The Physical Approach.

How do Corrosion Master CM10 & CM5 models work?
Corrosion Master acts as a galvanic cell and works in 3 different ways:

  • Dissolved oxygen (D.O) present in a system is converted into a harmless hydroxide species, which does not support the corrosion process. Depriving the corrosion process of its vital oxygen source is seen as a key issue in terms of prevention.

  • Zinc species from the anode are released into the heating circuit water, providing cathodic protection throughout the system.

  • Once fitted, Corrosion Master is automatically activated by the presence of dissolved oxygen that entered via the tap water used for filling. It will then continue to work until all D.O has been eliminated, switching off only to be reactivated by the introduction of fresh water. In this sense Corrosion Master is permanent and automatic.

Where do you fit CM10 & CM5 and what preparation is required?
As with a chemical inhibitor the heating circuit should be flushed out thoroughly with either a sludge remover or cleaner such as SM3 and SM4 in line with BS 7593. Once completed CM5 or CM10 should be fitted to the flow or return of the heating circuit of the boiler using the compression fittings provided.

Is Corrosion Master new?
No, over the last 8 years since it was first patented, Corrosion Master has been proving itself to be the first choice for non-chemical protection of heating circuits. With its considerable advantages over chemicals the product has found considerable support from local authority specifiers who have recognised the cost-effective benefits gained from the maintenance free aspect of the device.

Examples of corrosion:



Section through boiler heat exchanger



Inside a domestic radiator