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Instructions for coding ball valve models (representation method): With the rapid development of the industrial machinery manufacturing sector, the application of valve products has evolved from low pressure and normal temperature conditions to high pressure and high temperature conditions as society and industry advance, and the usage of ball valves is also increasing significantly year by year. For different medium requirements and operating conditions, various ball valve models are used. The method for selecting ball valve models provided here explains the relevant factors such as the addition of additional conditions to the ball valve, the choice of drive mechanism, different connection types, structural variations, types of sealing materials, valve pressure levels, and valve body materials. This aims to facilitate users in selecting the appropriate ball valves and to help them make informed decisions when purchasing them. Method for indicating ball valve model numbers: Additional codes for ball valves – V indicates a valve core with a V-shaped structure, D denotes low temperature performance, B refers to insulation features, P indicates an eccentric structure, while U, S, and DY generally denote upper-mounted types ； Ball valve name code: Q denotes a ball valve ； Ball valve actuation code: 2 denotes electro-hydraulic, 3 denotes turbine, 6 denotes pneumatic, 7 denotes hydraulic, 9 denotes electric; manual operation has no code ； Connection method code: 1 denotes internal thread, 4 denotes flange type, 6 denotes welding, 7 denotes clamp type ； Structural type code: Floating type: 1 denotes a straight flow channel, 2 denotes a Y-shaped tee, 4 denotes an L-shaped tee, 5 denotes a T-shaped tee ； Fixed type: 0 indicates straight-through hemispherical, 6 indicates four-way flow channel, 7 indicates straight-through flow, 8 indicates L-shaped tee, 9 indicates Y-shaped tee ； Sealing material code: B – Babbitt alloy; F – Fluororubber; F46 – Fluorinated lining; H – Stainless steel; J – Rubber lining; M – Monel alloy; N – Nylon plastic; Monel P; Y – Cemented carbide; W – Valve body manufactured directly ； Pressure rating code: 16 indicates a pressure of 16 kilograms (1.6 Mpa), with a maximum of up to 64 Mpa ； 150LB refers to the pressure rating in US pounds; the maximum pressure tolerance can reach 2500LB (150LB=1.6MPA/300LB=2.5-4.0MPA/400LB=6.4MPA/600LB=10MPA) ； 5K denotes the daily pressure, with a maximum pressure of 63K; valve body material codes: A for titanium and titanium alloys, C for carbon steel, I for chromium-molybdenum steel, P18-8 series stainless steel, RMo2Ti series stainless steel, S for plastic. For issues related to the selection of valves based on operating conditions, etc., you can communicate via WeChat (avatar). Example of ball valve model notation: Q941F46-16C – Electric fluoropolymer-lined ball valve. 1. Q: Indicates a ball valve ； 2, 9: Indicates that the drive mechanism is electric ； 3, 4: Connection method is flange connection ； 4、1: The structural format is a floating straight-through flow channel ； 5、F46: The sealing pair material is fluororubber ； 6, 16: Indicates a nominal pressure of 1.6 MPa ； 7、C: Indicates that the valve body material is carbon steel.