RP-4-47 is a non-chromate, closed system rust inhibitor that is used in circulating water cooling units where very little fresh water is added. RP-4-47 contains rust inhibitors, corrosion preventers, water softeners, scale preventatives and sequestering agents.
RP-4-47 chemically reacts with oxygen to form a protective film on the inside of metal pipes. This film prevents rust and corrosion from occuring inside the system. RP-4-47 is compatible with most glycols and other anti-freezes that might be added to the system.
RP-2-27 Rust Inhibitor Water Treatment for Closed Water Recirculating Systems
RP-2-27 is used throughout the Industrial Water Treatment Industry as a corrosion inhibitor in chiller and closed loop cooling water systems. This product is an excellent choice for treating water systems where high levels of chlorine or oxygen are present.
In solution, RP-2-27 anions complex with oxidized iron to form a protective film of molybdate and feric oxide. This product is designed to clean a scaled system, while keeping molybdate in suspension. RP-2-27 is considered an effective, environmentally acceptable alternative to sodium nitrate treatment, exhibiting low or even negligible toxicit.
