We Ion Water Machineries manufacturer and supplier of water softening plant and domestic online iron removing filter in West Bengal since 1967. During the service period polystyrene base resin in sodium form adsorb Calcium, Magnesium in raw water and after producing certain amount of soft water these are exhausted. These then require regeneration with 5 to 10% common salt solution. In case of big units, saturated salt solution is prepared in a R.C.C. tank and required amount of brine is drawn in a brine measuring tank. The brine soln. is then diluted with the help of an injector and fed into the softener. In case of medium size softener salt solution is prepared in a salt pot and instantly fed into softener. In case of small size softener, salt is dumped inside the shell. Excess brine in then drained during the period of rinsing with filtered water. Soft water is then tested with the help of a hardness test kit and fed into different processes. A water mater incorporated on the line of measuring total amount of soft water treated by the softening plant. In case raw water contains iron more than 0.3ppm as Fe, an iron removal filter must be installed before a softener. This is to avoid iron fouling of Ion Exchange Resin in softener. Capacity 50 to 50000 gallon per hour and above.