The bottle trap is an essential element of the basin’s plumbing that keeps the bathroom hygienic and odour-free. An inner tube acts as a barrier or “trap,” preventing sewer gas from entering the atmosphere. Without the tube, the space above the water line would allow gas to escape through the drain hole in the sink. Check out our full range of Wall hung basins here for sale at bathroom shop UK online store. A crucial aspect of your plumbing system, bottle traps help to keep your bathroom hygienic and safe from bacteria. Order online at bathroomshopuk.co.uk