... projects, urban water supply and drainage, sewage treatment, electric power, petroleum, petrochemical , heat supply,shipbuilding, medicine ... Suitable for handles (DN50~300), gear operators,electric and pneumatic control actuators.Shanxi Ascent Industrial Co.,Ltd (Hongkong ... minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Double flanged butterfly valve cast iron DIN/BS