Abstract: A pressure operated valve includes an inlet and an outlet connected by a main valve having a valve diaphragm member that communicates with an operating pressure chamber. A pilot valve inlet port and a pilot valve outlet port also communicate with the operating pressure chamber. The inlet port is configured in the form of four circular slits of 0.004 to 0.007 inches width. The slits are formed by four pins of a pilot valve insert which fit into four bores in a valve body. Each pin has a ridge on its surface parallel to the pin axis, which pin locates and spaces the pin in the bore to form the slit. The slits are located flush with wall of the main inlet so that water rushing through the inlet washes particles off the slit. The pilot valve outlet port is sealed by an armature comprising a ferromagnetic sleeve and a flexible rubber core. A groove in the core receives the end of a lever which seals the pilot valve inlet port whenever the pilot valve outlet port is open and vice versa.

Abstract: A valve which is comprised of a body having an inlet passage and an outlet passage. The inlet passage intersects the outlet passage at an angle. The outlet passage has an annular shoulder. A plug is disposed within the outlet passage at the intersection of the inlet passage with the outlet passage. The plug has sides with openings thereby permitting fluids to flow the inlet passage into the outlet passage. The plug is telescopically movable in the outlet passage between a first position and a second position. In the first positon fluids flow from the inlet passage pass through the openings into the outlet passage. The openings in the plug becoming increasingly restricted as the plug moves toward the second position. In the second position the openings in the plug are totally obstructed by the outlet passage. The sides of the plug have an annular flange extending outwardly. The flange has a channel opening toward the outlet passage. A seal is disposed in the channel.

Abstract: An electromagnetic valve comprising a body containing a coil for displacing a plunger core acting upon a single part comprising on the one hand a piece forming a valve member co-operating with an opening formed in a piece constituting a seat for the valve member and on the other hand a piece slidably mounted in guided relationship within the seat piece, said single part being separated from the plunger core and operable by the latter.

Abstract: A stepped piston is axially displaceable in the stepped piston valve chamber and has a front face facing the front face of the valve seat and an axially opposite surface formed at the juncture of its piston head portion to its reduced diameter shaft portion. The piston has an axial through-bore that opens to fluid connecting bore in the valve housing while the housing has a second fluid connecting bore. The piston is displaceable in the chamber between an open position permitting substantial fluid flow between the connecting bores and a closed position having its front face resting against the valve seat face to permit a leakage flow gap between the faces when pressurized fluid acts against the piston surface and block substantial fluid flow between the first bore and the second bore. A spring in the chamber urges the piston toward its closed position.

Abstract: A flow control device having a single valve body fixed to an operating shaft which is reciprocated by a single stepping motor to control the flow rate of air flowing two by-pass passages. Two air outlet ports and one air inlet port are formed in an air dispensing housing. Interior space of the housing is divided into two by-pass passages by a first valve seat. The valve body fixed to the operating shaft comprises a first valve portion for controlling the flow rate of air in cooperation with an opening formed in the first valve seat and a second valve portion for controlling the flow rate of air in cooperation with an opening of a second valve seat provided in the other air outlet port, the first and second valve portions being formed contiguously with each other.

Abstract: A low power valve actuator includes a small motor that rotates an Acme drive screw. The rotary motion of the drive screw is translated into linear motion of a drive nut-traveling block, which is guided along and held against rotation by a pair of spaced parallel guide rods. A cantilever pin carried on the traveling block engages in a groove extending longitudinally of, a Scotch yoke lever, which translates the linear motion back into rotary motion at a further mechanical advantage. The Scotch yoke lever is reinforced and strengthened by reason of the fact that the groove is not a through-slot, but extends only partially through the lever arm. The device is made more compact by reason of the fact that the groove in the Scotch yoke lever can actually extend over the top of the valve stem.

Abstract: An actuator for an axial flow control valve for operation at high speeds comprises an axially symmetrical plunger armature prebiased against a valve seat in a normally closed position, the plunger having a head portion of increased diameter and a rod portion, the rod portion being slidably received within a central passage of a bobbin, and axially spaced from a pole piece. The valve actuator further comprises a cylindrical housing encasing in coil wound around the bobbin with a central passage configured to allow the flow of fluid around the armature and pole piece when the valve is open, the pole piece, armature housing and end piece being magnetically permeable and the magnetic circuit being completed by a similarly magnetically permeable washer fitted into the housing having an internal opening diameter greater than the diameter of the plunger rod section and less than the diameter of the plunger head section positioned on the bobbin side of the plunger head.

Abstract: The armature has a circular cylindrical main body that is surrounded at one axial end by a circular flange. The flange can conduct what would otherwise be stray magnetic flux and because the flange is on a substantial radius, it can provide a significant area for the magnetic flux even though the flange's radial dimension is small. A number of channels are formed in the armature to provide for passage of fluid past the armature.

Abstract: A chemically inert diaphragm valve is provided in which the diaphragm is attached to the plunger of a solenoid by a threaded insert. The diaphragm material, which is preferably a relatively flexible, chemically inert material such as Kalrez or Chem-Raz, is molded around one end of a machined piece with the other end of the piece being threaded. The threaded end may be received by the tapped end of a solenoid plunger. The piece contained within the diaphragm material acts to stabilize cold-flow at the valve site as well as perform the valving function.

Abstract: A nozzle for inflatable objects, made of a plastic material, including a nozzle seat adapted to engage with the inflatable object, a first annular wall extending from the nozzle seat, a relatively thin ring portion formed at top end of the first annular wall, a second annular wall extending from the ring portion to define an air inlet, a plug for blocking air inlet, a plug arm extending from second annular wall and connecting the plug with second annular wall, a plug extension formed with a projection and extended from the plug at a position remote from plug arm, a tab formed with a hole and located at a side of air inlet opposite plug arm, and a one-way membrane extending from first annular wall, which during inflation allows air to blow through air inlet into the inflatable object, whereby after inflation, the plug is fitted into air inlet and the nozzle is retracted into the inflatable object with first bent portion bent downward, while when deflating, the plug is drawn out of air inlet and the nozzle is f

Abstract: The invention contemplates a rotary valve which uses a brushless DC-motor to directly drive the flow control member of the valve. The motor is of toroidal-torque variety, with a wound stator that is fixed to the valve body, and a rotor which is fixed to the valve member. In a first embodiment, one polarity of transient stator excitation drives the rotor in one direction, from one to the other magnetically latched end of a limited angular excursion, and the opposite polarity of transient stator excitation drives the rotor in the opposite direction, to reverse the magnetically latched condition of the rotor and, therefore, of the valve member. In a second embodiment, a torsion spring is connected to apply torque in opposition to rotor displacement from one of the limits of its angular excursion, and the extent to which the valve member is operated is a function of the instantaneous magnitude of stator excitation.

Abstract: A diverter-return body for a diverter valve directing water through a filter unit and characterized by low cost manufacture in its body of round configuration that minimizes machining and polishing, and assembled with a return coupling and mounted by a diverter coupling.

Abstract: An electrically actuated valve for incremental fluid flow rate control is disclosed. The valve is comprised of a valve body having an interior with a planar outlet surface against which a rectilinear valve element is slidingly operated. The valve body includes an inlet orifice and an outlet orifice in the planar outlet surface for fluid flow through the valve body. The valve element has an orifice therethrough controlling flow through the outlet orifice in accordance with the position of the valve element, which is linearly actuated by a rotary stepper motor. Linear actuation of the valve element by the rotary stepper motor is accomplished by a shaft extending through and rotating in bearings at opposing ends of the valve body. A drive key on the shaft interfits a corresponding slot in the valve element and converts rotary motion of the shaft to linear motion of the valve element.

Abstract: The invention relates to an antinoise baffle especially for screw type valves having a first ceramic disk (13) fixed in the body with at least one hole (13a) for the flow of water, a second ceramic disk (14) resting against and rotating on the first with at least one lateral slot (14a) positionable in correspondence to and away from the one of the first disk following a quarter or half rotation of the second disk. At least one net (21) is placed and blocked of the second disk (14) and has at least one wing which extends towards the first disk near to one or each lateral slot (14a) or said second disk, the wings extending between said slot and the opening (20) for the outlet of water.

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

Abstract: An electronic microvalve design and fabrication process for a miniature gas valve. In this microvalve design an objective is to minimize the operating voltage of the valve and minimize the force necessary to close the valve and hold it tightly closed against high gas pressures. The microvalve is an integral structure made on one piece of silicon and is a flow through valve with inlet and outlet on opposite sides of the silicon wafer.

Abstract: A faucet for automatic water supply and stoppage, comprising a casing having fastened therein a battery-operated two-way electromagnetic valve controlled by an infrared controller to control a water flow control assembly to stop or open a water outlet passage. The water flow control assembly comprises a movable stopper to releasably block up the water outlet passage, an elastic element disposed above the movable stopper, covered with a cover plate, and defining with the cover plate a water chamber. The cover plate has an outlet hole at the top, which is controlled to open or close by the mandrel of the electromagnetic valve and disposed in communication with the water outlet passage, and an inlet hole which is disposed in communication with the water chamber.

Abstract: An improved adjusting device for an electromagnetically-actuated, spring-loaded positioning system in displacement engines, such as for lifting gas exchange valves in internal combustion engines. The adjusting device comprises a spring system and two electrically-operated, opposed actuating solenoids, by means of which an anchor plate may be moved therebetween, and held at two distinct positions corresponding to an open and closed position of the gas exchange valve. The fast switching time behavior of the anchor plate is assisted by selectively distributing a ferromagnetic material in a casing (sleeve) around the gap between the two electromagnets. In the preferred embodiment, the effective magnetism of each pole surface is increased by providing the casing with a plurality of holes along its mid-section. This corresponds to the neutral or dead point of the spring system and anchor plate travel between the two electromagnets.

Abstract: A ball valve having improved inherent rangeability comprises a floating ball of conventional design that is rotatable through substantially 90.degree. between a pair of seats respectively located adjacent the upstream and downstream sides of the valve within a valve housing. At least one of the seats is a one-piece lubricant-impregnated metal seat configured to provide a concave central surface portion that makes full-face direct sealing contact with the ball, and which defines multiple spaced holes that extend through the seat to increase the fluid-to-metal contact of fluid passing through the seat thereby to reduce the pressure between the upstream and downstream sides of the valve. The pattern of holes may be such as to cause the valve to exhibit an equal percentage of flow characteristic for at least a portion of the ball rotation and/or a linear flow characteristic for at least a portion of the ball rotation.

Abstract: A valve including rotor means of which position is rotatably fixed within tubular flowpassage means; rotating magnetic field generating means fixedly positioned around said rotor means; first screw means which are rotated coaxially with the rotor means together with the latter; second screw means which engage the first screw means and are movable in an axial direction of the screw without being rotated for itself by the rotation of the first screw means; valve body means connected to the second screw means; and valve seat means in engagement with the valve body means, whereby the rotor means are rotated by the action of the rotating magnetic field generated by the rotating magnetic field generating means, said rotation causes the second screw means to be moved in an axial direction of the screw, and said movement is transmitted to the valve body to adjust a degree of opening and closing of the valve.