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Hydrotest drinking water components with Cortec’s VpCI-649 HP
Cortec solved that problem by formulating VpCI-649 HP, a hydrotest additive certified to meet ANSI/ NSF standard 61 for drinking water system components when used as a surface treatment at concentrations up to 3% and drained. It is effective at dosages as low as 0.3% by weight and has a low chloride contribution of less than 0.6 parts per million (ppm) when used at this rate, making it viable for use in applications with tight chloride restrictions. As it protects steel, copper, galvanised steel, and aluminium, VpCI-649 HP covers a range of possible drinking water system components. It contains a hardwater stabiliser and organic dispersing agent but does not contain nitrite, phosphate, molybdenum, or chromate. Beyond hydrotesting, VpCI-649 HP can be used for long-term protection in water and glycol closed-loop systems.
Furthermore, what if they are needed for a potable water drinking application with limits on which chemicals can be used? Cortec answers these questions with VpCI-649 HP, a corrosion inhibiting hydrotest additive for drinking water system components. The VpCI-649 series is known in the oil and gas industry and other sectors that regularly perform hydrostatic testing (hydrotesting). This additive helps protect systems from flash rust at a vulnerable time when water is flushed through, pressurised, and drained. However, until last year, no versions of VpCI-649 could be used when hydrotesting drinking water components.
New waterlines, valves, and tanks need to be hydrostatically tested to check for leaks or failures before officially performing their fluid handling role. But what if these parts are made of metal at risk for corrosion? VpCI-649 HP is a corrosion inhibiting hydrotest additive for drinking water system components (Image: Cortec/Adobe)
Water & Wastewater Asia | September-October 2024 57
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