Process for cleaning and corrosion protection of utility water systems or heating plants

摘要

A process for cleaning and corrosion protection of utility water systems or heating plants, characterised in that the utility water system or the heating plant (23) is (a) emptied, (b) filled with a solution of phosphates and silicates in water and subjected for a certain period to a certain superatmospheric pressure, (c) the pressure is abruptly reduced and the system is emptied and (d) the process of subjecting to pressure and pressure release is repeated several times. <IMAGE>