Safety valve
AssigneeITT Manufacturing Enterprises, Inc.
InventorManfred Sett
Life of this patent
Estimating the term…
Abstract
The invention concerns a safety valve, in particular for low pressures and aggressive media, with an inlet which ends at the top in a valve seat upon which lies in a sealing manner a weight-loaded sealing body. A certain overpressure below the valve seat and/or a certain underpressure above the valve seat causes the sealing body to lift. At its upper end, the sealing body forms a shaft projecting vertically upward which is guided along or in a vertical part fixed immovably to the valve body. Fastened along or on top of the shaft are two or more weights, particularly detachable weights.
Claims5
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.
Dependencies are inferred from the claim text.