... B7, B7M, B8, B8M17NutA194 2H, 2HM, 8, 8M18Body GasketPTFE, SS304+Graphite, SS316+Graphite19BallA105+ENP, A182 F6, F304, F304L, F316, F316L, F5120Lower ... , F316, F316L, F5124ScrewA193 B7, B825Seat SealingGraphite26Gland GasketSS304+Graphite27Bottom Cover GasketSS304+Graphite Yongjia Weilan Flow Control Equipment Co., LTd. , founded in 1989 ...