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WO/2001/077551A2 |
A pressure relief device (20) for a sealed system is provided. The device includes a negative pressure support (24) that is engageable with the system. A seal (22) is disposed between the support and the system such that a negative press...
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WO/2001/075344A1 |
The invention relates to a positioner, especially for a valve that can be actuated by means of a drive. The inventive positioner comprises a locator (9) for detecting the real position of an actuator (7) and a control unit (13) for compa...
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WO/2001/073329A1 |
The invention relates to a commissioning and testing device for a control and regulation system comprising electrically controlled hydraulic and/or pneumatic fluid valves, especially control and regulation systems of machines that are pr...
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WO/2001/065159A1 |
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 hi...
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WO/2001/065160A1 |
The present invention relates to a valve assembly equipped with an electronic timer to control the length of time a valve is opened. A valve assembly comprising a timer to electronically predetermine the operation period, a motor having ...
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WO/2001/059346A1 |
Apparatus for testing an emergency valve (20) in which a valve member (11) is movable by an actuator (10) between an open and a closed position, said apparatus comprising means (40, 13) for initiating emergency closure of the valve and m...
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WO/2001/051836A1 |
A field instrument and system for obtaining pressure, flow and temperature data from a facility. The field instrument includes an enclosure (400) having an opening therein. An integrated analog sensor is sealingly contained within the op...
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WO/2001/044632A2 |
The invention relates to a control valve (10) for a regulating circuit (30) with at least one first control unit (14). Said control unit releases, restricts the flow through or closes a channel (32) to a heat exchanger (16) depending on ...
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WO/2001/042693A2 |
A pressure relief valve detection and monitoring device (5, 55, 155), system, and method are disclosed. The device includes a pressure relief valve (7, 57, 157) having a valve assembly (19, 69, 165). The valve assembly has a first closed...
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WO/2001/025662A2 |
The invention relates to a diagnostic system and method, especially for a valve (2) that can be actuated by a positioner (9) via a drive (6). Said system comprises a sensor (12) for recording structure-related sound and has a device (14)...
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WO/2001/025661A1 |
An improved linearized flow control valve assembly (100) maintains a substantially consistent linear relationship between the input driving device (e.g., motor shaft (12)) and the throughput of fluid through a valved passageway (9) and t...
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WO/2001/021987A1 |
A check valve includes: a valve body (12) having an inlet (14), an outlet (16), and an internal cavity (13), wherein the inlet, outlet and cavity are in fluid communication and define a flow path (F); a disk (21) positioned within the ca...
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WO/2001/021989A1 |
Disclosed is a gas safety valve capable of sensing a gas pressure difference in a gas pipe produced upon gas leakage from gas equipment to thereby generate a visual and audible alarm on the outside of the valve, whereby the safety checki...
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WO/2001/020203A1 |
This invention relates to a multifunctional valve assembly for fluid flow regulation comprising, in association, a main body (200), a first flange (300) and a second flange (400) adjacent to the low and top end of the main body, a suppor...
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WO/2001/018620A1 |
A valve position controller tuning method avoids impact of friction in valve positioner tuning by building a dynamic model of a valve positioner from a monotonic open-loop response of a valve stem position to a change in valve position c...
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WO/2001/014750A2 |
The invention relates to a drive (10) for a control valve, comprising a drive force unit (12), a yoke (14) for connecting to a valve (16) in a fixed manner, a drive spindle (18) for transmitting the movement of the drive force unit to th...
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WO/2001/014777A1 |
The invention relates to a device for checking a safety valve (2) located on a pressure vessel.Said valvehas a cone (4) and a valve seat (6). A spring (8) presses the cone (4) against the valve seat (6). The technical problem of checking...
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WO/2001/014191A1 |
The invention relates to a pressure control valve, especially for electrohydraulic brake systems. The inventive valve comprises a valve body that is arranged in a valve housing (1) and a sensor element (2) for detecting the hydrostatic p...
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WO/2001/013191A1 |
A method for detecting abnormal flow rate by easily detecting an obstruction of an orifice while a fluid pressure flow rate controller using an orifice is controlling the flow rate. The method uses a flow rate controller (FCS) so as to c...
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WO/2001/009540A1 |
The position indicator is applicable to submerged valves forming part of hydraulic systems for decanting of liquids or gas, based on that the corresponding signal which is obtained as a consequence of the state or position (open or close...
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WO/2001/006969A1 |
A drain assembly (14) for a fluid collection container (10) includes a housing (22) attached to the container and defining a cavity therewithin. A stop (42) is located within the cavity and is fixed relative to the housing. A switch (24)...
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WO/2001/006162A2 |
A solenoid valve includes a solenoid coil and a valve stem positionable with respect to the solenoid coil. A transient response produced by the solenoid coil upon varying an energization state of the coil is measured to analyze various c...
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WO/2001/000999A1 |
The invention relates to a positioning device with a servo component (20) comprising a sensor for detecting the servo component. The sensors consist of electrically conductive contacts (16a, 16b) which are molded in the housing (19) of t...
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WO/2001/001432A1 |
An add-on automatic safety gas device for shutting off a gas valve (3) at the detection of a gas leak comprising; a first knob (5), mounted over an existing gas valve knob (7), and affixed to it; a spindle coupled to said first knob (5),...
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WO/2000/079234A1 |
Systems and methods are discussed that monitor wear in seat materials of a valve. One aspect of the present invention includes a system. The system includes sensors to sense the open/closed status of the valve within a desired range. The...
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WO/2000/077430A1 |
A sight glass filter and check valve apparatus (60) for use in a fluid line. The apparatus includes a housing (62), first and second couplers (24, 62) connected to the housing, a sight glass assembly (26), a filter assembly (64), and a c...
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WO/2000/072932A2 |
A water softener valve (30) for controlling water flow to and from a water softener having a cylindrical shaft (1) extending from an inner surface of a piston chamber (21) that fits into a pressure relief port (2) for cleaning debris the...
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WO/2000/073688A1 |
The invention relates to a diagnostic system for a valve that can be actuated by a position controller via a drive. The inventive diagnostic system comprises a device provided for recording, storing and evaluating body sound spectra on t...
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WO/2000/065263A1 |
The invention relates to a pinch valve comprising a housing (1), a sleeve (2), an actuator means (3), pinching jaws or the like valve-closing means (6). The invention is characterized in that the pinch valve has an indicator system adapt...
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WO/2000/057763A1 |
A vacuum cleaner has an electric motor driving an air impeller (68) for creating low pressure and a pump (120) which draws liquid material through an inlet tube from the bottom of a tank (32) and expels it from the tank. A priming appara...
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WO/2000/057143A1 |
The invention relates to measuring devices for measuring the volume flow of flowing media in pipeline systems which emit a signal for control and regulating processes. Electronic volume flow sensors for detecting the volume flow are inte...
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WO/2000/052374A1 |
An emergency shutdown system for a process control system includes an emergency shutdown (ESD) valve (12) and an associated valve actuator (18). An emergency shutdown (ESD) controller (46) provides output signals to the ESD valve in the ...
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WO/2000/050796A1 |
A rotary control valve (10) includes a flow control element (16) having a lower valve shaft (20) rotatably received in a non-magnetic body portion (28). A magnet (26) is coupled with the lower valve shaft (20) and rotatable therewith to ...
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WO/2000/037839A1 |
A pressure regulator (100) utilizes a gauge having rugged internal components. The gauge includes a pin (158) and a bias spring (160). One side of the pressure pin (158) communicates directly with the source pressure (S, 102) and is urge...
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WO/2000/031451A1 |
The invention relates to a method and apparatus for determining the switching pressure of a safety appliance which is adapted to safeguard an installation against exceeding or falling below a gas pressure, wherein an increasing pressure ...
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WO/2000/029812A2 |
According to principles of the present invention, a sensor beam provides a linear or non-linear continuous signal to a computer that translates the signal into a valve position reading. In an illustrative embodiment of the invention, a s...
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WO/2000/024599A1 |
There is a valve assembly for controlling the admission of a fluid such as air into a vehicle tyre or other pressure vessel. The assembly includes a housing (1) with a valve assembly (10) movable therein by a predetermined pressure in sa...
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WO/2000/020787A1 |
A labelled fluid control valve comprises a valve housing, a closure element (4) and a valve spindle. A label ring (36) is forged over an end part of the valve housing so as to leave permanent impressions on the label ring as well as on t...
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WO/2000/009922A1 |
A valve control circuit (44) is disclosed for operating a modulating valve (10) which can be operated between a completely open and a completely closed position. The modulating valve control circuit includes a microcontroller (72) which ...
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WO/2000/009956A2 |
An integrated barrier fluid sealing apparatus (10) includes an annular pressure intensifier (14) surrounding a shaft (12) of an operational device and defining a chamber (18) extending around and along the shaft (12) and containing a bar...
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WO/1999/060369A1 |
A permanently instrumented actuated valve assembly (45) includes at least one internally gauged, permanently instrumentally shaft functioning as a load bearing component through which an actuator (51) drives a valve element. The shaft ha...
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WO/1999/057470A1 |
A system for indicating a position of a piston (221) inside a cylinder of a control valve. The indicator of the present invention has an enclosed shaft (310) which prevents the use of the shaft to tamper with the piston. The position of ...
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WO/1999/056047A2 |
A pressure relief valve monitoring device (8) is provided. The monitoring device includes a sensor input module (10) located proximate to a pressure relief valve (13), a microcontroller located within the sensor (12) input module, and a ...
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WO/1999/047841A1 |
In a position control system for monitoring the position of a valve, a signal transmitter for generating a signal indicative of a valve position includes a shaft (100) coupled to the valve and rotatable to an azimuth angle indicative of ...
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WO/1999/037942A1 |
The invention relates to a cap arranged on the handwheel of a shut-off device fitted with a spindle which is moved incrementally. The inventive cap encloses the spindle which is moved above and beyond the handwheel and which has a height...
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WO/1999/022169A1 |
The invention concerns a method which consists in displacing the valve (1) stem and closure between a position for opening and a position for closing the valve (1), by means of a pneumatic actuator (4) of the valve (1) supplied with pres...
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WO/1999/021066A1 |
The invention relates to the maintenance of safety devices. Valves and similar automatic mechanical safety devices normally maintaining a fixed position are in danger of getting stuck, and consequently may not be fully operable in an eme...
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WO/1999/017042A1 |
A diagnostic test unit for deterministically measuring one or more parameters, such as dead band, dead time, response time, gain, or overshoot, of a process control device that is connected in a process control loop during operation of a...
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WO/1999/017177A1 |
An apparatus for nonobtrusively determining one or more parameters, such as dead band, dead time, or response time of a process control device that is connected on-line in a process control loop includes a measurement unit and a processi...
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WO/1999/015822A1 |
The invention concerns a valve (10) for which a closure element is brought against a valve seat by means of a motor (18), a transmission (20) and a shaft (22). The valve closure point is detected when the valve is closed from an initial ...
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