DeZURIK is proud to be a supplier of valves for the Montreal Wastewater Treatment Plant expansion in Australia.. The plant is currently the third largest in the world, and when this 10-year expansion is complete, it will be the biggest ozonation facility in the world. DeZURIK valves going into the facility include 36” & 48” APCO brand CSD Slanting Disc Check Valves, along with a variety of APCO CRF Rubber Flapper Check Valves, ARV Air Release Valves, and Combination Air Valves.