Closed spring loaded full bore type high pressure safety valve A42Y-160/320 are used for the equipment and pipeline of the air, N2, H2 mixed gas, etc.

Medium what the working temperature are less than 200º C, A42Y-160P/320P, 160R/320R are used for the equipment and pipeline of the quality with corrode medium whose working temperature are less than 200ºC. Take for extra pressure protection devices.