Federal Construction Group replaced the Industrial Air Storage Vessel and the Desiccant Drier Vessel located in room #3163 of building 20000 (Hanger 3). This project also included the replacement of automatic water blow down drainage systems associated with these vessels. We replaced the existing industrial air storage vessel with a new vessel of the same capacity and orientation as the existing one. Provided piping as required to connect the new vessel to existing air system piping and provided a new automatic and manual blow down piping and shut off valves to match existing valves. We also provided the new desiccant drier vessel with the same type and capacity as the existing vessel. The new desiccant tank had a new media and an optional pressure gauge kit. We provided piping as required to connect to the existing air system piping and new blow down piping and shut off valves. Installed a new air pressure gauge for new air storage and pressure tested all new pipe joints and fittings for new air storage and desiccant vessels to verify there were no leaks.