Patent ID: 8973896
Filing Date: 2015-03-10
Classification: F16K,F16L,Y10T

Abstract:
1. A discharge and purging device, adapted for limiting a pressure of a fluid occupying an inner volume of a connecting endpiece connected to a duct and allowing lowering of a residual pressure of the fluid upon coupling, the device comprising: a valve or a valve actuation piston, an inner enclosure opening out on a front face of the valve or of the valve actuation piston, the front face cooperating with a valve actuation piston or a valve of an additional connecting endpiece, and an obturator moveable in translation in the enclosure along a central axis between: a first chamber defined when the obturator is in its closed position, between walls of the enclosure, the obturator, the first seal area and a second seal area defining a second seal section located opposite the front face relative to the first seal area, a communication passage between the first chamber and the inner volume of the connecting endpiece, means for returning the obturator to its closed position, and a second chamber defined between walls of the enclosure, the second seal area and the obturator the second chamber being isolated from the inner volume of the connecting endpiece and from the first chamber, and wherein the first seal section is smaller than the second seal section.