Generally, ball valves are recommended in two-position adjustment, strict sealing performance, mud, wear, shrinking channels, rapid opening and closing action (1/4 turn opening and closing), high pressure cutoff (large pressure difference), low noise, cavitation and gasification phenomenon, small leakage to the atmosphere, small operating torque, and small fluid resistance pipeline systems.
Ball valves are also suitable for lightweight structures, low pressure cut-off (small pressure difference), corrosive media piping systems. Ball valves are also available in low temperature (cryogenic) devices and piping systems. In the oxygen piping system of the metallurgical industry, ball valves with strict degreasing treatment are required. When the main line in the oil pipeline and gas pipeline needs to be buried underground, the full-diameter welded ball valve should be used. Ball valves of special structure with V-shaped openings should be selected when regulating performance is required. In petroleum, petrochemical, chemical, electric power, and urban construction, metal-to-metal sealed ball valves can be selected for piping systems with operating temperatures above 200 degrees.