A41Y-160、320 type used in ,working temperature≤200℃, type used in , air , ammonia, liquefied petroleum gas equipments or pipelines
1Y-160P/320P、A41Y-160R/320R type used in ,working temperature≤200℃, corrosive gas or liquid media equipments or pipelines, as over-pressure protection device. Connection flange according to JB/T2769-92 standard