ES2201861B1 - ELECTROVALVULA WITH FLUID REGULATION BY PISTON. - Google Patents

ELECTROVALVULA WITH FLUID REGULATION BY PISTON.

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Publication number
ES2201861B1
ES2201861B1 ES200101112A ES200101112A ES2201861B1 ES 2201861 B1 ES2201861 B1 ES 2201861B1 ES 200101112 A ES200101112 A ES 200101112A ES 200101112 A ES200101112 A ES 200101112A ES 2201861 B1 ES2201861 B1 ES 2201861B1
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ES
Spain
Prior art keywords
fluid
piston
solenoid valve
drain device
inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
ES200101112A
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Spanish (es)
Other versions
ES2201861A1 (en
Inventor
M. Del Pilar Cervera Ruiz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES200101112A priority Critical patent/ES2201861B1/en
Publication of ES2201861A1 publication Critical patent/ES2201861A1/en
Application granted granted Critical
Publication of ES2201861B1 publication Critical patent/ES2201861B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/16—Control of watering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1226—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston the fluid circulating through the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/10—Adhesive or cemented joints
    • F16L13/103—Adhesive joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

Electroválvula con regulación de fluido mediante pistón. Se describe una electroválvula de paso directo, para su instalación en circuitos de alimentación de fluido, constituida por un cuerpo principal que presenta un elemento de desagüe electrónico convencional, y por otra pieza que actúa de cierre o tapa del conjunto, capaz de regular la circulación del fluido mediante un pistón gobernado por el dispositivo de desagüe. En su interior, se encuentra ubicada una pieza intermedia, que además de permitir el paso de fluido, aloja en su interior a un émbolo, a modo de pistón, que obstruye el conducto de entrada empujado por el propio fluido que se aloja en su interior. Y que vuelve a permitir el paso del fluido a través de la electroválvula cuando el dispositivo de desagüe electrónico lo devuelve a su posición original.Solenoid valve with fluid regulation by means of a piston. A direct passage solenoid valve is described, for installation in fluid supply circuits, consisting of a main body that has a conventional electronic drain element, and another part that acts as a closure or cover of the assembly, capable of regulating the circulation of the fluid by means of a piston governed by the drain device. Inside, an intermediate piece is located, which in addition to allowing the passage of fluid, houses inside a piston, as a piston, which obstructs the inlet duct pushed by the fluid itself inside . And that again allows the passage of fluid through the solenoid valve when the electronic drain device returns it to its original position.

Description

Electroválvula con regulación de fluido mediante pistón.Solenoid valve with fluid regulation by piston.

Objeto de la invenciónObject of the invention

La presente invención se refiere a una electroválvula con regulación de fluido mediante pistón, que aporta esenciales características de novedad y notables ventajas con respecto a los dispositivos similares conocidos y utilizados para los mismos fines en el estado actual de la técnica.The present invention relates to a solenoid valve with fluid regulation by means of a piston, which provides  essential novelty features and remarkable advantages with regarding similar devices known and used to the same purposes in the current state of the art.

De manera más concreta, la invención propone el desarrollo de una electroválvula, susceptible de utilizarse en instalaciones con circuitos de alimentación de fluidos por conductos, tales como instalaciones de riego por aspersión, cuyo cuerpo está constituido por un cuerpo principal que presenta un elemento de desagüe electrónico convencional, y por otra pieza que actúa de cierre o tapa del conjuntoMore specifically, the invention proposes the development of a solenoid valve, which can be used in installations with fluid feeding circuits by ducts, such as sprinkler irrigation facilities, whose body is constituted by a main body that presents a conventional electronic drain element, and for another piece that acts of closing or cover of the set

En su interior, dispone de una pieza intermedia, cilíndrica, estanca, que permite el paso de fluido por su parte exterior y aloja en su interior a un émbolo, a modo de pistón, que obstruye el conducto de entrada cuando es empujado por el propio fluido que se aloja en su interior, y que vuelve a permitir el paso del fluido a través de la electroválvula cuando el dispositivo de desagüe electrónico lo devuelve a su posición original.Inside, it has an intermediate piece, cylindrical, waterproof, which allows the passage of fluid through outside and houses inside a piston, as a piston, which clogs the inlet duct when it is pushed by itself fluid that lodges inside, and that allows the passage again of the fluid through the solenoid valve when the device Electronic drain returns it to its original position.

Por lo tanto, la electroválvula que se describe en lo que sigue es capaz de regular la circulación del fluido mediante la utilización de un pistón que está gobernado por el dispositivo de desagüe.Therefore, the solenoid valve described In the following it is able to regulate the circulation of the fluid by using a piston that is governed by the drain device

El campo de aplicación de la presente invención se encuentra comprendido dentro de la industria dedicada a la fabricación de elementos auxiliares y dispositivos para su utilización en instalaciones de riego.The field of application of the present invention It is comprised within the industry dedicated to the manufacture of auxiliary elements and devices for use in irrigation facilities.

Antecedentes y sumario de la invenciónBackground and summary of the invention

En el estado actual de la técnica, las electroválvulas, que permiten la regulación del flujo de fluidos, por ejemplo, en instalaciones de riego por aspersión, incorporan un dispositivo de desagüe accionado eléctricamente que proporciona el desplazamiento de un vástago con el fin de manipular una membrana interna que permite la circulación del fluido. En cualquier caso, dicha membrana es la que permite el paso del fluido cuando es abierta o la que cierra el paso en caso contrario, en ambos casos accionada mediante el dispositivo de desagüe electrónico.In the current state of the art, the solenoid valves, which allow fluid flow regulation, for example, in sprinkler irrigation facilities, they incorporate a electrically operated drain device that provides the displacement of a stem in order to manipulate a membrane internal that allows the circulation of the fluid. In any case, said membrane is what allows the passage of fluid when it is open or the one that closes the step otherwise, in both cases operated by electronic drain device.

Sin embargo, la presente invención propone una nueva configuración de las electroválvulas, la cual sustituye la válvula por un pistón. Dicho pistón impide el paso del flujo de fluido accionado por el empuje del propio líquido, y no por ningún dispositivo electrónico. Aunque, para dejar libre el conducto y permitir el paso del agua, el dispositivo de desagüe electrónico sí que actúa sobre el pistón para su retirada.However, the present invention proposes a new configuration of the solenoid valves, which replaces the valve by a piston. Said piston prevents the flow of fluid driven by the thrust of the liquid itself, and not by any Electronic device. Although, to free the duct and allow the passage of water, the electronic drain device yes which acts on the piston for removal.

Efectivamente, la electroválvula con regulación de fluido mediante un pistón está constituida por un cuerpo que presenta un elemento de desagüe electrónico, y por otra pieza que actúa de cierre o tapa del conjunto. En su interior, se encuentra ubicada una pieza intermedia que además de permitir el paso de fluido aloja en su interior a un émbolo, de modo que constituye un pistón. El émbolo se mueve en el interior cilíndrico de la pieza intermedia, de manera que, cuando se introduce por la entrada de la electroválvula el fluido, el agua se introduce en el pistón desplazando al émbolo hacia el exterior e impidiendo el paso del agua, y es susceptible de volver a su posición original, dejando pasar el fluido a través de la electroválvula hasta su salida, cuando es accionado por el dispositivo de desagüe electrónico.Indeed, the solenoid valve with regulation of fluid by means of a piston is constituted by a body that presents an electronic drain element, and for another piece that acts of closing or cover of the set. Inside, it is located located an intermediate piece that in addition to allowing the passage of fluid houses inside a piston, so that it constitutes a piston. The piston moves inside the cylindrical part of the piece intermediate, so that, when introduced by the entrance of the  electrovalve the fluid, water is introduced into the piston moving the piston outwards and preventing the passage of water, and is likely to return to its original position, leaving pass the fluid through the solenoid valve to its outlet, when operated by the electronic drain device.

Además, la unión y cierre entre el cuerpo, que contiene la salida para el fluido, y la tapa, que contiene la entrada de fluido, de la electroválvula puede realizarse bien mediante rosca o bien mediante una serie de tornillos repartidos por todo el contorno, aunque en ambos casos el cierre debe resultar lo suficientemente fuerte para soportar la presión del fluido.In addition, the union and closure between the body, which It contains the outlet for the fluid, and the cap, which contains the fluid inlet, the solenoid valve can be performed well by thread or by a series of distributed screws around the contour, although in both cases the closure should result strong enough to withstand fluid pressure.

Por último, cabe destacar la posibilidad de dotar, tanto al orificio de entrada como al de salida, en su superficie interna, de una rosca o de superficie lisa, con el fin de poder unirlos convenientemente a los diferentes tipos de conductos de llegada y partida a la electroválvula del fluido, según la necesidad de cada caso particular.Finally, the possibility of provide both the entrance and the exit hole in its internal surface, of a thread or smooth surface, in order of being able to conveniently link them to the different types of arrival and departure ducts to the fluid solenoid valve, according to The need for each particular case.

Breve descripción de los dibujosBrief description of the drawings

Estas y otras características y ventajas de la invención, se pondrán más claramente de manifiesto a partir de la descripción detallada que sigue de una forma preferida de realización, tomada únicamente a título de ejemplo ilustrativo y no limitativo, con preferencia a los dibujos que se acompañan, en los que:These and other features and advantages of the invention, will become more clearly apparent from the detailed description that follows in a preferred way of embodiment, taken for illustrative purposes only and not limiting, with preference to the accompanying drawings, in the that:

La Figura 1 muestra una vista esquematizada, parcialmente seccionada, de una electroválvula con regulación de fluido mediante un pistón, objeto de la invención.Figure 1 shows a schematic view, partially sectioned, of a solenoid valve with regulation of fluid by means of a piston, object of the invention.

Descripción de la realización preferida de la invenciónDescription of the preferred embodiment of the invention

Para llevar a cabo la descripción detallada de la realización preferida de la invención, se hará referencia permanente en lo que sigue a la Figura única de los dibujos anexos, en la que aparece representada una vista en alzado, parcialmente seccionada para una mayor claridad del dibujo y una mejor comprensión del conjunto, de una electroválvula cuyo cuerpo está constituido por un cuerpo (1) principal, que posee el orificio (7) de salida del fluido y el alojamiento (8) convencional para el acoplamiento del correspondiente dispositivo de desagüe electrónico, por una tapa (2) o elemento de cierre, que posee el orificio (6) de entrada de fluido, y por un elemento (3) intermedio, ubicado en el interior del conjunto, de configuración cilíndrica estanca con aspas (9) longitudinales externas que permiten el paso del fluido, en cuyo interior se aloja un émbolo (5).To carry out the detailed description of the  preferred embodiment of the invention, reference will be made permanent in what follows the unique Figure of the attached drawings, in which an elevation view is shown, partially sectioned for greater clarity of drawing and better understanding of the set, of a solenoid valve whose body is constituted by a main body (1), which has the hole (7) fluid outlet and conventional housing (8) for the coupling of the corresponding electronic drain device, by a cover (2) or closing element, which has the hole (6) of fluid inlet, and by an intermediate element (3), located in the inside the set, cylindrical configuration sealed with external longitudinal blades (9) that allow the passage of fluid, inside which a piston (5) is housed.

Dicho émbolo (5), además de estar conectado de manera convencional al dispositivo de desagüe electrónico, posee en su base un orificio (10) central por el cual se permite la entrada o salida de líquido, y está debidamente sujeta mediante una goma (4) perfectamente encajada. Sus dimensiones son tales que, una vez está totalmente desplazado en su recorrido por el pistón, es capaz de obstruir el orificio de entrada de fluido.Said plunger (5), in addition to being connected to Conventional way to the electronic drain device, possesses in its base a central hole (10) through which entry is allowed or liquid outlet, and is properly secured by a rubber (4) perfectly fit. Its dimensions are such that, once it is fully displaced in its travel by the piston, it is capable of clog the fluid inlet hole.

El funcionamiento básico de la electroválvula, descrita en lo que antecede, es el siguiente:The basic operation of the solenoid valve, described above, is as follows:

El fluido, al entrar por el orificio (6) de entrada, se introduce a su vez por el orificio (10) del émbolo (5) en el interior de la pieza (3) intermedia, por lo que el émbolo (5) es desplazado hacia el exterior del pistón, y por lo tanto, provoca la obstrucción del paso del fluido. Y para permitir el paso del fluido se procede a devolver a su posición de reposo al émbolo (5), accionándolo mediante el dispositivo de desagüe correspondiente de la electroválvula, de manera que, el fluido pasa a través de las aspas (9) longitudinales de la pieza (3) intermedia hasta llegar al orificio (7) de salida.The fluid, entering through the hole (6) of input, in turn is introduced through the hole (10) of the plunger (5) inside the intermediate piece (3), so that the plunger (5) is displaced outward from the piston, and therefore, It causes the obstruction of the passage of the fluid. And to allow the passage of the fluid, the piston is returned to its resting position (5), by actuating it through the drain device corresponding of the solenoid valve, so that the fluid passes through the longitudinal blades (9) of the intermediate piece (3) until you reach the exit hole (7).

Tal como se ha mencionado, la electroválvula está compuesta por un cuerpo (1) principal y por una tapa (2) o elemento de cierre. Su unión, en la realización preferida, se ha realizado mediante rosca dotándolos de aristas helicoidales, tal como se aprecia en la Figura. Sin embargo, igualmente efectiva sería la realización de la unión y cierre de las piezas mediante cuatro o más tornillos repartidos por todo el contorno, asegurando la efectividad del cierre incluso bajo fuertes presiones del fluido.As mentioned, the solenoid valve is  composed of a main body (1) and a cover (2) or closing element. Their union, in the preferred embodiment, has been made by thread providing helical edges, such as seen in Figure. However, equally effective would be the realization of the union and closing of the pieces by four or more screws scattered around the contour, ensuring the effectiveness of the closure even under strong pressures from fluid.

Por último, ambos orificios (6, 7), de entrada y de salida, pueden tener su superficie interna tanto roscada como totalmente lisa, según necesidad, y por lo tanto, se les dota de la posibilidad de unión con diferentes tipos de conductos de llegada y partida de fluido a la electroválvula, bien sea en el primer caso enroscándolos o bien en el segundo caso pegándolos.Finally, both holes (6, 7), input and output, they can have their internal surface both threaded and totally smooth, as needed, and therefore, they are endowed with the possibility of joining with different types of arrival ducts and fluid flow to the solenoid valve, either in the first case by twisting them or in the second case by gluing them.

No se considera necesario hacer más extenso el contenido de esta descripción para que un experto en la materia pueda comprender su alcance y las ventajas derivadas de la invención, así como desarrollar y llevar a la práctica el objeto de la misma.It is not considered necessary to make the content of this description for a subject matter expert can understand its scope and the advantages derived from the invention, as well as develop and implement the object of the same.

No obstante, debe entenderse que la invención ha sido descrita según una realización preferida de la misma, por lo que puede ser susceptible de modificaciones sin que ello suponga alteración alguna del fundamento de dicha invención, pudiendo afectar tales modificaciones, esencialmente, a la forma, al tamaño y/o a los materiales de fabricación del conjunto o de sus partes.However, it should be understood that the invention has been described according to a preferred embodiment thereof, so which may be subject to change without implying any alteration of the basis of said invention, being able to affect such modifications, essentially, shape, size and / or to the manufacturing materials of the set or its parts

Claims (4)

1. Electroválvula con regulación de fluido mediante pistón, susceptible de ser utilizada en instalaciones destinadas a dejar pasar un determinado fluido a través de un conducto, tales como instalaciones de riego por aspersión, que se caracteriza porque está constituida a partir de un cuerpo (1) principal, dotado de un orificio (7) de salida del fluido y de un alojamiento (8) convencional para el acoplamiento del correspondiente dispositivo de desagüe electrónico; una tapa (2), o elemento de cierre, que posee el orificio (6) de entrada de fluido; y un elemento (3) intermedio, ubicado en el interior del conjunto, de configuración cilíndrica estanca, con aspas (9) longitudinales externas que permiten el paso del fluido y su fijación en el interior de la electroválvula, en cuyo espacio interno se aloja un émbolo (5), el cual, además de estar conectado de manera convencional al dispositivo de desagüe electrónico, posee en su base un orificio (10) central por el cual se permite la entrada del fluido que lo desplaza hacia el exterior de la pieza (3) intermedia haciendo que obstruya completamente el orificio (6) de entrada hasta que es accionado por el dispositivo de desagüe electrónico y devuelto a su posición original dejando que el fluido alcance el orificio (7) de salida pasando a través de las aspas (9) longitudinales de la pieza intermedia.1. Solenoid valve with fluid regulation by means of a piston, which can be used in installations intended to allow a certain fluid to pass through a conduit, such as sprinkler irrigation installations, characterized in that it is constituted from a body (1 ) main, equipped with an orifice (7) of fluid outlet and a conventional housing (8) for coupling the corresponding electronic drain device; a cover (2), or closure element, which has the fluid inlet hole (6); and an intermediate element (3), located inside the assembly, with a cylindrical seal configuration, with external longitudinal blades (9) that allow the passage of the fluid and its fixation inside the solenoid valve, in which an internal space is housed piston (5), which, in addition to being conventionally connected to the electronic drain device, has a central hole (10) at its base through which the entry of the fluid that moves it outside the part is allowed ( 3) intermediate causing it to completely obstruct the inlet hole (6) until it is actuated by the electronic drain device and returned to its original position allowing the fluid to reach the outlet hole (7) passing through the blades (9 ) longitudinal of the intermediate piece. 2. Electroválvula con regulación de fluido mediante pistón, según la reivindicación 1, que se caracteriza porque la unión entre el cuerpo (1) principal y la tapa (2) se efectúa bien mediante rosca, dotándolos a ambos de aristas helicoidales, o bien mediante una pluralidad de tornillos repartidos por todo el contorno, asegurando con ello la efectividad del cierre incluso bajo condiciones de fuertes presiones del fluido.2. Solenoid valve with fluid regulation by means of a piston, according to claim 1, characterized in that the connection between the main body (1) and the cover (2) is effected either by means of a thread, providing both of them with helical edges, or by a plurality of screws distributed throughout the contour, thereby ensuring the effectiveness of the closure even under conditions of strong fluid pressures. 3. Electroválvula con regulación de fluido mediante pistón, según la reivindicación 1, que se caracteriza porque ambos orificios (6, 7), de entrada y de salida, tienen su superficie interna roscada, de manera que son susceptibles de unión con conductos de llegada y partida de fluido, a y desde la electroválvula, con extremos roscados complementariamente.3. Solenoid valve with fluid regulation by means of a piston according to claim 1, characterized in that both inlet and outlet holes (6, 7) have their internal surface threaded, so that they are capable of joining with inlet ducts and fluid starting, to and from the solenoid valve, with complementary threaded ends. 4. Electroválvula con regulación de fluido mediante pistón, según la reivindicación 1, que se caracteriza porque ambos orificios (6, 7), de entrada y de salida, tienen su superficie interna lisa, de manera que son susceptibles de unión con conductos de llegada y partida de fluido, a y desde la electroválvula, asimismo con extremos lisos, solidarizándolos mediante pegado.4. Solenoid valve with fluid regulation by means of a piston, according to claim 1, characterized in that both inlet and outlet ports (6, 7) have their smooth internal surface, so that they are capable of joining with arrival ducts and starting fluid, to and from the solenoid valve, also with smooth ends, joining them together by gluing.
ES200101112A 2001-05-16 2001-05-16 ELECTROVALVULA WITH FLUID REGULATION BY PISTON. Expired - Fee Related ES2201861B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200101112A ES2201861B1 (en) 2001-05-16 2001-05-16 ELECTROVALVULA WITH FLUID REGULATION BY PISTON.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200101112A ES2201861B1 (en) 2001-05-16 2001-05-16 ELECTROVALVULA WITH FLUID REGULATION BY PISTON.

Publications (2)

Publication Number Publication Date
ES2201861A1 ES2201861A1 (en) 2004-03-16
ES2201861B1 true ES2201861B1 (en) 2005-05-16

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5313872A (en) * 1993-04-28 1994-05-24 Foster Raymond K End of stroke cushion for a linear hydraulic motor
JPH0932944A (en) * 1995-07-24 1997-02-07 Hideo Sunaga Irrigation water automatic feeding device
DE19609257C2 (en) * 1996-02-28 1998-08-20 Mannesmann Ag Pipe connection
EP0890771A3 (en) * 1997-07-11 2000-05-31 Dürr Systems GmbH Threaded joint for pipes
IT1293839B1 (en) * 1997-08-08 1999-03-10 Cazzaniga Spa FITTING FOR THE CONNECTION OF SMOOTH PIPES TO THREADED CONNECTIONS OF HYDRAULIC AND SIMILAR EQUIPMENT
DE19947900A1 (en) * 1999-05-11 2000-11-16 Continental Teves Ag & Co Ohg Valve assembly, especially for hydraulic braking system with wheel slip regulation, has flow cross-section between valve pin piston that is closed by electrical actuation of valve pin

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