1.API 16A certificate 2.Suitable for H2S service 3.Strong, simple construction 4.Compact body saves space Spherical blowout preventers (API 16A series) Working path ( mm ) 180,230,280,346,426,540Working pressure ( PSI ) 2M,3M,5M,10Mmain material AA, BB, CC, DD, EE, FFWorking temperature of L, P, R, S, T, UProduct specification level PSL1, PSL2, PSL3Product performance level PR1, PR2Working medium ...