Is it necessary to install gate valves before and after the emergency shut-off valve in the tank?
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The owner requires that gate valves be installed before and after the emergency shut-off valve in the tank; he believes that the emergency shut-off valve needs to be overhauled regularly
The probability that the emergency shut-off valve body needs maintenance is low; if the owner insists on adding it, then just add it – unless it’s an EPC project
I think adding it to the roots will do； There is no need to add them at both the beginning and the end. Moreover, many tanks already come equipped with double isolation valves. Thank you!
It’s not necessary to add it, but since the client requests it, there’s nothing wrong with doing so; it’s better to add it than not.
Add it if necessary; automatic things are always unreliable, and their quality varies
Understanding the owner’s mindset, he suggested adding it if that’s what they wanted
If the emergency shut-off valve for entering the tank meets the SIL rating requirements, there is no need to install an additional one, as it is already reliable enough. But in the case of small, unregulated factories, it’s a different story, and such concerns are understandable.
It’s not necessary to add it, but the valve at the base of the tank must be installed.