... Standard:DIN,BS,API,JIS,MSS etc Electric actuator butterfly valve Feature:1) Standard for face to face: DIN ... centerline double flanged 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. ...