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We need a concentric butterfly valve DN2000 vulcanized, flanged, series 13, with disc AISI304, prepared for electric actuator, but we need to have this minimum values: Coeficientes Kv (m³/h) considerados para a válvula de borboleta DN2000Angulo de abertura da valvula (o)10 20 30 40 50 60 70 80 90? 12868 20227 36777 62123 103164 165201 258823 321700 For approve your butterfly valve DN2000, we need to make a study, can you please send to us the information ASAP:- Technical valve data sheet- Kv flow factor chart from 5º to 90º butterfly opening angle- Head loss chart from 5º to 90º butterfly opening angle