Ball valve was born in the 1950s. With the development of science and technology, the continuous improvement of production process and product structure, it has rapidly developed into a major valve class in the past 50 years. In Western industrialized countries, the use of ball valves is increasing year by year. Ball valves are widely used. Yuhuan Dayu Valve Co., Ltd. will explain which industrial occasions flange ball valves are used in:
① Flange ball valves can be used for water, oil, steam, natural gas, nitrogen, and so on - oil and natural gas transmission main pipelines, pipelines that need to be cleaned, and those that need to be buried underground, using full bore, fully welded structure ball valves;
② For buried on the ground, select full way ball valves connected by welding or flange; Branch pipes shall be flanged, welded, full bore or reduced bore ball valves.
③ The transmission pipeline and storage equipment for product oil shall be flanged ball valves.
④ Floating ball valves with flange connection and internal thread connection are selected for urban gas and natural gas pipelines.
⑤ In oxygen pipeline systems in metallurgical systems, fixed ball valves with flange connections that have undergone strict degreasing treatment should be selected.
⑥ Low temperature ball valves with valve caps should be selected for piping systems and devices with low temperature media.
⑦ The lifting rod ball valve can be selected for the pipeline system of the catalytic cracking unit of the oil refining unit.
⑧ For devices and pipeline systems with corrosive media such as acid and alkali in chemical systems, it is advisable to select all stainless steel ball valves made of austenitic stainless steel with polytetrafluoroethylene as the valve seat sealing ring.
⑨ Metal to metal sealed ball valves can be selected for pipeline systems or devices with high-temperature media in metallurgical systems, power systems, petrochemical devices, and urban heating systems.
⑩ When flow regulation is required, a worm gear driven, pneumatic or electric regulating ball valve with a V-shaped opening can be selected.