Patent ID: 6102070
Filing Date: 2000-08-15
Classification: F16K,Y10S,Y10T

Abstract:
Safety valve for a containment comprising a first tubular body composed of a main branch and a secondary branch connected to said main branch and opening into it via an aperture in the side of said main branch, a piston mounted so that it slides inside said main branch, to free the said lateral aperture from the main branch, an upper stop and a lower stop both mounted inside the main branch and limiting the upward and downward displacement of said piston, the lower section of said main branch being subject to a reference pressure, wherein an additional safety apparatus comprising a second tubular body is positioned under the first tubular body between the lower section of said main branch and said reference pressure, and a pipe connected to the first tubular body above the lower section of the main branch wherein the second tubular body provides a valve member closably communicating the lower section of the main branch with the pipe.