Draft Details

1.1 Inclusions

1.1.1 General

This Standard specifies requirements for crosslinked polyethylene (PEX) tubing systems that comprise tubing with or without an optional oxygen barrier layer, and fittings.

Tubing covered by this Standard is made in SDR 9.

1.1.2 Pressure ratings

Tubing systems covered by this Standard are pressure rated at 23 °C, 82 °C, and 93 °C, and have a maximum pressure rating of 690 kPa at 82 °C (Table A.1 shows pressure ratings at each temperature).

1.1.3 Applications

Tubing systems covered by this Standard are intended for use in residential and commercial potable water distribution systems and other applications, including municipal water service lines, building supply lines, reclaimed water distribution, radiant panel heating and cooling systems, hydronic baseboard heating systems, snow and ice melting heating systems, building services piping, compressed air distribution, and ground source geothermal systems, provided that the PEX tubing systems comply with the applicable code requirements.

Note: The requirements and test methods specified in this Standard can involve hazardous materials, operations, and equipment. This Standard does not purport to address all of the safety problems associated with its use. Users of this Standard are responsible for establishing appropriate safety and health practices and determining the applicability of regulatory limitations before using this Standard.

1.2 Requirements

This Standard specifies requirements for

materials;

quality of work;

tubing;

metal components of fittings;

fittings;

interior liners;

dimensions;

hydrostatic capability;

marking for tubing and fittings; and

marking for flexible pre-insulated tubing.