Слайд 2

Слайд 3

filter housing (1), filtering bed (2), automatic control valve (4), inlet

filter housing (1), filtering bed (2), automatic control valve (4), inlet

pipe (6), outflow pipeline for purified water (7), drainage pipe (8) and drainage-distributing device (3; 10). preparation tank for regeneration of filtering bed (5). tableted salt (9).
Слайд 4

special resin

special resin