... BB, CC, DD, EE, FF, HHThe level of specification:PSL1~ 4The level of performance:PR1~ 2Nominal diameter:21 /16" to 41 ... , BB, CC, DD, EE, FF, HHThe level of specification: PSL1~ 4The level of performance: PR1~ 2Nominal diameter:21 /16" to 41 ... marine platform.Integral valve body adopts the forging structure.Has the advantages of compact structure, little space occupation, little connecting piece,Good ...