DIN Safety valve - SAFE | ARI Safety valve - SAFE | ARI The Safety Valve - SAFE | ARI is designed for use in the chemical industry, processing industry, and plant manufacturing. It is suitable for handling steam, aggressive gases, vapors, and liquids. The product is classified under eClass-No.: 37010905. View Flanged PN 16 PN 25 PN 40 DIN EN-JL 1040 (GG25) Cast iron EN-JS 1049 1.0619+N 1.4408