Sprinkler Corrosion Prevention
MIC (Microbiologically Influenced Corrosion) and oxygen-driven pitting are the two most common causes of pinhole leaks in fire sprinkler pipe. Corrosion prevention extends system life from 30 years to 50+ years and prevents surprise shutdowns for reline work.
Kits in this collection include EPA-approved MIC inhibitors, monitoring coupons for in-line testing, application tools (pumps, injection fittings), and documentation forms for NFPA 25 Chapter 14 internal inspection findings.
After treatment, pair with commercial maintenance kits for annual flush-and-check. For systems that experience freeze damage on top of corrosion, bundle with a winterization kit.
Frequently Asked Questions
What causes fire sprinkler pipe corrosion?
Two mechanisms: MIC (bacteria in stagnant water create acidic byproducts) and oxygen-driven pitting (trapped air attacks steel at the waterline). Both show up as pinhole leaks or reduced flow.
How does a corrosion inhibitor work?
EPA-approved inhibitors form a passivating film on the interior pipe wall and suppress bacterial growth. A single treatment typically lasts 12-24 months; monitoring coupons indicate when re-treatment is needed.
Is corrosion prevention required by NFPA 25?
NFPA 25 Chapter 14 requires a five-year internal inspection. Evidence of MIC or pitting triggers further action. Corrosion prevention is not mandatory but is the accepted response to NFPA 25 findings.
Can corrosion-damaged pipe be restored without replacement?
Light pitting can be stopped with inhibitors; heavy pitting or perforation requires pipe replacement. Monitoring coupons installed with our kits give you 12-18 months of lead time before replacement is forced.
