Patent ID: 6637456
Filing Date: 2003-10-28
Classification: F16K,Y10T

Abstract:
A safety valve, in particular for low pressures and aggressive media, with an inlet ending at the top in a valve seat upon which lies in a sealing manner a weight-loaded sealing body, whereby a certain overpressure below the valve seat and/or a certain under pressure above the valve seat causes the sealing body to lift, characterized in that:the sealing body forms at its upper end a shaft projecting vertically upward which is guided along or within a vertical part fixed immovably to the valve body, and that alone or on the shaft are fastened two or more detachable weights, the upward projecting shaft comprises a vertical inner bore open at the upper end in which lies a rod fixed immovably to the valve body, the rod is jacketed with a material resistant to aggressive media, the shaft annular weights lie one above the other surrounding the shaft, and are jacketed with or consist of a material resistant to aggressive media, and above the weights lies a disc, particularly of a material resistant to aggressive media, which is secured on the shaft by a round cord or a circlip.