195 BUTTERFLY VALVE TYPE 56, 75 Cv Value (%) Butterfly Valve Gate Valve GATE VALVE (P-Type) Cv Value (%) Opening Degree (%) GATE VALVE (S-Type) Cv Value (%) Opening Degree (%) BUTTERFLY VALVE TYPE 57, TYPE 57L (Lug Style) Cv Value (%) PDCPD BUTTERFLY VALVE Cv Value (%) Opening Degree (%) BUTTERFLY VALVE TYPE 55 Cv Value (%) Opening Degree (%)