New Product Announcement: Water Corrosion Inhibitor
At the beginning of the month, corrosion-prevention company Cortec Corporation announced its new corrosion inhibitor for hydrostatic testing of drinking water system components, certified to meet the ANSI/NSF Standard 61.
VpCI-649 HP is a specialty concentrated liquid formulation that contains contact and Vapor phase Corrosion Inhibitors, along with a hard water stabilizer and an organic dispersing agent. It reportedly protects against corrosion at dosages as low as 0.3% by weight.
Additionally, Cortec reports that it has an extremely low chloride impact (less than 0.6 ppm at 0.3% dosage) for use in systems with tight chloride restrictions.
According to the release, the corrosion inhibitor leaves behind a protective molecular layer on all metal surfaces as it circulates through the system. Once the water is drained, a residual protection remains on components made of steel, copper, galvanized steel or aluminum.
“In the past, many industries have found standard VpCI-649 to be an outstanding source of corrosion protection during this sensitive phase. Use, however, was limited to equipment that would not be exposed to drinking water,” writes Cortec.
“With the development of VpCI-649 HP and its certification to meet ANSI/NSF Standard 61 for use in treatment of drinking water system components, the opportunities for corrosion protection during hydrotesting of pumps, valves, piping, fittings and tanks used to carry potable water have suddenly expanded.”
The company says that VpCI-649 HP is intended primarily for corrosion protection during hydrotesting, which is used to ensure vessels, piping and tanks do not leak and can withstand pressure specifications. It can reportedly be added to either fresh water or glycol coolants, circulated and drained for equipment preservation.