Patent ID: 6708772
Filing Date: 2004-03-23
Classification: A62C,F16K

Abstract:
A container valve for a stationary fire extinguishing system comprising:a valve body with an inlet channel and an outlet channel, a valve seat arranged between said inlet channel and said outlet channel and a tripping chamber axially opposed to said valve seat; a closing piston movable within said valve body axially relative to said valve seat, said closing piston having a first end and an opposite second end, said first end axially sealing said tripping chamber and defining therein a pressure surface, said second end having a sealing surface thereon with which it can be pressed against said valve seat, said closing piston further including a pressure compensation channel via which said tripping chamber is in pressure communication with said inlet channel when said closing piston sits on said valve seat; a closing spring which is associated with said closing piston so that it exerts a spring force on said closing piston in the direction of said valve seat; a tripping device in communication with said tripping chamber, said tripping device being capable of generating a pressure drop in said tripping chamber; a limit stop for said closing piston in said valve body, said limit stop defining an end position for said closing piston when a differential pressure lifts the closing piston from said valve seat and moves it away from the latter; and a sealing element movable between a sealing position and a filling position, wherein: in said sealing position, said sealing element seals off said pressure compensation channel in said closing piston when the latter is in its end position; and in said filling position, said sealing element opens said pressure compensation channel in said closing piston when the latter is in its end position.