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本推荐性作法涉及炼厂用自动阀门的特殊要求,汇集了本行业众多专家的知识和经验,为一些众所周知的问题提供了可行的解决方案。本标准提供了活塞驱动调节阀(例如双作用及弹簧复位式)及薄膜驱动调节阀(弹簧复位式)的选择、规
This recommended practice involves the special requirements of automatic valves used in refineries, brings together the knowledge and experience of many experts in the industry and provides workable solutions to some well-known problems. This standard provides a piston-driven control valve (such as double-acting and spring return type) and film-driven control valve (spring return type) choice, regulation