This is another ESDV I am working on. It’s 14″ 300#, and once in a while, HCl acid will be used to clean the system.
The piping is CS with some corrosion allowance at one end, the other end is GRE (funny huh).
I am thinking of a CS valve body, wetted parts are cladded with acid resistance materials. Metal seats are normally specified for ESDV in my company and most of the are carbide tungsten coated stainless steels. I am not sure if this is a good choice for my valve as I could not find reference to carbide tungsten acid resistance properties. One of the option could be bare SS 316 for ball and something for the seats to avoid galling.
Appreciate your inputs / advice.
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