value operator The Butterfly Valve is iron body,disc is stainless steel,ductile iron&bronze,lever and gearbox operator. value operatorModel NumberJB-20-1Body MaterialironPressure Grade1.0MPa/1.6MPaSuitable temperature-50 to 200Applytap waterport size90temperturenormal temperatureFlow mediawaterPowermanual We manufacture valves in standard of GB, ANSI, JIS etc, or according to our client’s ...