... : Class800/Class900/Class15008: Connetion ends: SW/BW/THREAD ENDS9: Material: A105, F11, F22, LF2, 304, 304L, 316L, 316L, 20# alloy, Monel ... and Hast. etc.10: Dics and Stem: A105,SS304, SS316,SS304L,SS316L,SS410,SS416.etc.11: Operation: Manual12 ... of CE, API 6D, API 607, TS and ISO 9001 A105 threaded forged check valve