DA41F46/P Lining Type Butterfly Valve
Design：HG/T 3704 / API 609 Structure：GB/T 12221 / API 609 Flange：HG/T 20592 / ASME B16.5 Pressure：GB/T 13927 / API 598
DA41F46 Fully Lined Butterfly Valve
Design：HG/T 3704 / API 609 Structure：GB/T 12221 / API 609 Flange：HG/T 20592 / ASME B16.5 Pressure：GB/T 13927 / API 598
D371F46 Semi-lined Butterfly Valve
Design：HG/T 3704 / API 609 Structure：GB/T 12221 / API 609 Flange：HG/T 20592 / ASME B16.5 Pressure：GB/T 13927 / API 598
D371F4 Fully Lined Butterfly Valve
Design：HG/T 3704 / API 609 Standard：GB/T 12221 / API 609 Flange：HG/T 20592 / ASME B16.5 Pressure：GB/T 13927 / API 598
D371F46 Fully Lined Butterfly Valve
Design：HG/T 3704 / API 609 Structure：GB/T 12221 / API 609 Flange：HG/T 20592 / ASME B16.5 Pressure：GB/T 13927 / API 598
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