ca. Valves, hangers, tubing, fittings, manifolds; we’ve got it all! It is the preferred choice for water supply and hydronic heating applications, featuring decreased cost, quicker installation, flexibility, durability, freeze resistance and corrosion resistance. 1'' x 3/4'' x 1'' PEX Barb Reducing Tee Pipe Fitting; Plastic Poly Alloy WARNING: Cancer and Reproductive Harm- for more information go to www.P65Warnings.