GA44H-64 double lever safety valve is suitable for equipment and pipelines with working temperature ≤ steam, air and other media with working temperature 450°C, as an overpressure protection device. When the pressure in the equipment and pipeline exceeds the allowable value, the valve automatically opens, and then the full amount is discharged; When the pressure is reduced to the specified value, the valve automatically closes to ensure the safe operation of the equipment and pipeline. The valve outlet has sleeve type and flange type two kinds of selection, which should be checked and confirmed.