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1.1 This specification covers performance requirements, test methods, and marking requirements for metric- and inch-sized system components (electrofusion and mechanical fittings) when joined with metric- or inch-sized PEX pipe (Specification ) as a system, intended for use up to and including a maximum working temperature of 200°F [93°C ]. The following performance requirements are described for the fittings – 68°F [20°C] hydrostatic strength, 176°F [80°C] hydrostatic strength, short-term internal pressure resistance, resistance to tensile loads, cohesive resistance for electrofusion fittings at both the minimum and maximum recommended temperatures, impact resistance for saddle fittings, and leak tightness and pull out tests for mechanical fittings. The metric- and inch-sized components covered by this specification are intended for the above-ground and buried pressure piping applications, such as industrial & general-purpose pipelines, potable water pipelines, and fire – extinguishing pipelines.
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 either inch-pound units or SI units are to be regarded separately as standard. Within the text the SI units are shown in brackets. The values stated in each system may not be exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
Note 1: Suggested hydrostatic design stresses and hydrostatic pressure ratings for pipe and fittings are listed in . Design, assembly, and installation considerations are discussed in . An optional performance qualification and an in-plant quality control program are recommended in .
1.4 The following safety hazards caveat pertains only to the test method 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D618 Practice for Conditioning Plastics for Testing
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1898 Practice for Sampling of Plastics
D2749 Symbols for Dimensions of Plastic Pipe Fittings
D2837 Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products
F412 Terminology Relating to Plastic Piping Systems
F1055 Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing
F2788 Specification for Metric and Inch-sized Crosslinked Polyethylene (PEX) Pipe
Federal StandardFed Std. No. 123 Marking for Shipment (Civil Agencies)
Military StandardMIL-STD-129 Marking for Shipment and Storage
NSF StandardNSF/ANSI 61 Drinking Water System Components -- Health Effects Standard No. 14 for Plastic Piping Components and Related Materials
ISO StandardsISO 15875-5 Plastic piping systems for hot and cold water installations Crosslinked polyethylene (PE-X) fitness for purpose of the system ISO 4427-3 Plastic piping systems Polyethylene (PE) pipes and fittings for water supply fittings
Plastic Pipe InstitutePPI 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
ICS Number Code 23.040.20 (Plastic pipes)
UNSPSC Code 13111016(Polyethylene); 40170000(Pipe piping and pipe fittings)
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ASTM F2829 / F2829M-15, Standard Specification for Metric- and Inch-Sized Crosslinked Polyethylene (PEX) Pipe Systems, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top