Pressure relief valve for containers suited for the pneumatic loading of loose solid products, in particular silos

A pressure relief valve (1) for containers suited for the pneumatic loading of loose solid products, the valve comprising a valve body (2) having a first end, which pneumatically communicates with the inside of a container (3), and a second end, which is associated to a flow control organ (7), which is subject to the action of corresponding closing elastic means (8), said flow control organ (7) periodically establishing a fluid communication between said valve body (2) and a duct (22) that communicates with the outside;

• wherein the valve is characterized in that at least one portion of said duct (22) that communicates with the outside is configured to be elastically deformed by the pressure difference existing between the inside of said valve body (2) and the inside of the duct (22) itself to form a recess (24) located along a wall of the duct (22) and which projects towards an interior of the duct (22).

A pressure relief valve (1) for containers suited for the pneumatic loading of loose solid products, the valve comprising:

• a valve body (2) having a first end and a second end, wherein the second end is associated with a flow control organ (7), which is subject to the action of corresponding closing elastic means (8), said flow control organ (7) periodically establishing a fluid communication between said valve body (2) and a duct (22) that communicates with the outside;
• and
• wherein the valve is characterized in that at least one portion of said duct (22) that communicates with the outside is configured to be elastically deformed by the pressure difference existing between the inside of said valve body (2) and the inside of the duct (22) itself to form a recess (24) located along a wall of the duct (22) and which projects toward an interior of the duct (22).