The spring micro-opening external thread safety valve is suitable for equipment and pipelines with air, ammonia, petroleum gas and other media with an operating temperature of ℃. The type is suitable for equipment and pipelines containing corrosive gases or liquids with a working temperature of ℃. The type is suitable for equipment and pipelines such as liquefied gas and petroleum gas with a working temperature of ℃ as an overpressure protection device. When the pressure in the equipment and pipelines exceeds the allowable value, the valve automatically opens and then discharges the entire amount. When the pressure drops to the specified value, the valve automatically closes to ensure the safe operation of the equipment and pipelines. Working temperature
Type ℃ Type ℃ Type ℃～℃
Applicable media
Type is suitable for air, ammonia, petroleum gas, water, etc. Type is suitable for corrosive gases or liquids, suitable for liquefied petroleum gas
Main overall dimensions
Nominal diameter/
Dimensions
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Qigao A21H spring micro-opening external thread safety valve