Overpressure safety valve for gas bottle - is held open by permanent magnet with screw mechanism allowing manual adjustment

摘要

The automatic shut off valve has a cylindrical body opened at both ends. The cylinder contains a floating valve (3) which allows the gas to pass through until the pressure closes it against the seat (12). The permanent magnet (2) holds the valve off its seat until the pressure increases sufficiently to close it. The plug (7) with the coil spring (16) allows for manual control of the valve.