Patent ID: 8720856

Claim:
Valve comprising an annular sealing gasket made of flexible sheet-metal which is interposed between a body ( 1 ) and a closure member ( 2 ), characterised in that the gasket: is in two pieces ( 5 ) and ( 6 ); each piece ( 5 ) or ( 6 ), which is in a single piece, is fixed by means of a fixing part ( 11 ), one to the body ( 1 ), the other to the closure member ( 2 ); each piece ( 5 ) or ( 6 ) has a curved part ( 12 ), the curved part of one of the pieces facing towards the right and that of the other piece facing towards the left; and the two pieces ( 5 ) and ( 6 ) are fixed within the body ( 1 ) and within the closure member ( 2 ) in such a way as to come into contact via the convex face of their curved part ( 12 ).