Butterfly Valve Body materials: Aluminum Bronze. Valve Size Range: from 1 to 24 inches diameter (DN25 to DN600mm). Manufacturing Standards: API, ANSI, BS, DIN, JIS. Valve Connection: wafer, lug, flanged and BW. Pressure: from PN1.6 to PN5.0MPa. Applicable Temperature: from -273°C to +200°C.