Storage to meet the requirements of pharmacopoeia purified water and meet the system's maximum peak demand. Atmospheric pressure or pressure vessel design. Contact with the purified water for 316 l; Other metal material (including stent) for 304. The tank has insulation, thermal insulation material does not contain asbestos, chloride and other materials, thermal insulation layer should be 304 stainless steel metal outside shell. Polishing and passivation treatment tank wall, outer wall hairline polishing. Tank accessories including manhole, breathing apparatus, spray ball, diaphragm pressure gauges, temperature sensors, liquid level sensor and the rupture disk and so on.