Verification of the rust prevention effect of air conditioning piping at the University of Cambridge in the UK.

Completely prevent the red rust deterioration of the air conditioning piping at Cambridge University! Red rust prevention device "NMR Pipe Protector."

At Cambridge University, galvanized steel pipes (SGP), which are said to have a lifespan of about 20 years due to red rust, were used for the air conditioning hot water piping. As a result, they were severely troubled by the deterioration caused by red rust, until the introduction of the "NMR Pipe Protector." Before installation, the iron content in the circulating water flowing through the pipes, due to the leaching of red rust, was measured at 43.8 mg/l, indicating a very high level caused by red rust. However, just three weeks after installation, inspections showed that the iron content had decreased to less than half, at 18.0 mg/l. Furthermore, a follow-up inspection about a year after installation revealed that the iron content in the same hot water had decreased to 0.5 mg/l, completely preventing red rust and successfully reducing the iron content to about 1/100 of the level before installation. This is a sufficient value indicating that the corrosion from red rust has stopped and black rust formation has progressed. For comparison, the water quality standard set by the Japan Refrigeration and Air Conditioning Industry Association is an iron content of 1.0 mg/l. The result of 0.5 mg/l at Cambridge University is half of that, confirming the effectiveness of red rust prevention. *For more details, please refer to the PDF document or feel free to contact us.*

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