1.1 This specification covers crosslinked polyethylene (PEX) tubing that is outside diameter controlled, made in standard thermoplastic tubing dimension ratios, and pressure rated for water at three temperatures (see Appendix X1). Included are requirements and test methods for material, workmanship, dimensions, sustained pressure, burst pressure, environmental stress cracking, stabilizer migration resistance, and degree of crosslinking. Methods of marking are also given. 1.2 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
D1898-68(1989) | Standard Practice for Sampling of Plastics (Withdrawn 1998) |
D2122-22 | Standard Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings |
D618-21 | Standard Practice for Conditioning Plastics for Testing |
D792-20 | Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement |
D2837-22 | Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products |
D3895-19 | Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry |
F412-23 | Standard Terminology Relating to Plastic Piping Systems |
F1281-24 | Standard Specification for Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Pressure Pipe |
D2765-16(2024) | Standard Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked Ethylene Plastics |
F2023-21 | Standard Test Method for Evaluating the Oxidative Resistance of Crosslinked Polyethylene (PEX) Pipe, Tubing and Systems to Hot Chlorinated Water |
F2657-21 | Standard Test Method for Outdoor Weathering Exposure of Crosslinked Polyethylene (PEX) Tubing |
| Standards Dimensions of Steel Pipe (IPS) Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org. |
MIL-STD-129 | Marking for Shipment and Storage |
NSF/ANSI 14 | |
ISO 1167 | Thermoplastics pipes, fittings and assemblies for the conveyance of fluids -- Determination of the resistance to internal pressure -- Part 1: General method |
ISO 13760 | Plastics pipes for the conveyance of fluids under pressure -- Miners rule -- Calculation method for cumulative damage |
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PPI TR-4 | PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), Pressure Design Basis (PDB) and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe |
D1505-18 | Standard Test Method for Density of Plastics by the Density-Gradient Technique |
D1598-23 | Standard Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure |
D1599-18 | Standard Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings |
D1600-18 | Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024) |
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