Air Receivers
8101018078 - LV911 CE VESSEL 900l 11b
Air receiver is internally and externally hot-dip galvanized.
https://www.atlascopco.com/en-uk/compressors/wiki/compressed-air-articles/what-is-an-air-receiver
https://www.atlascopco.com/en-uk/compressors/wiki/compressed-air-articles/what-is-an-air-receiver