The stiffest and least common type, typically used for simple, straight runs or quick repairs.
The most flexible option, ideal for tight corners and "expanding" around fittings. It has the best freeze resistance and can be repaired with a heat gun if kinked. buy pex pipe online
The "A, B, C" labels refer to the manufacturing method, not the quality grade, but they significantly impact installation. The stiffest and least common type, typically used