engagement with the valve body under elastic preload. The valve body is designed having the shape of the segment of a cylinder and is bounded on the peripheral side by two boundary surfaces which each have an edge on the side facing the housing, the edge overtravelling the inlet during its opening being designed as an efflux edge and having an elliptically shaped recess extending in axial direction.

Abstract: A non-wearing washer for fluid valve is non-fixedly mounted between washer retainer means disposed at a bottom end of a valve stem and the valve seat. The washer is retained in its operative position by configuring its top end to non-fixedly engage the washer retainer means while a tongue portion disposed on the underside of the main washer body is sized to extend down into the valve fitting end which attaches the valve to the discharging end of the fluid pipe. As the washer in non-fixedly mounted in between the bottom end of the valve stem and the valve seat, the rotation of valve stem 20 which translates into relative longitudinal displacement of the valve stem from the valve seat is not translated to the washer, thus eliminating the rotational wear now commonly associated with such washers.

Abstract: A diaphragm type of flush valve for use with toilet devices such as urinals and water closets includes a body with an inlet and an outlet and there is a valve seat therebetween and a valve member movable to a closing position on the valve seat. The valve member includes a diaphragm which is peripherally attached to the body. There is a pressure chamber above the diaphragm for holding the valve member on its valve seat and there is a filter and a bypass orifice connecting the inlet and the pressure chamber. The filter includes a filter ring positioned beneath the diaphragm and adjacent the outer periphery thereof. The filter ring and the diaphragm are held in a fixed position relative to each other. The filter ring has a plurality of outwardly directed circumferentially spaced filter grooves. There is a seal ring between the filter ring and the body and facing the grooves.

Abstract: A condensate discharge device which prevents metal ions from attaching and depositing on the condensate discharge port surface. An inlet, a condensate discharge port, and an outlet are formed in a valve casing, which valve casing includes an upper casing and a lower casing. A valve seat member having a discharge passage is screwed into the lower casing. The discharge passage includes a first orifice having a smaller opening area than the condensate discharge port, and a second orifice having a smaller opening area than the first orifice. A movable member is mounted through the second orifice. On end of the movable member rests on one side of the second orifice, and another end is located on the other side of the second orifice. Condensate flows slowly through the condensate discharge port, preventing metal ions from attaching there, and flows rapidly through the second orifice.

Abstract: A flush valve has a body with an inlet and an outlet and a passage connected therebetween. There is a valve seat at one end of the passage and a valve assembly is positioned to close upon the valve seat. The valve assembly includes a diaphragm positioned to control the flow of water through the passage, a guide member attached to the underside of the diaphragm and positioned within the passage, and a refill ring attached to the exterior of the guide member. The refill ring has a discontinuous outer wall which includes a plurality of spaced wall segments extending toward the flush valve passage and providing yielding frictional resistance to movement of the valve assembly relative to the passage to thereby dampen vibrations of the valve assembly during closing portions of the flush valve operating cycle.

Abstract: A fluid flow control device for maintaining a substantially constant predetermined rate of flow through a control valve including a fluid flow passage for directing fluid flow through the valve, a resilient fluid flow rate control washer positioned in the fluid flow passage for maintaining a substantially constant predetermined rate of flow through an outlet of the fluid flow passage irrespective of a pressure of the fluid in the passage and fluid flow conditioning washers for conditioning the flow of fluid through the flow rate control washer with the fluid flow conditioning washers being movable with respect to the flow rate control washer for aiding in the conformability of the flow rate control washer. Preferably, at least two fluid flow conditioning washers are positioned upstream of the flow rate control washer and at least one fluid flow conditioning washer is positioned downstream of the flow rate control washer.

Abstract: An energization indicator for a solenoid includes an electrically operable signaler (70) having a coil (72) for energizing the signaler (70) when a magnetic flux field sweeps such coil, with the coil (72) being mounted in the magnetic flux path of the solenoid coil. The indicator includes the hold-down member (116) for rotatable positioning of the bobbin assembly on the hold-down member independently of the rotated position of the hold-down member to locate the lamp as desired on the solenoid.

Abstract: A fuel injection valve for internal combustion engines with a valve member which is displaced in a bore in a valve body by the fuel pressure, counter to the action of a closing spring. The valve body has at a combustion-space end, a valve head which on a side which faces the valve body is arranged a sealing surface which interacts with a valve seat provided on the combustion-space end of the valve body, forming a sealing cross section, and including injection apertures which permit a flow of fuel from a pressure space in the valve body to the combustion space of the internal combustion engines and has an aperture cross section which can be varied as a function of the stroke of the valve member.

Abstract: The invention relates to a sanitary safety device which is interposed in a water-supply line and there is insertable in an opening in the region of a coupling point or joint. It is characteristic of the sanitary safety device according to the invention that the sanitary safety device has a flow regulator (2) or similar restrictor as well as a backflow preventer (3), these being combined in the sanitary safety device to compose a constructional unit in the form of a cartridge (1). Such is insertable for example, in the opening of a recess in the form of a cartridge mount provided in a hose connector. The cartridge (1) composed of the flow regulator (2), backflow preventer (3) and any strainer attachment (8) at the inflow end can thus be interposed in a water-supply line in a simple fashion and with little effort.

Abstract: An adjustable height fill valve assembly for controlling water level in a storage tanks, comprises a lower riser assembly comprising concentrically disposed inlet riser and an outer riser housing, each having an upper end and a lower end, the inlet riser and the riser housing connected together at the lower ends, the inlet riser being adapted for mounting in a hole in a flush tank, an upper riser assembly comprising concentrically disposed inner supply tube and an outer tubular valve housing, each having an upper end and a lower end, a main valve seat at the upper end of the inner supply tube, the upper riser assembly telescopically mounted on the lower riser assembly, a latch between the riser housing and the tubular valve housing for latching the upper and the lower riser assemblies in selected extended and retracted positions, the latch disengageable upon rotation of the upper riser assembly in either direction from a central position, a valve housing cap having a bayonet lock connection for quick connect

Abstract: A flush valve for use on toilet devices such as urinals and water closets has a body with an inlet and an outlet and a connecting passage. There is a valve seat at one end of the passage and a diaphragm is positioned to control the flow of water through the passage and close upon the valve seat. A guide member is attached to the underside of the diaphragm and positioned within the passage. There is a refill ring attached to the guide member. The refill ring has an upstream end which is peripherally spaced from the passage when the diaphragm is closed on the valve seat. The refill ring has a downstream water flow control portion having a plurality of first water flow paths which, when the diaphragm is away from the valve seat, provide the major water flowway between the inlet and the outlet. The refill ring water flow control portion has a plurality of second water flow paths, parallel with the first water flow paths, which are formed to provide a smaller volume of flow than said first water flow paths.

Abstract: Disclosed herein is a valve construction comprising a main body having therein a bore extending along an axis, adapted to contain fuel under pressure, and having, at the axially outer end thereof, an axially outwardly diverging conical surface extending at a first acute angle to the axis, and a needle valve located in the axial bore, movable relative to the main body between open and closed positions, and including a stem portion, and a head portion including a first diverging conical surface which extends axially outwardly from the stem portion at a second acute angle greater than the first acute angle and terminates in a first edge which, when the needle valve is in the closed position, sealingly engages the conical surface of the main body, and which has a diameter, a second surface which extends axially outwardly from the first edge in increasingly spaced relation from the conical surface of the main body and then in decreasingly spaced relation from the conical surface of the main body and which terminat

Abstract: A portable cleaning device dispenses at least a first cleaning fluid and a second cleaning fluid. The device includes at least two user controllable fluid dispensing devices, a frame means, a first fluid reservoir for holding the first cleaning fluid, a first pump for pumping the first cleaning fluid from the first reservoir, and a first manifold for receiving the first cleaning fluid from the first pump, and distributing it to a first line set comprising a plurality of lines. The lines deliver the first cleaning fluid to the fluid dispensing devices. A second fluid reservoir holds a second cleaning fluid, such as water, and delivers it to a second pump which pumps the second cleaning fluid to a second manifold. The second manifold includes a plurality of exit ports for distributing the second fluid to a plurality of second lines which deliver the second cleaning fluid to the fluid dispensing devices.

Abstract: A fuel injection valve includes a valve-closure member which is provided with semicircular flattenings. The deflecting surfaces delimiting the flattenings and formed obliquely to the longitudinal valve axis cause a rotational energy to be applied to the fuel. The application of rotational energy to the fuel makes it possible to clearly reduce the change in flow rate caused by the rotational position of the needle, so that the variance in the static flow rate is considerably decreased. The valve is particularly suitable for application in fuel injection systems of mixture-compressing internal combustion engines having externally supplied ignition.

Abstract: A metering valve wherein an outer casing defines a first and second chamber communicating with each other via a hole and respectively communicating externally of the casing via a fluid inlet conduit and a fluid recirculating conduit. The first chamber also communicates externally via a supply conduit, and houses a shutter movable axially inside the chamber between a first position wherein a first portion of the shutter closes the aforementioned hole, and a second position wherein a second portion of the shutter closes the supply conduit. For any intermediate position between the first and second positions, the total area of the gaps between the supply conduit and the second portion and between the hole and the first portion is notably constant, so that, for any position of the shutter, the total section of the fluid passage of the metering valve is constant.

Abstract: Improved frozen beverage dispensing apparatus includes a latch member for inhibiting operation of the dispensing apparatus when the apparatus is in a defrost cycle. The apparatus includes a container for storing a beverage under pressure in at least a partially frozen state, a normally closed dispensing valve mounted with the container and a manually operable lever for operating the dispensing valve. The dispensing valve has a longitudinal bore communicating with the interior of the container. A defrost relay operates a solenoid at the onset of the defrost cycle to move the latch member into engagement with the lever. When the defrost cycle has been completed, the solenoid disengages the latching member from the lever so that the lever can be operated to open the dispensing valve. A faucet member extends downwardly from the dispensing valve.

Abstract: A valve system for mixing two pressurized liquids, A and B, in varying proportions ranging from 0% liquid A, 100% liquid B to 100% liquid A, 0% liquid B comprises two liquid inlet passages, a mixture outlet passage, and a spool valve disposed therebetween for directing the desired proportions of liquid to the outlet passage. The liquid proportions are adjusted by rotating the spool valve between two predetermined stops thereby allowing incoming fluids to flow at different rates into offset bores extending through the spool valve. Such a valve system is useful in vehicle and aircraft cleaning systems wherein one liquid comprises a soap solution and the other comprises water.

Abstract: A control valve well-suited for controlling the flow of particulate solids comprises a valve body having a flow passageway comprising inlet and outlet passages extending transversely to a slide chamber. A plug member having a flow orifice is mounted for movement within the slide chamber to seal the flow passageway when the flow orifice is out of register therewith and to connect the inlet and outlet passages in flow communication when registered therewith. One of the inlet passage and the flow orifice has a cross section including a tapered slot portion which terminates in an apex defining an angle of from about 45 to 90 degrees and an associated polygonal base portion or circular arc base portion subtending from 225 to about 270 degrees of arc. The other has a peripheral shape which includes a leading edge disposed substantially perpendicular to the direction of travel of the plug member.

Abstract: A flow control device including an elongate body with a central longitudinal flow passage with upstream and downstream ends; an elastic orifice plate with a central orifice extending transverse the flow passage; and, a diffuser part projecting into the flow passage downstream from the plate and upon which a jet of fluid issuing and flowing downstream from the orifice in the plate impinges and is diffused; the diffuser part is placed downstream from the plate a distance so that it serves to diffuse the jet of liquid before its movement downstream in the flow passage generates a minus downstream of the plate.

Abstract: A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets has a body with an inlet and an outlet and a valve seat therebetween. There is a valve member movable to a closing position on the valve seat to stop flow between the inlet and the outlet. The valve member includes a diaphragm peripherally attached to the body, a refill ring attached to the diaphragm for controlling water flow to the outlet and a retaining disc which is used to attach the refill ring to the diaphragm. There is a pressure chamber above the diaphragm for holding the valve member on the valve seat. A filter and bypass orifice connect the inlet and the pressure chamber, with the bypass orifice being formed in the retaining disc and the filter being formed in part by a portion of the diaphragm.

Abstract: A diverter valve (10) provided at a three-way junction through which passes a high temperature gas, the valve having a closure member (12, 13, 14) pivotable between a first position in which it closes a first outlet branch of the junction and a second position in which it closes a second outlet branch of the junction, wherein the closure member carries one or more deflecting vanes (16) positioned (a) in front of the closure member so as to direct the flow of gas into and through the first outlet branch when the closure member closes the second outlet branch and (b) to be hidden behind the closure member and to be isolated from contact with the gas flowing into and through the second outlet branch when the closure member closes the first outlet branch.

Abstract: The present invention relates to a valve including a valve member co-operating with a seat provided with a crenellated portion disposed around the portion of the seat on which the valve member rests, said crenellated portion being constituted by teeth separated by gaps, the inside walls of the teeth being portions of a vertical axis cylinder, the width l of the gaps being less than the width b of the inside walls of the teeth, wherein the end wall of the valve member facing the crenellated portion when the valve member is in its closed position is convex in shape, co-operating with the inside wall of each tooth to form a channel that flares from top to bottom of the tooth, the point of contact C between the valve member and the seat being at a distance d from the base B of the crenellated portion lying in the range 0.25 times to 0.5 times the width l of the gap. Vibrations are eliminated at partial load and pressure fluctuations downstream from the valve are reduced.

Abstract: The present invention provides a control valve with an improved closing function that functions over a long period of time and the flow rate control can be carried out over a wide range.A valve body (1) is provided inside thereof with a partition (4) separating an inlet passage (2) and an outlet passage (3). The partition (4) is provided with an opening portion (5) communicating the inlet passage (2) and the outlet passage (3).A shutoff valve (10) is disposed opposite the opening portion (5). The diameter of the opening portion (5) is increased and curves toward the side of the shutoff valve (10).A control plug (12) is arranged on and projected from the lower end of the shutoff valve (10); said control plug being located on the large diameter side of the opening portion (5), is coaxial with the opening portion (5), and has a flange portion (12a) defining an orifice (14) between the inner surface of the opening portion (5) and the flange portion.

Abstract: A toilet device flush valve has a body with an inlet and an outlet and a valve seat in the body positioned therebetween. There is a movable diaphragm which closes upon the valve seat to control flow between the inlet and the outlet. A piston is attached to the movable diaphragm and there is a flow control ring mounted on the piston. The flow control ring includes water passages forming the sole flow path between the inlet and the outlet when the piston is in the open position. The passages on the flow control ring are sized to correspond to the desired flow rate through the flush valve. The passages extend in a direction to give the water flowing therethrough both axial and circumferential components to dissipate power in the water flowing through the flush valve to provide a relatively constant flow rate which is independent of the water pressure applied at the flush valve inlet.

Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.

Abstract: A household appliance, solenoid controlled, pilot actuated inlet water valve has a diaphragm insert with a bleed valve that substantially closes when a main valve is open to reduce water and contaminate flow through the bleed passage. The pilot valve outlet extension has openings to reduce vacuum drawn from the outlet into an actuation chamber thereby further reducing water flow through the bleed passage. The bleed passage is internally and externally configured to reduce contamination impairment. An anti-hammer rib or lip is placed on the pilot valve outlet extension upstream of a guide tip which provides less close-fitting surface that may be impaired by contaminates while still dampening valve closing to reduce valve noise and pipe hammer.