The ProPEX lead-free brass valves from Uponor are constructed from high-quality ECO BRASS lead-free brass and now includes an industry-leading 10-year warranty for increased confidence and peace of mind, the company points out. The upgraded valves are the only leading valves on the market to comply with the International Plumbing Code, Uniform Plumbing Code and International Residential Code, as well as being listed to NSF 14, 61, 359 and 372, Uponor notes.