Online request for help: What material ball valve should be used in hydrogen chloride media
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This post was last edited by shiwendong on 2018-4-17 09:21. What type of ball valve should be used for hydrogen chloride media? The process medium is acid-containing hydrogen gas (20% HCl). The material currently considered for use is: valve body made of SS304 with a fluorine lining. It is used for venting purposes. Users are concerned that drops of hydrogen chloride gas may fall onto the valve body and cause corrosion. Then what type of ball valve should be used in a hydrochloric acid hydrogen medium to solve this problem?
FK-type ball valves are used in high-risk applications and offer excellent sealing performance.
For applications where pressure and temperature are not high, fully plastic valves can be used, as they are corrosion-resistant on both the inside and outside
For low-pressure applications, fluorinated-lined valves are suitable; it would be best to provide details of the specific operating conditions, as well as information on special materials
May I ask the original poster, is it for a graphite synthesis furnace?
Ball valves made of pure titanium can solve the problem.
It mainly depends on the pressure, temperature, and hydrochloric acid concentration; Hastelloy B series alloys are suitable for hydrochloric acid at any concentration and temperature