A metering valve

Details A metering valve A metering valve

F - Mech Eng,Light,Heat,Weapons

16

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F16K 3/00 (2006.01) F16K 21/10 (2006.01) F16K 21/12 (2006.01) F16K 21/16 (2006.01)

Patent

CA 2005319

A metering valve is provided having a piston assembly mounted for movement between open and close modes. The piston assembly is biased to assume a close mode. The piston assembly assumes an open mode only when a predetermined external force is applied to a valve actuating element forming a component of the metering valve. When the external force is removed, the piston assembly automatically returns to the close mode. The rate of movement of the piston assembly during a first segment of travel from the open mode to the close mode is substantially slower than the rate of movement during a second segment of the travel.

Soupape de réglage sur laquelle un piston est monté de manière à pouvoir passer de la position ouverte à la position fermée. Le piston est incliné pour adopter la position fermée, et passe en position ouverte uniquement lorsqu'une pression extérieure prédéterminée est appliquée à un élément de commande faisant partie intégrante de la soupape de réglage. Lorsque la pression extérieure est enlevée, le piston retourne automatiquement en position fermée. La vitesse de déplacement du piston pendant un premier segment de course de la position ouverte à la position fermée est beaucoup plus lente que son rythme de déplacement pendant un deuxième segment de course.

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