flange electric butterfly valve SizeRange: 1/2 Inch-24 Inch/DN15~DN600 Class Range: 150LB-900LB flange electric butterfly valveSize Range: 1/2 ... We can produce gate, globe, check, ball and butterfly valves with the materials of ductile iron, carbon steel, alloy steel, stainless ... to order. Our products are designed and manufactured in accordance with the standards of GB, ASME, ANSI, API, BS, DIN, ...