Question regarding the vent manifold and shut-off valve
Thread Content
Current status: The venting system has been completed, while the process equipment has not yet been fully finished. It is now necessary to enable venting for the completed equipment and isolate the venting of the unfinished equipment. Could an isolation-type stop valve be installed on the vent manifold of unfinished equipment? Are there any standards that support the use of such a stop valve on vent manifolds? What are the advantages and disadvantages of this approach?
It’s better to add a blind flange; the valve is unreliable.
There are no regulations stating that it’s not allowed. We have indeed added some similar valves. A blind plate is installed in front of the valve after adding it.
Agree on blind plates; valves are unreliable.
Lao Yu is right; reliability that provides a safety barrier must be high, and it doesn’t matter to spend a little more money on it. Therefore, supporting a stop valve first and then adding a blind flange.
A blind plate is still the better choice; as everyone says, valves are unreliable
If it’s the designer, it’s recommended to ignore it; if it’s the owner, mention to the designer to add blind flanges to the valves!