The exceptions involve fluorides at any temperature or concentration; hot, concentrated phosphoric acid; and really alkaline chemicals at elevated temperatures. DDPS jacketed vessels are equipped with a vent coupling at the top of the jacket shell and a drain coupling in the lower jacket growth diaphragm near the vessel outlet. https://waylondcqjc.blogunteer.com/29076519/an-unbiased-view-of-glass-lined-reactor-repair