What Causes Corrosion in Steam Condensate Systems?
Most condensate system corrosion is caused by carbon dioxide and oxygen, arried into the system with the steam. Carbon diox-ide, dissolved in the pure condensed steam, form corrosive car-bonic acid. if oxygen is present with carbon dioxide, the corro-sion rate is much higher, and is likely to produce localised pitting. Ammonia, in combination with carbon dioxide or oxygen, attacks copper alloys.