ASTM F2735 - 18

    Standard Specification for Plastic Insert Fittings For SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing

    Active Standard ASTM F2735 | Developed by Subcommittee: F17.10

    Book of Standards Volume: 08.04


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    1. Scope

    1.1 This specification establishes requirements for sulfone plastic insert fittings and copper crimp rings for three sizes (1/2 , 3/4 , and 1) of cross-linked polyethylene (PEX) tubing that meet the requirements for Specification F876 or F3253, and polyethylene of raised temperature (PE-RT) tubing that meet the requirements of Specification F2623. These fittings are intended for use in 100 psi (690 kPa) cold- and hot-water distribution systems operating at temperatures up to and including 180 °F (82 °C). Included are the requirements for material, molded part properties, performance, workmanship, dimensions, and markings to be used on the fittings and rings.

    1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.3 The following is an index of the appendix in this specification.

    GO/NO-GO Crimp Gauges

    Appendix X1

    1.4 The following precautionary caveat pertains only to the test method portions, Sections 11 and 12, 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASME Standard

    B1.20.1 Pipe Threads General Purpose Inch

    ASTM Standards

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings

    D6394 Specification for Sulfone Plastics (SP)

    F412 Terminology Relating to Plastic Piping Systems

    F876 Specification for Crosslinked Polyethylene (PEX) Tubing

    F877 Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water Distribution Systems

    F1498 Specification for Taper Pipe Threads 60 for Thermoplastic Pipe and Fittings

    F1807 Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing

    F2623 Specification for Polyethylene of Raised Temperature (PE-RT) SDR 9 Tubing

    F3253 Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic Distribution Systems


    ICS Code

    ICS Number Code 23.040.45 (Plastic fittings)

    UNSPSC Code

    UNSPSC Code 13111076(Cross linked polyethylene PEX); 40183000(Rubber and plastic tubing)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/F2735-18

    Citation Format

    ASTM F2735-18, Standard Specification for Plastic Insert Fittings For SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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