Ball valve plastic caps are used for various valve products including high, medium, and low-pressure gate valves, stop valves, ball valves, butterfly valves, check valves, needle valves, process valves, drain valves, pressure reducing valves, regulating valves, and more. The valve bodies are made from materials such as cast iron, cast iron, stainless steel CF8, CF8M, CF3, CF3M, high-temperature steel, molybdenum-chromium steel, low-temperature steel, and various special materials. The actuation methods include manual, bevel gear, electric, pneumatic, electro-hydraulic interlock, and gas-liquid interlock.