Abstract: The invention relates to a method for the contactless detection of the position of a butterfly-valve shaft of a butterfly valve connecting piece, the butterfly-valve shaft being driven by an electric actuator and having a magnet at one end, which is aligned in a contactless manner with a sensor that is located on a cover. An aim of the invention is to reliably guarantee the detection of the position of the butterfly-valve shaft, even over particularly long periods of time using a contactless position detection device. To achieve this, the sensor has a first and a second magnetoresistive sensor element, an approximately sinusoidal signal being generated in the first sensor element and an approximately cosinusodial signal being generated in the second sensor element by means of the magnet, during the rotation of the butterfly-valve shaft. According to the method, an approximately arc tangential signal is generated in the butterfly-valve connecting signal.

Abstract: An adjustment device for adjusting a control element of a flap valve in heating, ventilating and air-conditioning systems includes a drive motor, and a drive train in driving relationship with the drive motor. The drive train has an output member which is connected to a control element to be adjusted. A recorder is provided for recognizing and/or adjusting a position of the control element and/or a component of the drive train, wherein the recorder has a control member which is directly connected in form-fitting engagement with the output member of the drive train.

Abstract: An apparatus for controlling cutting fluid of a processing machine is disclosed to include a cylindrical rotor, a power source for driving said rotor to rotate, a control mechanism having an encoding device and a sensor, and a processor. The rotor has a main passage and a branch passage both in communication with a cutting fluid supply loop of the processing machine. The encoding device is fixedly mounted on the rotor. Once the sensor detects a code from the encoding device identical to a built-in control serial code of the processor when the processor orders the power source to drive the rotor to rotate based on the built-in control serial code, the power source is ordered by the processor to stop said rotor at a predetermined angle.

Abstract: An alternating pressure valve system is provided comprising a blower with an air intake and an air outlet; a rotor valve assembly connected to the air outlet from the blower where the rotor valve assembly comprising: a housing with an air intake, a first air outlet, a second air outlet, and a circular chamber; and a wedged shaped rotor valve rotatably contained within the circular chamber of the housing such that the rotor valve can rotate to partially block the first air outlet, partially block the second air outlet, or block neither air outlets; The rotor valve is preferably controlled by a gearmotor and pressure sensors to detect the relative pressure in each outlet.

Abstract: A method of and apparatus for operating an actuator which is used to open and close valves in pipelines in order to avoid pressure surges and resonances during the closing operation in pipelines to be shut off. The closing operation of the valve is subdivided into two closing phases (S1 and S2). During the first closing phase (S1), the actuating element is moved at maximum actuating speed down to a predefinable position (P) of the actuating element, starting from the open state of the valve. From this position (P), the actuating speed of the actuating element is reduced continuously and steplessly with a predefinable gradient. Additionally when the actuating speed in the second closing phase is reduced to a predefinable constant value the method and apparatus may include a third phase during which the actuator maintains that speed value until the valve is closed.

Abstract: A valve system (10) includes a piezoelectric transducer (44) mounted on its housing (16). To change the valve's state, a microcontroller (54) causes a valve driver (58) to drive current through the actuator's coil (12) at a relatively high level. It continues driving current through the coil (12) at the high level until the transducer's output reaches a magnitude characteristic of the disturbance that typically results when the actuator's armature (22) reaches the end of its travel. At that point, the microcontroller (54) reduces coil drive.

Abstract: The invention relates to a pneumatic, reciprocating rotary driving mechanism unit for operating a shut-off member in a shut-off valve, comprising a substantially closed housing, in which a drive shaft (30) is journalled, a pneumatic control valve (39-42) for controlling said drive shaft and first signal transmitting means (54, 55) for delivering control signals to said pneumatic control valve, wherein the housing consists of a base part (48), in which the drive shaft and the pneumatic control valve are present, and a first function part (53), in which the first signal transmitting means are present, which first junction part is detachably and exchangeably connected to said base part so as to make it possible to exchange said first function part for a second function part containing second signal transmitting means of a type for the purpose of changing the manner in which the drive shaft can be controlled.

Abstract: A precision controlled fast valve includes a diaphragm, a piezo actuator, and a plunger. The plunger is adapted to engage the diaphragm to create a seal which closes the valve. The piezo actuator is attached to the plunger and adapted to receive control signals which define the distance and speed of travel of the plunger. A control signal is received by the piezo actuator which causes the plunger to rapidly travel to a first position which is proximate to the diaphragm but does not create a seal. A second control signal is received by the piezo actuator which causes the plunger to pinch the diaphragm and creates a seal (due to the blocked force generated by the piezo). Creating the seal without excessive forces reduces the wear on the seal, allowing longer intervals between maintenance.

Abstract: The solenoid valve comprises a duct having an inlet opening and an outlet opening through which the fluid can pass substantially without changing direction, a valve seat within the duct, a closure member movable between a closure position and a fully-open position, and electromagnetic means for acting on the closure member in order to move it to any position between the closure position and the open position in dependence on an electrical control quantity. The electromagnet means comprise a core of ferromagnetic material, fixed firmly to the closure member and movable substantially along the same axis as the fluid, and a solenoid for generating a force on the ferromagnetic core along the same axis. A second closure member, movable along the same axis, may be provided in order to provide a solenoid valve with a double seal. The solenoid valve described is less bulky and expensive than known solenoid valves because it does not require a metal housing body.

Abstract: A valve assembly HAS an element movable in a mechanical journal arrangement relative to a valve opening to establish an opening position of a valve, and A control unit for controlling the application of an oscillatory electromagnetic force to the element (8) having an known peak amplitude to cause the element to execute a sympathetic oscillatory motion as a friction reducing maneuver. The control unit is adapted to control the peak amplitude of the oscillatory electromagnetic force to sequentially apply a number of different peak amplitudes, each during a different measurement period. A monitor detects changes in the opening position of the valve during each of the measurement periods and provides a measure thereof. A processor is connected to the control unit and to the monitor to determine a working amplitude of the oscillatory electromagnetic force at which the detected changes will be minimized and to supply the determined working amplitude to the control unit.

Abstract: A method and apparatus for correcting a cock driving device in a beverage dispense. A manipulating lever for a dispensing cock is correctly opened and closed at all times by the cock driving device. The manipulating lever for the dispensing cock is provided with an interlock member which moves back and forth integrally with the lever, and the interlock member is provided with a magnet. A pair of hole elements capable of sensing the magnet are arranged one behind the other, spaced from each other, on a mounting plate arranged on a slider. The magnet is set to face an intermediate position of both hole elements of the slider staying at a standby position, with the dispensing cock staying at a neutral position. A control board moves the slider for correction to a position at which the magnet reaches the intermediate position of the hole elements if the magnet does not face the intermediate position of the pair of hole elements.

Abstract: A security system including mechanism for detecting intrusion into a building such as a home, mechanism for activating the detecting mechanism, mechanism for turning off the supply of water to the outdoor water outlet, the activating mechanism including mechanism for controlling the shutting off mechanism to prevent supply of water to the outlet when the detecting mechanism has been activated.

Abstract: A system and method for controlling and monitoring operation of a valve are disclosed. The system includes an actuator and a switch that, upon being actuated, provides a control signal to the actuator designed to cause the valve to change from a first state to a second state. The system further includes a sensor positioned downstream of the valve, an indicator, and a detection device coupled at least indirectly to the switch, the sensor and the indicator. When not detecting a sensor failure, the detection device allows the indicator to indicate that the valve has changed its state in response to the switch being actuated when the sensor indicates that the valve has so changed. Upon detecting a sensor failure, the detection device prevents the indicator from indicating that the valve has changed its state in response to the switch being actuated.

Abstract: Resin members, on the surfac s of which metal films are formed, are used for; an auxiliary air passage provided in a main air passage, in which a sensor element of a physical quantity sensor such as an air flow sensor, an intake-air temperature sensor, etc., is situated; a housing; and so forth; in order to decrease both the thermal conductivity and the emissivity of those components to respective small values, whereby the temperature increase of the sensor due to both the heat conduction and the heat radiation can be suppressed.

Abstract: A solenoid valve having a valve disc on a movable armature that is subjected to a restoring spring and a magnet coil. The magnet coil has a pick-up winding with a high-electrical capacity for opening and closing the valve and a holding winding whose capacity is such that it can hold the valve disc in the position in which it is lifted off of the valve seat when the valve is opened or on the valve seat when the valve is closed. A capacitor can be charged with a system voltage that is applied and can be momentarily connected to the pick-up winding in order to open or close the magnetic valve is also provided.

Abstract: A flow rate control valve includes a second substrate having a flexible thin film and interposed between a first substrate having a heating mechanism and a third substrate having a sealing section. The first substrate and the second substrate close an internal space formed adjacent to the heating mechanism and filled with an expandable material. The sealing section and the flexible thin film function together as a valve. The heating mechanism heats and expands the expandable material whose pressure is detected by pressure-detecting sensors. The detected pressure value is fed back to a control mechanism of the heating mechanism for opening/closing a fluid flow passage and controlling the valve opening degree.

Abstract: A control valve (10) for a control circuit (30) having at least one first control unit (14) that, depending on at least one operating parameter and/or the ambient temperature, releases, throttles, or closes a branch of flow (32) to a heat exchanger (16), and controls a bypass line (34) in complementary fashion. The control unit (14) generates a setpoint (36) for the position of a valve member (26) driven via electric motor or electromagnetically, which is processed by a second electronic control unit (20) integrated in the control valve (10) with a determined actual value (38) of the position of the valve member (26) to a position variable for the position of the valve member (26).

Abstract: A valve (1) for regulating fluids has a piezoelectric unit (4) for actuating a valve member (3). The valve member is embodied with a control piston (9), adjacent to the piezoelectric unit (4), and with at least one actuating piston (14), adjacent to a valve closing member (15). A hydraulic chamber (16) functioning as a hydraulic booster is disposed between the pistons (9, 14). The valve closing member (15) cooperates with at least one valve seat (18, 19) and divides a low-pressure region (20) from a high-pressure region (21). An electric control unit (12) specifies the trigger voltage for the piezoelectric unit (4) as a function of the pressure level in the high-pressure region (21), a leakage loss from the low-pressure region (20) and the hydraulic chamber (16), and the refilling of the low-pressure region.

Abstract: An actuator base, bobbin, and pole piece form a pocket for an armature that a flexible membrane encloses to form an armature chamber filled with an incompressible fluid. The membrane protects the armature from exposure to corrosive fluids flowing in a conduit. Conduit flow can be stopped by driving the membrane against a valve seat. Pressure from the controlled fluid in the conduit is transmitted through the membrane to the fluid within the armature chamber so that the armature does not need to counteract force applied to the membrane by the conduit fluid's pressure.

Abstract: A controller apparatus for a faucet, for controlling the faucet using energy created by electric power generation, wherein all components used therein keep necessary performance thereof for a long period of time and wherein no components require exchange thereof until the product service-life of the faucet apparatus is reached, thereby realizing true maintenance-free apparatus. The controller apparatus for a faucet comprises a capacitor; a voltage conversion means for converting the capacitor voltage to a predetermined voltage; a faucet controller circuit operated with electricity supplied from the voltage conversion means; and an electromagnetic valve for opening or closing a flow passage by said faucet controller circuit. The controller apparatus for a faucet further comprises an electric power generation means and a primary battery, and the capacitor is charged with either of an output of the electric power generation means and the primary battery.

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 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: 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: The valve device includes a valve body and a bonnet with a fitting clamped therebetween and extending within body and bonnet bores. The fitting and valve body have bore portions with a valve stem extended therein and through a valve seat and having opposite end portions of the same diameters and in fluid sealing relationship with the above bore portions axially opposite the valve seat. The body has inlet and outlet passages opening to the fitting and body bores axially opposite the valve seat and axially intermediate the stem end portions. A sensor is connected to the valve stem and is movable against spring action to move the valve stem to its open position. An actuator, for example an electric motor, is mounted to the bonnet and operable for forcing the sensor to move the valve stem to its valve open position.

Abstract: A method and system for controlling a household water supply provides protection of structures and fixtures from water damage due to plumbing failure or other causes. The household water supply is shut-off in conformity with a determination that the household is unoccupied and thereby provides automatic protection from water damage.

Abstract: An automatic flush actuation apparatus, which is incorporated with a flushing system having a water inlet, a water outlet, and a water chamber communicating therebetween, that includes a valve member being moved by a flush lever for releasing the water pressure within the water chamber to allow the water passing from the water inlet to the water outlet, and a sensor-operated powering assembly including a relief valve provided at the valve member for controlling the water flowing to the water outlet and an actuator arranged in such a manner that while sensing a presence of a user of the flushing system, the actuator is driven to move the relief valve to an opened position for releasing the water pressure within the water chamber to allow the water passing to said water outlet.

Abstract: A valve system (10) that employs a piezo-electric element (38) to activate a fluid flow valve (18) so as to use a minimal amount of electrical energy. The piezo-electric element (38) activates a pilot pressure valve (36), which allows a control fluid to pass to a main control valve (44). The control fluid causes the main control valve (44) to activate a working element (16), which in turn operates the fluid flow valve (18). A switching assembly (70) is employed to activate the piezo-electric element (38). The switching assembly (70) can include various types of switching devices, such as RF switching devices, optical switching devices, infrared switching devices and low voltage electrical switching devices.

Abstract: An apparatus for flow control in an environment that has independent units includes a flow system for carrying a flow with a controller in one of the units. The apparatus operates the controller from at least one location outside the one of the units in response to a supply of power with a terminal for positioning at the location, a connector for connecting the terminal to the controller, and a power supply for supplying power from the terminal through the connector to the controller when the power supply is connected to the terminal and operating the controller therewith.

Abstract: The invention relates to a water fitting including a pipe having at least one water hook-up that is connected to a valve. A housing is detachably connected to the pipe and has a spout line that, when installed, is connected to the outlet of the valve. A screw secures the housing on the pipe. A sensing device is fitted inside the pipe. When the screw is removed, said sensing device automatically closes the valve and blocks the same in the closed position. This reliably prevents water from flowing out when the housing is disassembled.

Abstract: An electrically controlled flow valve is disclosed that is co-located with a manually operated, remote, water supply flow valve to control the flow of water through a hose from the water supply valve to an appliance such as a washing machine. A controller in the appliance controls the new flow valve to control the flow of water to the appliance, and isolates water pressure from the hot and cold water supply lines from the hoses and the washing machine when the appliance is not in use. Any hose leak that may occur when the alliance is not in use is limited to the small amount of water that normally lies in the hoses.

Abstract: A flow rate control valve includes a coil disposed in a first body, a movable iron core axially displaceable under a magnetically exciting action of the coil, a fixed iron core fixed in the first body, a fluid supply port supplied with a fluid, a fluid discharge port discharging the fluid, a projection formed for a diaphragm which is connected to the movable iron core and which is formed of an elastic member, a valve seat for the projection to be inserted therein, and a spring which urges the movable iron core to separate from the fixed iron core in a non-excited state.

Abstract: The invention is system and method for detecting a leak and operating an existing valve in response to the detected leak. In this regard, a receiving unit may be installed on an existing shutoff valve. The valve may control the flow of a fluid into a site. A transmitting unit may be installed in the vicinity of an appliance receiving the fluid. The transmitting unit may include a detector capable of detecting the fluid. In response to the detector detecting the fluid, the transmitting unit may transmit a signal including a unique 32 bit code. A receiver within the receiving unit may be capable of receiving the signal. Additionally, a PIC microprocessor within the receiving unit may be configured to receive the signal from the receiver and determine if the signal contains the code. In response to determining the signal contains the code, the PIC may control a motor to operate (e.g., turn off) the valve. The motor may be configured for attachment to the valve via a coupler.

Abstract: A control system for determining and controlling position and velocity of a valve member relative to a valve contact surface in a valve system preferably having an actuator comprised of a piezoelectric device. The control system includes an actuator control circuit for applying a control signal to the actuator to move the member relative to the contact surface. The control system further includes a seat detection circuit for determining when the member impacts the contact surface. The control system further includes a velocity control circuit which utilizes the output of the seat detection circuit from the previous actuation cycle to control the position and velocity of the member relative to the contact surface in the subsequent actuation cycle.

Abstract: A control method for an electromagnetic actuator for the control of a valve of an engine from a rest condition, in which an actuator body actuating the valve is held by at least one elastic body in an intermediate position between two de-excited electromagnets; in order to bring the actuator body into a position of abutment against a first electromagnet, the two electromagnets are alternately excited in order to generate a progressively amplified oscillating movement of the actuator body about the intermediate position, the excitation parameters of each electromagnet being calculated as a function of the difference between the elastic energy statically stored by the elastic body in the abutment position and the mechanical energy dynamically stored in the mechanical system formed by the actuator body and the elastic body.

Abstract: The invention relates to a valve for controlling fluids, having a piezoelectric unit (4) for actuating a valve member (3), with which a valve closing member (12) is associated that divides a low-pressure region (16) at system pressure from a high-pressure region (17). The valve member (3) has at least one first piston (9) and one second piston (11), between which a hydraulic chamber (13) is embodied.

Abstract: The invention refers to a control device for an actuator (1). The device, controlled by a control valve (20; 71; 80, 81), comprises slides (30, 31) to obtain different conditions of the control valve, and these slides (30, 31) are activated by a two-position fluidics solenoid valve (32, 33) to which a set-point instruction is applied (6). The control device comprises a processor (10) to be assured of the response of the solenoid valve depending on the set-point instruction (6) over the full range that the actuator (1) can cover.

Abstract: A position controller including a position transmitter (9) and a control unit (13). The position transmitter detects the actual position of an actuator (7). The control unit (13) is arranged in an ignition-proof enclosure that is separate from the housing of the position transmitter (9). The interface (18) between the control unit (13) and the position transmitter (9) as well as the position transmitter (9) itself—which comprises a magnet (10) and a magnetoresistive sensor (50)—have an inherent electrical safety design.

Abstract: This is a pneumatic actuator for a liquid delivery truck. The actuator can be added to an existing set stop valve without reconfiguring the piping. The same actuator can be used to upgrade several sizes of a rising stem valve. It provides the ability to open and close the valve as well as perform an adjustable low flow function. It works with existing relay logic from a cab mounted or meter mounted electronic preset. The actuator can be used with either an electric or pneumatic switch for setting the low flow position.

Abstract: The present invention relates to a water saving automatic valve which can remarkably reduce electricity consumption and can be operated for a long time by a battery.

Abstract: Method and apparatus for testing an emergency shutdown valve without disrupting the flow of the process during a testing procedure. The apparatus includes an emergency shutdown valve capable of moving about 25% beyond a fully opened position to a fully closed position. The emergency shutdown valve has a coefficient of flow which is equal to or greater than the normal coefficient of flow for the process when the valve is moved about 25% beyond its fully opened position which provides a means for moving the shutdown valve 50% of its total movement without affecting the coefficient of flow for the process. The apparatus also includes a programmable logic controller including a timer and counter, a valve actuator, valve positioner, and an alarm device for controlling the positioning and movement of the shutdown valve during a timed and scheduled shutdown valve testing process without affecting the flow of the process.

Abstract: A position controller including a position transmitter (9) and a control unit (13). The position transmitter detects the actual position of an actuator (7). The control unit (13) is arranged in an ignition-proof enclosure that is separate from the housing of the position transmitter (9). The interface (18) between the control unit (13) and the position transmitter (9) as well as the position transmitter (9) itself—which comprises a magnet (10) and a magnetoresistive sensor (50)—have an inherent electrical safety design.

Abstract: An electromagnetic actuator that detects the position or speed of a drive unit, a valve drive unit and a position or speed sensor that employ the electromagnetic actuator are provided. In the electromagnetic actuator, a magnetic flux generator generates and distributes the magnetic flux. When the magnetic flux changes because of movement of a movable unit, a magnetic path is formed in a magnetic path component that is provided along the direction of movement of the movable unit. The magnetic path passes through a magnetic component. The magnetic flux distributed to the magnetic component is then detected.

Abstract: An electronic faucet has a housing adapted to seat against a support surface and defining an internal barrel having a bottom wall, a side wall and an open top. There is at least one fluid inlet extending through the bottom wall into the barrel, a fluid outlet in the side wall of the barrel, and a valve cartridge seated in the barrel. The cartridge includes a main valve for controlling fluid flow between the at least one inlet and the outlet, a pilot valve and a solenoid operator for opening and closing the pilot valve. A faucet head removably mounted to the housing covers the open top of the barrel, the faucet head including an activator which produces an output signal of a selected duration when approached by a user, and a control circuit which responds to the signal by activating the solenoid operator so as to open the pilot valve which thereupon opens the main valve.

Abstract: Gas flow control apparatus that includes a gas flow control unit having a gas flow adjusting capability and a gas closing capability of selectively opening and closing a gas. A stepping motor is used for driving the gas flow control unit. A drive control unit is provided for controlling the stepping motor. The gas flow control unit is capable of adjusting the gas flow in multiple stages by selectively opening and closing one of a plurality of gas flow adjusting holes and also capable of varying the gas flow in multiple stages by selectively opening and closing one of the plural gas flow adjusting holes according to a number of pulses of the stepping motor.

Abstract: An automatic flusher includes an object sensor. When the object sensor detects a target meeting certain criteria, battery-powered control circuitry causes the flusher's valve to open. By pressing a push button, a user can make the circuit open the flusher's valve. If the circuit has been pressed continually for an extended period, the control circuit assumes a sleep mode, in which its power consumption is negligible. A button actuator in the flusher's container keeps the button pressed while the container is closed. As a consequence, the flusher can be packed with the control circuit's batteries installed without draining those batteries significantly during shipping and storage.

Abstract: An object of the present invention is to provide a control system and a control method for servo valve which can stably continue to control a servo valve when a break occurs in servo coils of a servo valve having a plurality of servo coils. In the present invention, voltages of a plurality of servo coils 3A, 3B, 3C are detected by wire break detecting means individually provided to servo amplifiers 2A, 2B. 2C. The servo amplifiers 2A, 2B. 2C performs wire break detection and wire break compensation.

Abstract: A closed loop pressure controller system that sets, measures and controls the process pressure within a semiconductor process is shown. The system is commonly composed of a pressure sensor to collect the pressure information, a controller box that hosts the control electronics, and a valve to physically affect the conductivity of the inlet or outlet gas line and accordingly the process pressure. The present invention differs from the prior art by using closed-loop motor control of the valve, rather than the method of the prior art, where the valve position is controlled by a stepper motor actuator driven in an open loop fashion. It is demonstrated that the utility of such prior art open-loop configurations is limited by the fact that the achievable precision of the valve position is hindered by static friction in the valve system, and the non-linear character of the torque versus shaft-angle of the motor (among other error components).

Abstract: The present invention is a control valve having an adapter element. The adapter element has at least one adapter element fluid inlet and at least one adapter element fluid outlet and is sealingly engaged with and in fluid communication with a flow valve. The flow valve has a flow valve fluid inlet and a flow valve fluid outlet. The control valve also includes a plunger mechanism sealingly engaged with and in fluid communication with the adapter element. The plunger mechanism has a plunger element in operable communication with the adapter element fluid outlet. The adapter element is a unitary structure.

Abstract: The present invention is a control valve having an adapter element, which is particularly useful as a retrofit for a mechanical flow valve. The adapter element has at least one adapter element fluid inlet and at least one adapter element fluid outlet and is sealingly engaged with and in fluid communication with a flow valve. The flow valve has a flow valve fluid inlet, a flow valve fluid outlet, and a flow valve piston orifice. The adapter element includes a piston orifice plug extension to seal the flow valve piston orifice when the adapter element is engaged with the flow valve. The control valve also includes a plunger mechanism with a plunger element in operable communication with the adapter element fluid outlet. The adapter element is a unitary structure.

Abstract: A feedback mechanism includes a feedback pin, feedback shaft, feedback sensor, and connecting member. The feedback pin displaces interlocked with a motion of an actuating shaft of a valve that opens and closes. The feedback shaft pivots interlocked with displacement of the feedback pin. The feedback sensor outputs a feedback signal, to be used for opening/closing the valve, in accordance with a pivoting amount of the feedback shaft. The connecting member connects the feedback pin and the feedback shaft, and has a cylindrical first bearing through which the feedback pin is inserted, and a cylindrical second bearing through which feedback shaft is inserted.