AIV Product Line

Duo-Chek™ II, part of the Crane Valve Group, is the original “Mission” dual-plate wafer check valve. It is designed to be stronger, lighter, smaller, and more efficient than traditional swing check valves. Its compact design makes installation easy between standard gaskets and line flanges, which helps provide reliable performance and reduced maintenance. Duo-Chek valves are versatile and work well for both liquid and gas applications across industries such as oil and gas, petrochemicals, refining, power generation, marine, water treatment, and pulp and paper. Duo-Chek™ II valves are recognized as the industry standard for low-pressure-drop flow reversal protection. AIV supplies cast-steel wafer check valves in various designs and seat options.