We are glad to inform you that BIANCHI F.LLI just achieved WRAS certification and approval on two DZR BRASS ball valves lines. This important acknowledgment confirms the quality of BIANCHI F.LLI products.

DZR BRASS (dezincification resistant) valves are tipically used in areas where aggressive water can speed up corrosion in high content zinc materials, like brass. This process is called "dezincification". Zinc is slowly removed by water rich of certain chemical elements like oxygen and carbon dioxide. This leaves a deposit of the more noble metal copper in the form of an inconsistent porous layer, compromising the integrity of the valve. Using a brass alloy with well known de-alloying inhibitors make the valves resistance to this process.