Relay valve

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 31/122 (2006.01) B60T 13/24 (2006.01) F16K 11/056 (2006.01)

Patent

CA 2529784

A valve (10) for controlling fluid flow to and from an actuatable device (30) includes a housing (34) defining a chamber (90) for establishing fluid communication between a fluid supply (14) and the actuatable device (30). A spherical ball (120) controls fluid flow through the chamber (90). The housing (34) has a housing seat (84) on which the ball (120) can be seated. A piston (100) movable in the chamber (90) in response to a control input has a piston seat (106) on which the valve element (120) can be seated. The valve (10) has an exhaust condition in which the ball (120) is seated on the housing seat (84) and is spaced apart from the piston seat (106), and a supply condition in which the ball is seated on the piston seat and is spaced apart from the housing seat, and a hold condition in which the ball (120) is seated on the housing seat (84) and the piston seat (106) is seated against the ball (120) simultaneously.

L'invention concerne une valve (10) qui permet de réguler l'écoulement d'un fluide en direction et en provenance d'un dispositif actionnable (30) et qui comprend un logement (34) définissant une chambre (90) afin d'établir une communication fluidique entre une source de fluide (14) et le dispositif actionnable (30). Une sphère (120) régule l'écoulement du fluide à travers la chambre (90). Le logement (34) comprend un siège (84) sur lequel peut reposer la sphère (120). Un piston (100) mobile dans la chambre (90) en réponse à une entrée de commande comprend un siège de piston (106) sur lequel peut reposer l'élément de valve (120). La valve (10) présente un état d'échappement dans lequel la sphère (120) repose sur le siège (84), écartée du siège de piston (106), un état d'alimentation dans lequel la sphère repose sur le siège de piston, écartée du siège, et un état d'attente dans lequel la sphère (120) repose sur le siège (84) et le siège de piston (106) repose contre la sphère (120), simultanément.

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