Xirtec CPVC is a system of pipe, fittings and valves certified for use in noncombustible construction, high-rise buildings, and air-return plenums. While the product name has changed from IPEX Corzan CPVC, Xirtec CPVC products are manufactured using the Corzan CPVC compound users have grown to trust, IPEX North America notes. www.ipexna.com