Does the air supply ball valve of a SIS valve require an open-indicating mark? ? ?
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Recently, some industry experts found that the air supply ball valves of SIS valves lacked an indicator indicating the normal open state. I would like to know whether there are any relevant regulatory requirements regarding this
I really haven’t noticed any regulations or documents issued by emergency management departments that require anything in this regard
Search online – there are records of inspections carried out by the emergency management agencies in Dalian and Gaoqing County
Search online – there are records of inspections carried out by the emergency management agencies in Dalian and Gaoqing County
It’s very likely the expert’s own standards: lol
I searched on Baidu, and indeed there are inspection reports from the Dalian Emergency Management Bureau and the Gaoqing County Emergency Management Bureau. Indeed, no relevant supporting documents were found. Well, if it’s necessary to add this element, then just add it; there’s no need for any additional investment
Some experts only know how to look things up and mention these things. The three key tools of pseudo-experts: ground connection, flammable and toxic detectors, and flexible hoses. :lol
It’s hard to say about older projects. As for new projects from the past two years, as long as the installation follows the proper standards, it’s really difficult to find any faults with these three aspects; the investment required is low, and few homeowners try to save money in this area
It should be part of the requirements for visual management; we have something similar here as well. Valves that cannot be closed are marked with signs saying “Do not close,” and the same applies to valves that cannot be opened, in order to prevent accidental operation by someone.