Explore the benefits of Westlake Pipe & Fittings' NAPSYS™-HR product family, designed specifically for high-rise and plenum applications.

• The PVC compounds used to manufacture our NAPSYS™-HR PVC pipe & fittings contain smoke-suppressant additives, which reduce both flame spread and smoke development properties. 
• Certified to CAN/ULC-S102.2, NAPSYS-HR PVC DWV 25/50 has a flame spread rating of 0 and smoke development classification of 50
• The low-VOC (486 and 508 grams/litre for the 1 Step and 2 Step products, respectively) solvent cement application eliminates the need for, and risks associated with, specialized tools, like torches
• NAPSYS™-HR products are easy to handle, making installation fast and safe, even when working in restricted or awkward spaces—without the need for special equipment or additional manpower
• Can be used for both above- and below-grade applications with pipe & fittings available in 1.5- to 10-inch diameters and pipe in 12-foot length