Use:

A41Y-160/320 type are used for the equipment and pipelines with such media as air, N2-H2 mixed gas, and water at a working temperature less than 200℃.A41Y-160P/R、A41Y-320P/R type are used for the equipment and pipelines containing corrosive gases or liquids at a working temperature less than200℃ as an overpressure protection device.Flange connecting dimensions comply with standard of JB/T2769.