According to industrial valve manufacturing standards and existing product data, the maximum size of ball valves can reach 12 inches (300 mm), which is suitable for pipeline systems in the fields of oil, natural gas, etc.
Key Information Analysis
Conventional Size Range:
Most industrial ball valves cover a size range of 2 inches to 12 inches (50 mm to 300 mm), such as CAMERON's NE-C and NE-I series ball valves.
Due to structural limitations, the maximum diameter of special high-pressure hydraulic ball valves (such as the YJZQ series) is usually DN50 (about 2 inches).
Large-diameter Adaptation Scenarios:
Oil and gas long-distance pipelines: 12-inch fully welded ball valves are used for natural gas trunk lines and must meet high pressure (Class 600~1500) and two-way sealing requirements;
Chemical Plants: Large-diameter ball valves are mostly made of stainless steel or carbon steel to withstand corrosive media.
Selection considerations
Pressure matching: The larger the size, the higher the strength requirement for the valve body. The corresponding model should be selected according to the system pressure (such as Class 150~2500); Installation conditions: Large-diameter ball valves need to reserve sufficient operating space, and flange connection types need to ensure that the flange standard is consistent with the pipeline (such as ANSI B16.5). Summary: The maximum standard size of ball valves in the current industrial field is 12 inches (300 mm), which is mainly used in high-pressure and high-flow scenarios such as oil, gas, and chemicals. The selection needs to be adapted based on the pressure, medium, and installation conditions.