The medium is hydrochloric acid; what type of valve should be chosen?
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Hydrochloric acid storage tank, vertical type, 15 m3 in capacity. The outlet pipeline at the bottom is made of PP tubing with a diameter of DN50; PVC valves are used. Due to frequent use, the valves stopped working after less than a year – they can no longer be opened. They haven’t been removed yet; it’s possible that the valve cores have been damaged, which prevents the hydrochloric acid from flowing out. No repairs have been carried out yet :curse:. I would like to ask everyone what type of valve would be suitable – PTFE, PVC, butterfly valve, ball valve, or gate valve?
It is recommended to use pipes with a carbon steel lining and PTFE coating, as well as valves with a carbon steel lining and tetrafluoroethylene coating; this won’t cost much, and such pipes and valves are durable and easy to use
……It’s better to use valves lined with PTFE, as they are less likely to get damaged. The pipes can be made of fiberglass, which has better strength than PP :)
I took a look at your company’s products, but I was unable to add you on WeChat.
Those lined with PTFE will work. Polypropylene ones work too
If the temperature does not exceed 150 degrees and there are no solid impurities, a fluorinated-lined ball valve is recommended. PVC butterfly valves are only commonly used for opening and closing non-essential valves
PP, PVC, PTFE, PVDF – steel-lined pipes work as well