Spring full bore type with lever safety valve

A28H-10C, A28Y-10P, A28Y-16P, A28Y-25P, A28Y- 40P

A28Y-16C, A28Y-16R, A28Y-25R, A28Y-40R

A28H type are used for the equipment and pipeline of the air,N₂,H₂ mixed gas vapor etc. medium what the working temperature are less than 200℃.A28Y-P/10R₈ type are used for the equipment and pipeline of the quality with corrode medium what the working temperature are less than 200℃.Take for extra pressure protection devices.