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.
3100 psi 7/8. Shaft Power Pressure Washer Water Pump & Spray Kit (Gun, Wand / Lance, Hose) by Himore. $327.50(1 new offer) 5 out of 5 stars 1. Troy bilt 020344 pump 2800 psi POWER PRESSURE WASHER WATER PUMP Troy-Bilt 020344 020344-0. by Troy-Bilt. $179.00(1 new offer) 5 out of 5 stars 1.