Five-valve assemblies are commonly used in the chemical industry; I couldn’t find any information on this in the standards. Does anyone with experience know about it?
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Five-valve assemblies, emergency shut-off valves, insulated joints, and ultrasonic flowmeters are commonly used; their legends could not be found in the standards. Does any experienced colleague know them? This post was last edited by zhenghao on 2009-2-12 10:26.]
Is this for the automation control major? You can ask someone who specializes in self-control, or search on the Standard Technology Network by yourself.