Relief valves with overflow pressures up to 50 bar are suitable for compressed air, industrial gases and liquids. Available connections: 3/8"GF1/2" GF3/8"NPT-F1/2" NPT-F Flange connections available upon request. The overflow pressure is controlled by rubber (high 15 bar) and AISI 316L pistons (for higher pressures). Products comply with 2014/68 / EU PED Directive. Suitable for ATEX 2014/34 / UE version; Other versions are available upon request. Suitable for use in potentially explosive environment areas: 1, 21, 2, 22 (not applicable to mine and Zone 0).