... drinking or beverage factory, which include sand filter, carbon filter, softener, micron filter and RO system.1.1 First stage ... The main structure: barrel body, baffles, manhole, gauge, filter head, filter, into the water pipes, drains and flushing water mains, as ... The main structure: barrel body, baffles, manhole, gauge, filter head, filter, into the water pipes, drains and flushing water mains, as ...