JUNCTION PIECE WITH EDGE TO LIMIT COLLAPSE PROPAGATION THAT UNDERSTANDS A DIFFERENTIAL PRESSURE VALVE FOR UNDERWATER FLUID TRANSPORT TUBE

摘要

the invention provides a junction piece that has a differential pressure valve (100) for an underwater fluid transport tube, the valve comprising a valve body (102), an internal chamber (106) being disposed therein opens at one end of the tube and opens at the other end to the outside, with a piston (110) arranged to subdivide the inner chamber into an intake chamber (106a) and an discharge chamber (106b ), the piston being movable between an open position, in which the intake chamber and the discharge chamber communicate with each other, and a closed position in which the intake chamber and the discharge chamber are sealed in relation to each other, a nominal screw (112) screwed into the valve body and includes a hole (114) into which a piston rod (116) slides (110), and at least one hole (118) that opens in the discharge chamber and opens for outside, and a spring (120) regulated d and in order to keep the piston in the closed position below a predetermined threshold pressure inside the intake chamber.