Product overview The cavity structure heat exchanger is small in size, light in weight, with long service life; the flue gas side resistance is small, which will not affect the safe operation of the boiler; Strong anti-corrosion ability, automatic water treatment according to PH value; The heat exchange efficiency is high, which is beneficial to reduce the exhaust gas temperature; The water saving effect is good, and the condensate is easy to collect and utilize through the automatic overflow device; The construction is flexible and convenient, and can be processed on site.