In today’s episode of The Build Show, Eric heads to RWC’s World Headquarters Test Lab with product expert Sai to put PEX piping to the ultimate pressure test — literally until it bursts. Together, they break down the ASTM and ANSI standards that govern PEX systems, discuss the differences between PEX types (A, B, and C), and walk through how fittings and piping must work as a system to meet performance standards. Then, it’s time for the real excitement: a hydrostatic burst test that pushes a PEX-A system far beyond its rated operating pressure. You’ll see the setup, learn about the testing parameters, and watch as the tubing balloons and finally fails — at an incredible 852 PSI, more than 10 times higher than typical household water pressure. Eric and Sai talk through what this means for installers and homeowners — from material integrity to fitting performance — and why tests like this prove PEX’s reliability in real-world plumbing applications

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