Respiratory protective devices (ICS 13.340.30)

Draft of Egyptian standard ES 4621 for "Respiratory equipment - Open-circuit self-contained compressed air diving apparatus - Requirements, testing and marking" (51 page(s), in English)

This draft standard specifies minimum requirements for    self-contained open-circuit compressed air underwater breathing apparatus and their sub-assemblies to ensure a minimum level of safe operation of the apparatus down to  a maximum depth of 50 m. Worth mentioning is that this draft standard adopts the technical content of  EN 250:2014