Valve Manufacturing standards: API, ANSI, BS, DIN, JIS Butterfly Valve Sealing: metal-seated, resilience-seated Valve Size range: from 1-1/4 inch to 64 inch (DN32mm - DN1600mm); 4 inch, 8 inch Butterfly Valves Pressure: from PN0.1MPa to PN6.4MPa Applicable tempt.: from -40 degrees C to 230 degrees C Butterfly Valve Connection: wafer, flanged (lug type included) Valve Body materials: cast iron, ductile iron, aluminum bronze, carbon steel, stainless steel