July 26, 2026

PEX pipe fittings sizes look like the simplest spec in a plumbing catalogue. A 1/2-inch fitting goes on 1/2-inch tube, a 3/4-inch fitting goes on 3/4-inch tube, and the purchase order writes itself. That works right up until a container of technically-correct fittings lands somewhere the threads do not match the local pipework, or a