The NIBCO® PEX design applications range from hot and cold potable water piping systems to PEX radiant heat systems, and is a cost-effective alternative that provides flexibility in whole-house design, upgrades and maintenance. NIBCO® PEX tubing, fittings, valves, and manifolds are designed to be used as a complete system, and are backed by a NIBCO INC. limited warranty. Please refer to NIBCO® PEX catalogs and installation manuals for engineering and installation information. "