Issues regarding the installation of valves at the roots of steam system branch pipes
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Is it necessary to install root cut-off valves at each branch of the main pipe on the outer pipe rack for the plant’s steam system? What are the advantages and disadvantages of installing a root valve?
Another advantage of installing a root valve is that it allows for localized maintenance; in the event of a leak in the steam pipeline, repairs can be carried out promptly； The downside is that it increases potential leakage points and weak insulation areas, as well as resulting in additional operational workload
Generally, isolation valves are installed in areas where equipment or devices such as steam traps are located to facilitate maintenance; it seems less useful to install isolation valves in other places, as the likelihood of needing maintenance on main pipes and branch pipes is relatively low.
It’s generally not installed; if there are always problems with your branch pipes, then it’s a matter of the construction process
From the perspective of the production and usage units, it is recommended to install valves on the branch pipes; this makes it very convenient to shut off the steam supply when there are problems within each steam-using unit. These valves can remain open during normal operation, thus not adding much extra work.
Root valves must be installed; otherwise, in the event of a leak in a branch line, it cannot be isolated, leading to a shutdown of the entire plant. There are no major disadvantages to adding root valves; the only issues are increased investment costs and additional static seal leakage points.