The kinetic energy of the mass of exhaust gas carries it along the exhaust pipe, and causes a pressure build up ahead of the mass of gas and a partial vacuum behind it. This principle is used in a tuned exhaust system.
Culligan - $2352 ($2053 w/o R/O unit) Culligan Gold Series (10), Good Water Machine. If I were to look at price only, I would go with either the cheaper Ecowater system w/R/O at $2698 or the Culligan system. At almost $4k, the Kinetico system seems greatly over priced.
HUL Pureit Classic 23 Litre Water Purifier Price Starts from Rs. 2389. The best price for HUL Pureit Classic 23 Litre Water Purifier Price is Rs. 2389 at Amazon.in. The price list was fetched from top online stores in India and was last refreshed on 16 Apr 2017. HUL Pureit Classic 23 Litre Water Purifier Details.