Closure device of a second-stage regulator for scuba divers

A second stage regulator for scuba divers with a closure device of said regulator, said regulator comprising a regulator body (1) with an inlet conduit (2) for connection to a first-stage regulator which supplies a gas mixture can breathe at constant pressure, an outlet conduit (3) for connection to a mask user and a hole (9) closed by a deformable diaphragm (8), said closure device comprising a frame lock (4) locking said diaphragm in said opening (9) and being characterized in that said frame lock (4) is pivotally connected to the regulator (1) body and are provided with means (12, 14, 15) to secure said frame to said body the regulator comprising a connected bracket (12) pivotally to said frame (4) and attachable by pressure to said regulator body (1).