scope:

This standard describes crosslinked polyethylene (PEX) pressure tubing made from material having a standard PEX material designation code of PEX 1306, or higher, according to ASTM* F876 and intended for use as underground potable water, reclaimed water, and wastewater service lines in nominal sizes ½ in. through 3 in. that conform to a standard dimension ratio of SDR9. Tubing may incorporate an optional polymeric outer layer.

Included in this standard are criteria for classifying PEX tubing materials and a system of nomenclature, requirements, and test methods for materials and tubing. Marking requirements are given. Design, installation, and application considerations are discussed in the Foreword and in Appendix A of this standard.

Purpose

The purpose of this standard is to provide the requirements for materials, design, testing and inspection, and shipping of PEX tubing for use as service lines in the construction of underground water distribution systems.

* ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.