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Machine translation
1. (WO1979001092) FLUID FLOW REGULATING VALVE AND SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/001092    International Application No.:    PCT/US1979/000304
Publication Date: 13.12.1979 International Filing Date: 04.05.1979
IPC:
A01G 25/16 (2006.01), F16K 15/14 (2006.01), G05D 7/01 (2006.01)
Applicants:
Inventors:
Priority Data:
908026 22.05.1978 US
Title (EN) FLUID FLOW REGULATING VALVE AND SYSTEM
(FR) SOUPAPE ET SYSTEME DE REGLAGE DU DEBIT D"UN FLUIDE
Abstract: front page image
(EN)Fluid distribution systems such as underground sprinkling systems using orifices as flow regulators limit the system to a relatively small range of fluid pressure variation and tend to become blocked by foreign particles. Here a fluid flow regulating valve is inserted in line with a fluid conducting medium to regulate the flow therethrough over a widely varying range of pressure differentials across the valve. The valve is constructed of a body portion (48) having a fluid passageway therethrough terminating at one end in a land (56) having an empirically derived, compound curved section. A compliant reed (58) is affixed to the body portion adjacent the land and operates to press against and conform with the land in response to increasing fluid pressure differential across the reed whereby the rate of fluid flow through the valve remains substantially constant. In an alternative embodiment of the invention, a second similarly shaped land is provided adjacent the reed and opposite the other land to provide bidirectional flow control. The lands are integral portions of the body portion of the valve which is constructed of molded plastic or the like. The reed comprises thin metal shimstock or the like which has been heat staked to the body portion.
(FR)Des systemes de distribution d"un fluide tels que des systemes d"arrosage souterrains utilisant des orifices comme regulateurs de debit limitent le systeme a une gamme relativement petite de differentes pressions du fluide et ont tendance a se boucher avec des corps etrangers. Ici, une soupape de reglage du debit d"un fluide pour regler le debit et obtenir une large gamme de pressions differentielles sur la soupape. La soupape comprend un corps (48) ayant un passage de fluide se terminant a une extremite par un cordon (56) ayant une section courbe dont la configuration est determinee empiriquement. Une languette souple (58) est fixee au corps, adjacente au cordon et fonctionne en se plaquant contre et en epousant la forme du cordon en reponse a une pression differentielle croissante au niveau de la anche ce qui permet de maintenir la vitesse d"ecoulement du fluide a travers la soupape constante. Dans un autre mode de realisation de l"invention, un second cordon de forme semblable est prevu adjacent a la languette et oppose a l"autre cordon pour obtenir une commande du debit bidirectionnelle. Les cordons sont des parties integrales du corps de la soupape qui est faite en plastique moule ou autre. La languette comprend des lamelles fines metalliques fixees a chaud sur le corps.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)