Release valve for fire protection systems, fire protection system and relative activation method

Fire protection system comprising an extinguishing gas source connected to a release valve (100) for fire protection systems, said release valve (100) for fire protection systems consisting of a tubular body (1) with a first end and a second end, and comprising:

• coupling means with an extinguishing gas source at a first pressure, arranged at said first end;
• and outlet (12), arranged at said second end;
• a pressurization inlet (11), arranged in a position between said coupling means and said outlet (12) and able to be connected to pressurizing means at a second pressure, greater than said first pressure;
• a rupture disc (2), arranged in a position between said pressurization inlet (11) and said outlet (12) and configured to open at said second pressure;
• and a non-return device (3), arranged in a position between said coupling means and said pressurization inlet (11), said non-return device (3) being configured to allow a passage of fluid in the direction from said coupling means towards said pressurization inlet (11) and prevent a passage of fluid in the direction from said pressurization inlet (11) towards said coupling means, wherein said tubular body (1) comprises a filling inlet (10) arranged in a position between said coupling means and said non-return device (3), wherein said extinguishing gas source is connected to said release valve (100) for fire protection system, by means of said coupling means of said release valve (100) for fire protection systems, and pressurizing means connected to said release valve (100) for fire protection systems by means of said pressurization inlet (11) of said release valve (100) for fire protection systems, said pressurizing means being configured to transmit, to said release valve (100) for fire protection systems, a pressure greater than or equal to the opening pressure of said rupture disc (2).

Method for activating a fire protection system, said fire protection system comprising an extinguishing gas source connected to a release valve (100) for fire protection systems, said release valve (100) for fire protection systems consisting of a tubular body (1) with a first end and a second end, and comprising:

• coupling means with an extinguishing gas source at a first pressure, arranged at said first end;
• an outlet (12), arranged at said second end;
• a pressurization inlet (11), arranged in a position between said coupling means and said outlet (12) and able to be connected to pressurizing means at a second pressure, greater than said first pressure;
• a rupture disc (2), arranged in a position between said pressurization inlet (11) and said outlet (12) and configured to open at said second pressure;
• and a non-return device (3), arranged in a position between said coupling means and said pressurization inlet (11), said non-return device (3) being configured to allow a passage of fluid in the direction from said coupling means towards said pressurization inlet (11) and prevent a passage of fluid in the direction from said pressurization inlet (11) towards said coupling means, wherein said tubular body (1) comprises a filling inlet (10) arranged in a position between said coupling means and said non-return device (3), wherein said extinguishing gas source is connected to said release valve (100) for fire protection systems by means of said coupling means of said release valve (100) for fire protection systems, and pressurizing means connected to said release valve (100) for fire protection systems by means of said pressurization inlet (11) of said release valve (100) for fire protection systems, said pressurizing means being configured to transmit to said release valve (100) for fire protection system, a pressure greater than or equal to the opening pressure of said rupture disc (2), wherein said pressurizing means are activated to transmit, to said release valve (100) for fire protection systems, a pressure greater than or equal to the opening pressure of said rupture disc (2), thus generating the rupture of said rupture disc (2) and allowing the flow of extinguishing gas through said release valve (100) for fire protection systems, from said extinguishing gas source towards said outlet (12) of the release valve (100) for fire protection systems.