For example, sanitary type piping without ball valves should be used. When such nonsanitary ball valves are used, as is common in the bulk drug industry, the cleaning process is more difficult.
CIP 清洁的管道和阀门的材质要求必须是304, 316吗? 球阀的清洁是worst case吗?清洁验证时是否需要在球阀处进行取样?