flange connection butterfly valve 1)Size:DN50-1200 2)PN:1.0/1.6MPa 3)ISO9001:2008, 27/93 EC 4)Established in 1987 Double flange butterfly valveSizeRange:DN25~DN3500 Class Range:150LB-900LB Structure:butterfly valveelectric double flanged eccentric butterfly valveSize Range: 1/2 Inch-24 Inch/DN15~DN3500Class Range: 150LB-900LB/PN1.0~PN6.4Construction: Body And Bonnet Available In Carbon Steel, In ...