ASTM F2434-19

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2434 − 18 F2434 − 19 An American National Standard
Standard Specification for
Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9
Cross-linked Polyethylene (PEX) Tubing and SDR9 Cross-
linked Polyethylene/Aluminum/Cross-linked Polyethylene
(PEX-AL-PEX) Tubing
This standard is issued under the fixed designation F2434; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers metal insert fittings with o-ring seals and copper crimp rings for use with Cross-linked
1 3
Polyethylene (PEX) and Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene (PEX-AL-PEX) tubing in ⁄2, ⁄4 1, and
1 ⁄4 in. nominal diameters that meet the requirements for Specifications F876 or F3253, and F2262 respectively. These fittings are
intended for use in 125 psi (861.9 kPa) (PEX-AL-PEX) and 100 psi (689.5 kPa) (PEX) cold- and hot-water distribution systems
operating at temperatures up to and including 180 °F (82 °C). Included are the requirements for materials, workmanship,
dimensions, performance, and markings to be used on the fittings and rings.
1.2 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 Compliance with this specification requires that these fittings be tested and certified to Specification F877 and F2262.
1.4 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
2.1 ASTM Standards:
B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines
B62 Specification for Composition Bronze or Ounce Metal Castings
B140/B140M Specification for Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bar, and Shapes
B283 Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)
B371/B371M Specification for Copper-Zinc-Silicon Alloy Rod
B584 Specification for Copper Alloy Sand Castings for General Applications
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
E18 Test Methods for Rockwell Hardness of Metallic Materials
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
F2262 Specification for Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Tubing OD Controlled SDR9 (With-
drawn 2018)
This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.
Current edition approved Nov. 1, 2018Nov. 1, 2019. Published December 2018November 2019. Originally approved in 2004. Last previous edition approved in 20142018
as F2435 - 14.F2435–18. DOI: 10.1520/F2434-18.10.1520/F2434-19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2434 − 19
F3253 Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic
Distribution Systems
2.2 ASME Standards:
B1.20.1 Pipe Threads General Purpose (Inch)
B16.18 Cast Copper Alloy Solder Joint Pressure Fittings
B16.22 Wrought Copper and Copper Alloy Solder Joint Pressure Fittings
2.3 Manufacturer’s Standardization Society Standard:
SP-104 Wrought Copper Solder Joint Pressure Fittings
2.4 NSF International Standards:
NSF/ANSI 14 Plastic Piping Components and Related Materials
NSF/ANSI 61 Drinking Water System Components-Health Effects
3. Terminology
3.1 Definitions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology D1600, unless
otherwise indicated.
4. Classification
4.1 This specification covers one class of fittings and copper crimp rings suitable for use with tubing that meets the requirements
of Specifications F876 or F3253 and PEX-AL-PEX tubing that meets the requirements of Specification F2262.
5. Materials and Manufacture
5.1 Fittings—The fittings shall be made from one of the following metals:
5.1.1 Cast Copper Alloys—Cast copper alloy fittings shall be made from material meeting the requirements of Specification
B584, Copper Alloy UNS Nos. C84400, C83800, C87850 or C89844 or Specification B62 Copper Alloy UNS No. C83600.
5.1.2 Machined Brass—Machined brass fittings shall be made from material meeting the requirements of Specification
B371/B371M, Copper Alloy UNS No. C69300, Specification B371/B371M, Copper Alloy UNS No. C69850, Specification
B140/B140M Copper Alloy UNS No. C31400, Specification B283 Copper Alloy UNS No. C37700, or Specification B16/B16M
Copper Alloy UNS No. C36000 or C69300 C36000, Copper Alloy UNS No. C27450.
5.1.3 Forged Brass—Forged brass fittings shall be made from material meeting the requirements of Specification B283 Copper
Alloy UNS Nos. C37700 or Copper Alloy UNS No. C27450.C27450 or Copper Alloy UNS. No. C69300 or Copper Alloy UNS
No. C69850.
5.2 Crimp Rings—Crimp rings shall be made from copper UNS Nos. C10200, or C12200, and shall be black in color or
alternately be identified per 10.2.3.2 of this specification. The crimp rings shall have a minimum allowable hardness of 35 and a
maximum allowable hardness of 45 on the Rockwell 15T scale when measured according to Test Methods E18.
5.3 O-rings—O-rings used on the copper alloy fittings to make a static seal shall be manufactured from ethylene propylene
rubber (EPDM) or silicone rubber (Si), with a Shore A durometer between 60 and 70 when tested in accordance with Specification
D2240.
6. General Requirements
6.1 The following sections of Specifications F877 and F2262 constitute a part of this specification.
6.1.1 Use with PEX Tubing (F877):
6.1.1.1 Requirements,
6.1.1.2 Test Methods, and
6.1.2 Use with PEX-AL-PEX Tubing (F2262):
6.1.2.1 Performance Requirements of Connectors except product marking section.
6.1.3 Retest and Rejection.
6.2 In addition, when a section with a title identical to that referenced in 6.1, appears in this specification, it contains additional
requirements that supplement those appearing in Specifications F877 and F2262.
6.3 Dimensions—Any randomly selected fitting or fittings, and crimp ring or crimp rings, shall be used to determine dimensions.
Measurements shall be made in accordance with Test Method D2122, except determine diameters by making measurements at four
locations spaced approximately 45° apart around the circumference. Inspection and gauging of solder joint ends shall be in
accordance with ASME B16.18, ASME B16.22, or MSS SP-104.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http://www.nsf.org.
F2434 − 19
6.4 General—All performance tests shall be performed on assemblies of fittings, crimp rings, PEX, and PEX-AL-PEX tubing.
Fittings and crimp rings shall meet the material and dimensional requirements of this specification. PEX tubing shall meet the
requirements of Specification F876 or F3253. PEX-AL-PEX tubing shall meet the requirements of Specification F2262. Assembly
of test specimens shall be in accordance with 9.1.1. Use separate sets of assemblies for each performance test requirement. In
addition, fittings shall be designed with sufficient overall dimensions to allow proper use of crimp tool without interference with
previously completed crimps on the same fitting.
7. Dimensions
7.1 Dimensions and Tolerances—The dimensions and tolerances of fittings and crimp rings shall be as shown in Fig. 1, Fig. 3,
Fig. 4, and Table 1, when measured in accordance with 6.3.
7.1.1 Alignment—The maximum angular variation of any opening shall not exceed 1° off the true centerline axis.
7.1.2 Fittings with Solder Joint Ends—Solder joint ends shall be in accordance with ASME B16.22, ASME B16.18, or MSS
SP-104.
7.1.3 Tapered Threaded Ends—Fitting threads shall be right-hand conforming to ASME B1.20.1. They shall be taper threads
(NPT).
8. Workmanship, Finish, and Appearance
8.1 The sealing surfaces of the insert shall be smooth and free of foreign material. Fitting walls shall be free of cracks, holes,
blisters, voids, foreign inclusions, or other defects that are visible to the unaided eye, that affect the wall integrity.
R1
R2
A B L1 L2 H Num- G T Mini-
Mini- S E
W
Outside Mini- Distance Min Min ber Rib Mini- mum
C
Size mum Isolator Groove
Rib
Diameter mum to First Insert Rib of Spacing mum Rib
E
Width
Ra- Diameter Depth
A B D
of Rib ID Rib Length Height Ribs Typical Wall Ra-
dius
dius
⁄2 in. 0.471 ± 0.004 0.310 0.214-0.224 0.625 0.013 3 0.03–0.04 0.058–0.066 0.028 0.006 0.015 0.518 ± 0.002 0.040± 0.001
⁄4 in. 0.667 ± 0.004 0.500 0.21
...