Cross-linked polyethylene pipe approved for radiant in-floor and hydronic heating applications. Available in coils up to 1,000 ft. in length, allowing longer runs and fewer connections -- reducing cost, time and potential leak points. The oxygen diffusion barrier applied to the exterior limits oxygen permeation through the piping wall in hydronic heating applications which prevents corrosion of ferrous metal parts in the heating system. Approved for burial applications including concrete. Ideal for snow and ice melting systems, geothermal groundloops and turf conditioning.