Patent ID: 8511328

Claim:
A T-pipe piece ( 1 ) designed for transfer of fluids under high pressure through a main passage ( 1 a ) thereof, a branch pipe ( 1 b ) remains in standby use position, said T-pipe piece comprising: said branch pipe ( 1 b ) having an opening being sealed by a material which is continuous with the main passage ( 1 a ) and having a seal, and when required, forming an opening and fluid flow in the branch pipe ( 1 b ) while the main passage ( 1 a ) is in production and remains under full pressure; and the seal includes a metal diaphragm ( 2 ) which remains in contact with the fluid flowing in the main passage ( 1 a ), which metal diaphragm ( 2 ) being thinner than a wall thickness of the T-pipe piece and being, in use, supported by a solid body of a plug ( 3 ) inserted in the branch pipe.