Poly-Flo co-extruded double-containment piping system from Asahi/America is available in black PE and euro gray PP-R for applications where thermal expansion and contraction are present. The complete piping system includes pressure fittings, drainage fittings and machined fittings. The SDR-designed system operates up to 150 psi at 68 degrees F and is available in 1- by 1-1/2-inch, 2- by 3-inch and 4- by 6-inch sizes. 800/343-3618; www.asahi-america.com.