What are the requirements for setting up air-cooling inlet and outlet hand valves in petroleum refining?
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consult: What are the requirements for setting up air-cooling inlet and outlet hand valves in petroleum refining? I found at the installation site that some air-cooling inlets and outlets are equipped with hand valves, and some are not. May I ask why? What are the requirements for this process design?
It mainly depends on the design* It’s true that some have it and some don’t. There doesn’t seem to be any hard and fast rules.
I think it is related to the pressure of the medium entering the air cooling, but there is no information and data so I can't be sure.
Low-pressure ones generally have them but high-pressure ones don't, mainly to prevent high-pressure leakage.
Our air cooling devices are all equipped with inlet valves. The plugs at both ends of the air cooling are prone to leakage. One of the reasons for adding valves is to facilitate maintenance and reduce losses.
Generally, in the refining industry, air cooling requires the installation of inlet and outlet valves. In the chemical industry, especially in the fine chemical industry, air cooling does not require the installation of inlet and outlet valves. This is not just because of the problem of easy leakage of wire plugs, but also for the convenience of switching and maintenance.