Abstract: A control valve for a variable displacement compressor is provided. A retainer cylinder in the control valve includes a first cylindrical member made of non-magnetic material and a second cylindrical member having a bottom portion made of magnetic material. A shim is intervened a bottom surface of a plunger and inner bottom surface of the second cylindrical member. The retainer cylinder has good magnetic permeability between a coil and the plunger, even though the wall of the cylinder thickens to improve the withstanding pressure to internal refrigerant pressure.

Abstract: Butterfly valves of this invention generally comprise a flapper element that is rotatably disposed within an annular bore of a valve housing. The valve may be configured to provide an improved degree of gas flow control sensitivity from a closed to a partially opened position through the use of projections that extend radially inwardly from the housing bore, are positioned at diametrically opposed positions within the bore, and that are specifically configured to provide a gradual increase in gas flow across the valve as the flapper is moved from a closed position to a partially opened position. The butterfly valve may be configured having further projections that extend radially inwardly a distance therein, that are positioned at diametrically opposed positions in the bore, and that include faces that are sized and shaped to cooperate with respective opposed surfaces of the flapper to seal off gas flow within the bore when the flapper is placed into a closed position.

Abstract: A positioner for a valve that is actuated by means of a drive. The positioner includes a locator (9) and a control unit (13). The locator (9) detects the actual position of an actuator (7). The control unit (13) compares the actual position with a predefined desired position, and generates an actuating signal. A magnet (18) having a magnetoresistive sensor, preferably a GMR sensor, is provided as the locator. The locator (9) is less susceptible to dirt and less prone to wear and tear than a conventional slide potentiometer. The positioner is thus less fault-prone.

Abstract: A device used for pneumatic control, includes a control piston carried in a cylinder. The control piston is mounted so as to be movable in the direction of a longitudinal piston axis, and a primary flow path that can be closed by the control pressure passes through the cylinder. The control piston is provided with a control surface that faces a control chamber of the cylinder and that is designed to transmit a control force to the control piston. The control piston includes a piston shank whose cross-sectional area is dimensioned so as to be essentially equal to a cross-sectional area of a flow orifice of the primary flow path that can be closed by the control piston and that faces an interior cylinder chamber.

Abstract: A water flow control device that regulates the amount of water flowing through a shower head is disclosed. The device is interposed between the shower head and the water supply line and consists of a sensor and a solenoid that actuates and deactuates a water limiting valve connected in the water supply line. The device can increase or decrease the flow of water through the shower head depending upon the position of the person with respect to the shower head. In this manner, the amount of water used by a person when showering is conserved.

Abstract: A ball valve (10) includes a body (A) having a passageway (12) extending therethrough with a ball member (B) disposed in the passageway and mounted for selective rotation between valve open and valve closed positions to control fluid flow through the valve. A pair of flange grooves are provided in the body on opposite sides of the ball. each flange groove extending radially from the passageway. A pair of seat rings (16) are disposed in the passageway on opposite sides of the ball. Each seat ring has a first sealing surface (24) in contact with an outer surface of the ball and a radially extending annular flange or tab (30) received in an associated one of the flange grooves (34). The seat design further includes a pair of annular flange seals (18, 20) each disposed in a respective one of the flange grooves.

Abstract: An electromagnetic valve apparatus prevents fluid leakage and contains a stationary core having a shape of a bottomed, single-piece cup constructed by combining a housing portion, an attracting portion, a thin-walled portion that joins the housing portion and the attracting portion, and a flange portion. The housing portion has a closed bottom portion, and the attracting portion is adjacent an open end of the stationary core. The housing portion reciprocally supports a movable core. The thin-walled portion is a magnetic resistance portion for preventing leakage of magnetic flux. A magnetic cylindrical attracting member is press-inserted in the inner wall of the attracting portion located on the opened side of the stationary core. The attracting member is arranged face to face with the movable core in the reciprocating path of the movable core. Upon energizing a coil, a magnetic attractive force attracts the movable core to the attracting member.

Abstract: The invention relates to a valve, comprising a valve body for controlling a medium flowing through the valve, a valve housing (3), in which the valve body (1), which has at least one gasket (4) for sealing cooperation with the valve housing (3) or where appropriate with a cage (5) arranged in the valve housing, is axially displaceable by a spindle (6) in the direction towards and from a valve seating (7) in the valve. The gasket (4) extends peripherally around the circumference of the valve body (1) and is expandable in the radial direction to tight abutment against the valve housing (3) or the cage (5) arranged in the latter through axial pressing of at least one press member (9′) acting on the gasket (4) when the valve body (1) is just before and/or in its closing position.

Abstract: An automatic flusher employs an infrared-light-type object sensor to provide an output on the basis of which a control circuit decides whether to flush a toilet. After each pulse of transmitted radiation, the control circuit pushes a new entry onto stack if the resultant percentage of reflected radiation differs significantly from the last, and it includes in that entry's direction field an indication of whether the percentage change was positive or negative. Otherwise, the control circuit increments the existing top entry's duration field. From the numbers of entries in a row having a given direction and the sums of the values in their duration fields, the control circuit determines whether a user has approached the facility and then withdrawn from it, and it operates the flusher's valve accordingly.

Abstract: A self-draining, valve for fluid flow control. Upon removal of fluid supply pressure from the valve, the valve automatically reverts to a partially open state allowing fluid in the valve to drain. The disclosed valve is particularly useful in applications where draining of fluids with bio-matter or other contaminants is desired after removal of supply pressure in order to reduce contamination buildup and/or permit thorough cleaning.

Abstract: A solenoid valve for controlling a fuel injector of an internal combustion engine having an electromagnet, a movable armature having an armature plate and an armature pin, and a control valve element which is moved with the armature and works together with a valve seat, for opening and closing a fuel drain channel of a control pressure chamber of the fuel injector, is provided. The armature plate is mounted on the armature pin so that it is movable by sliding under the effect of its inertial mass in the closing direction of the control valve element against the tension of a return spring acting on the armature plate. In order to be able to easily set the maximum slide path of the armature plate, an actuator is provided on the armature plate which is arranged on a section of the armature plate facing away from the electromagnet and is adjustable in the sliding direction of the armature plate relative to a face of the armature plate facing the electromagnet.

Abstract: A new and improved gear pump assembly, and a new and improved hot melt adhesive dispensing assembly having a plurality of the new and improved gear pump assemblies incorporated therein, wherein each gear pump assembly is mounted upon the dispensing assembly in an entirely independent manner such that each gear pump assembly can be individually removed from the dispensing assembly, and replaced back onto the dispensing assembly, as may be necessary in connection with, for example, repair or maintenance procedures. The independence of each gear pump assembly also effectively prevents damage to or failure of one gear pump assembly from experiencing additional damage as well as from adversely affecting the operation of the other gear pump assemblies.

Abstract: An electromagnetic actuator for a fluid pressure control valve in a fuel injector for an internal combustion engine is disclosed. The actuator comprises a valve body having an opening therein and a bore extending at least partially therethrough. A control valve having an armature attached thereto is inserted into the bore in the valve body. A magnetic core, encircled by windings, is located in the opening in the valve body. A valve spring biases the armature away from the magnetic core. The windings, when energized, produce a magnetic circuit that includes the valve body, magnetic core, armature, and retainer ring to attract the armature towards the magnetic core.

Abstract: A vacuum valve comprises a valve body with a valve opening having an axis a closing member which is displaceable between an open position of the valve and a closed position of the valve in a closing direction extending at an angle to the axis of the valve opening, a sealing surface which surrounds the valve opening and which has at least two main portions which are arranged so as to be offset relative to one another in the direction of the axis of the valve opening, are connected with one another by connection portions, and whose imaginary generating lines have at least a portion or a tangent extending substantially vertical to the closing direction, a circumferentially closed seal which is arranged at the closing member and which has two main portions corresponding to the main portions of the sealing surface and connection portions which connect the two main portions, which seal can be placed against the sealing surface by of a displacement of the closing member in the closed position of the valve, wherein a

Abstract: A fuel injection valve includes, in part, a pipe, a fixed connector (fixed core), a movable core, a solenoid coil and a needle valve. In the fuel injection valve, a diameter of a fixed action surface of the fixed connector is made smaller than a movable action surface of the movable core. Therefore, magnetic flux around an outer circumferential portion is transmitted from the fixed action surface to the movable action surface substantially in a direction perpendicular to the movable action surface. Thus, an electromagnetic force acting therebetween is efficiently transformed to an attracting force for the movable core.

Abstract: A valve opening/closing drive device includes a main body case formed by press molding and connected respectively with an inflow pipe and an outflow pipe. A valve element is provided within the main body case for opening and closing an opening part and a motor having a stator part placed on the outside of the main body case and a rotor part positioned inside of the main body case and opposite to the stator part for opening and closing the valve element is also provided. The device further includes a holder member supported by the main body case and provided with a temporary holding part for temporarily holding the inflow pipe or the outflow pipe when the pipes are joined with the main body case.

Abstract: A pressure control valve serves to regulate the fuel pressure in a fuel system. The pressure control valve includes a valve housing, at least one inlet, at least one outlet, and at least one prestressed, electrically actuatable, and at least regionally ball-shaped valve member. The valve member cooperates with a valve seat structurally connected to the housing. To make it possible to achieve stable closed- and/or open-loop control properties of the pressure control valve, it is proposed that the valve seat widen conically toward the valve member, and the ball diameter of the valve member is selected such that with the valve closed, the valve member touches the valve seat in the vicinity of its farther end.

Abstract: The present invention relates to a device containing a tube for a varied flow, comprising a tube being fixed in both its ends, whereby the tube is arranged to be stretched or shortened by longing or shortening of the distance between said attachment points.

Abstract: A bleed device for hydraulic circuits and a kit for bleeding are described that enable bleeding of the hydraulic circuit independently of the removal or slackening of the bleed device. In one embodiment, the bleed device comprises two opposing ends having a bleed duct extending through them. One end is designed to close the aperture of the hydraulic circuit. The other end is part of a quick-release connector and is designed to couple with the other part of the quick-release connector, whereby the bleed device may be connected to a bleed liquid collection vessel. Also, coupling of the quick-release connector simultaneously opens a one-way check valve in the bleed duct. The one-way check valve closes during normal operation of the hydraulic circuit. A protective cap on the bleed device keeps foreign matter from fouling the quick-release connector end.

Abstract: An improved structure of a LPG tank valve having a threaded connector mounted onto a LPG tank and a rotating button being provided to one end of the threaded connector, and an urging device being provided to the threaded connector, and the bottom end of the rotating button aligned with the urging device being provided with an urging rod, the urging device includes a tube body, an urging rod and a spring, and one end of the tube body is vertically locked to the threaded connector, via the connector and the space of the valve, the tube body is provided with the urging rod, and the rod head of the urging rod is higher than the tube body and is protruded into the mouth of the LPG tank valve, and the lower end of the rod head is connected in series with a spring urged the wall of the tube body, and a gap is formed between the rod body of the urging rod and the wall of the tube body and when the valve is mounted onto the tank, the bottom end of the tube body does not urge against the needle valve of the tank and on