... life 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, Half ... like manual ( lever, handweel or gearworm), electric and pneumatic actuator and so on. Our brand is TST. We ...