... bronze or other materials you require. c) Seat: EPDM, NBR, PTFE, VITON d) Stem: Carbon steel, SS304, SS416, SS4316) ... without leakage Company Profile: We, Tianjin Tanggu Tianshun Valve Co., Ltd., have manufactured butterfly valves for more ... butterfly valve), D343(double eccentric flanged butterfly valve), Grooved end type, Double disc wafer check valve, Flapper check valve, Eccentric plug valve, ...