Electric actuator butterfly valve DN50-1200 or 2-48'' PN10/16/25 With CE ... certificate Standard:DIN,BS,API,JIS,MSS etc Electric actuator butterfly valve Feature:1) Standard for face to face: DIN, BS, API ... (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-lug ...