Valve Manufacturing standards: API, ANSI, BS, DIN, JIS Butterfly Valve Sealing: resilience-seated(PTFE, RPTFE), metal-seated Valve Size range: from 1-1/4 inch to 64 inch (DN32mm - DN1600mm) Pressure: 150lbs,300lbs,600lbs Applicable tempt.: from -40 degrees C to 425 degrees C Butterfly Valve Connection: flanged, wafer(lug type included) Valve Body materials: carbon steel, stainless steel, alloy steel