Representation method for ball valve model designation: Additional code for ball valves: V represents the valve core with a V-shaped structure, D represents low temperature, B represents insulation, P represents eccentric structure, and U, S, and DY multiple represent upper mounted;

Ball valve name code: Q represents ball valve;

Ball valve drive code: 2 represents electro-hydraulic, 3 represents turbine, 6 represents pneumatic, 7 represents hydraulic, 9 represents electric, and manual have no code;

Connection method code: 1 represents internal thread, 4 represents flange type, 6 represents welding, and 7 represents wafer type;

Structural type code: Floating type: 1 represents direct flow, 2 represents Y-shaped tee, 4 represents L-shaped tee, and 5 represents T-shaped tee; Fixed type: 0 represents hemispherical straight flow, 6 represents four way flow channel, 7 represents straight flow to, 8 represents L-shaped tee, and 9 represents Y-shaped tee;

Sealing material code: B babbitt alloy, F fluorine rubber, F46 fluorine lining, H rust steel, J rubber lining, M Monel alloy, N nylon plastic, Monel P, Y hard alloy, W valve body directly processed;

Pressure level code: 16 represents a pressure of 16 kilograms (1.6Mpa) * up to 64Mpa;

150LB represents American standard pound pressure, with a high pressure rating of up to 2500LB (150LB=1.6MPA/300LB=2.5-4.0MPa/400LB=6.4mpa/600LB=10mpa);

5K represents daily pressure, * high pressure 63K;

Valve body material code: A titanium and titanium alloy, C carbon steel, I chromium molybdenum steel, P18-8 stainless steel, RMo2Ti stainless steel, S plastic.