Percolator Bongs add custom filtration and cooling to the smoke for a more cleaner cool hit. Percolator Bongs feature chambers within their main chamber for the smoke to pass through and made in many different shapes and styles.
There are many different styles of percolator that appear very different, but the basic principle is the same with each puff. Every puff the water is forced through the percolator by the air pressure from the user inhaling on the bong. This accelerates heat, then the hot smoke is cooled by the bubbling water. This action breaks up the smoke up, increasing surface area. Again, this cools the smoke as well as filtering out some of the harmful carcinogens and particulates from the hit. The result is a wonderful bubbling clean smooth hit each time.