... certificate Standard:DIN,BS,API,JIS,MSS etc Electric actuator butterfly valveFeature:1) Standard for face to face: DIN, BS, API ... Profile: We, Tianjin Tanggu Tianshun Valve Co., Ltd., have manufactured butterfly valves for more than 10 years. We have manufactured kinds ... of butterfly valves for your choose including Wafer, Lug, U type, D341 ...