NSF approved for drinking water Meets NSF-14 standards Meets health effects requirements of NSF/ANSI 61 Provides longer service life for heavy-duty and general-purpose applications Pack-Joint fittings with reinforcement are the only way to connect joints. Insert fittings will not work properly or will not install correctly. Made of high-performance PE4710 material High-density polyethylene pipe (HDPE or PE pipe) is made from ethylene, which can be extracted from crude oil or natural gas. PE pipe is extremely strong, durable, flexible, non-corrosive and chemically resistant. These features make it well suited for a variety of underground conditions with a service life of up to 100 years. The smooth wall reduces friction, thereby increasing flow with the same diameter as other pipes.