ASTM D2683-20

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: D2683 − 14 D2683 − 20 An American National Standard
Standard Specification for
Socket-Type Polyethylene Fittings for Outside Diameter-
Controlled Polyethylene Pipe and Tubing
This standard is issued under the fixed designation D2683; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers polyethylene socket-type fittings for use with outside diameter-controlled polyethylene pipe as
specified by Specifications D3035 and D2513. Requirements for materials, workmanship, dimensions, and pressure performance
are included. Where applicable in this specification, “ pipe” shall mean “pipe and tubing.”
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 The following safety hazards caveat pertains only to the test method portion, Section 88,, 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 safety, health, and healthenvironmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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:
D618 Practice for Conditioning Plastics for Testing
D1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
D1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
D2513 Specification for Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings
D2657 Practice for Heat Fusion Joining of Polyolefin Pipe and Fittings
D3035 Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter
D3350 Specification for Polyethylene Plastics Pipe and Fittings Materials
F412 Terminology Relating to Plastic Piping Systems
F2620 Practice for Heat Fusion Joining of Polyethylene Pipe and Fittings
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, 2014Nov. 1, 2020. Published December 2014November 2020. Originally approved in 1968. Last previous edition approved in 20102014
ε3
as D2683 – 10D2683 – 14. . DOI: 10.1520/D2683-14.10.1520/D2683-20.
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.
*A Summary of Changes section appears at the end of this standard
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D2683 − 20
2.2 Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.3 Military Standard:
MIL-STD-129 Marking for Shipment and Storage
2.4 Plastic Pipe Institute
PPI TR-3 Policies and Procedures for Developing Hydrostatic Design Basis (HDB), Pressure Design Basis (PDB), Strength
Design Basis (SDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe7
PPI TR-4 HDB/SDB/PDB/MRS Listed Materials, 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
3. Terminology
3.1 Definitions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology D1600, unless
otherwise specified. The abbreviation of polyethylene plastic is PE.
3.2 standard thermoplastic pipe dimension ratio (SDR)—the ratio of pipe outside diameter to wall thickness. It is calculated by
dividing the average outside diameter of the pipe by the minimum wall thickness.
4. Classification
4.1 This specification covers polyethylene fittings of the socket type made as specified in 5.1 and 5.2
4.1.1 Fittings covered by this specification are normally molded. In-line fittings such as couplings, unions, bushings, caps, nipples,
etc., may be extruded or machined from extruded stock. Special fittings such as transition fittings and tapping teets shall be
assembled and fabricated in accordance with procedures agreed upon between the manufacturer and the purchaser.
4.1.2 Fittings covered by this specification are intended to be joined by heat fusion to PE pipe.
4.1.3 Fittings intended for use in the distribution of natural gas or petroleum fuels shall also meet the requirements of Specification
D2513.
5. Materials
5.1 Polyethylene Compound—Polyethylene material compounds suitable for use in the manufacture of fittings under this
specification shall meet Specification D3350 and shall meet the Specification D3350 classification and property requirements in
Table 1, and shall have PPI TR-4 HDB and HDS listings at 73°F (23°C) and HDB listings 140°F (60°C) in accordance with Table
1.
TABLE 1 Specification D3350 Classification of Polyethylene Fittings Materials
Physical Properties Cell Classification and Properties for Polyethylene Pipe Materials
PE2606 PE2706 PE2708 PE3608 PE3708 PE3710 PE4708 PE4710
Density 2 2 2 3 3 3 4 4
Melt Index 3 or 4 3 or 4 3 or 4 4 4 4 4 4
Flexural modulus $4 $4 $4 $4 $4 $4 $4 $5
Tensile Strength $3 $3 $3 $4 $4 $4 $4 $4
Slow crack growth resistance 6 7 7 6 7 7 7 7
(F1473)
Hydrostatic strength classifica- 3 3 3 4 4 4 4 4
tion
A
Color and UV Stabilizer C or E C or E C or E C or E C or E C or E C or E C or E
B B B B B B B B
HDB at 140°F (60°C), PPI TR-4,
psi (MPa)
HDB at 73°F (23°C), PPI TR-4, 630 (4.34) 630 (4.34) 800 (5.52) 800 (5.52) 800 (5.52) 1000 800 (5.52) 1000
psi (MPa) (6.90) (6.90)
A
See 5.2.
B
Listing required; consult manufacturer for listed value.
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Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Irving, TX 75062, http://www.plasticpipe.org.
D2683 − 20
5.2 Color and Ultraviolet (UV) Stabilization—Polyethylene material compounds shall meet Specification D3350 code C or E.
Code C material compounds shall have 2 to 3 percent carbon black. Code E material compounds shall be colored with UV
stabilizer.
5.3 Rework Material—Clean polyethylene compound from the manufacturer’s own production that met 5.1 and 5.2 as virgin
material is suitable for remolding into fittings, either alone or blended with new compound of the same cell classification or
material designation. Fittings containing the rework material shall meet the material and product requirements of this specification.
6. Requirements
6.1 Dimensions and Tolerances:
6.1.1 Fittings, sockets, dimensions, and tolerances shall be as shown in Table 2 and Table 3 when measured in accordance with
8.4. For reducing fittings, socket and inside diameter minimums for the appropriate size shall apply.
6.1.1.1 Laying Lengths—Laying lengths shall be in accordance with manufacturer’s specifications.
A
TABLE 2 Fittings for Outside Diameter-Controlled Polyethylene Pipe
B C,D
A Socket Entrance Diameter B Socket Bottom Diameter C D
Maximum Maximum Socket
Inside Diameter
Average Tolerance Average Tolerance on
Nominal
Out-of- Out-of- Depth,
Diameter on Diameter Diameter Diameter
Pipe
min max
Round Round min
Size, in.,
in. (mm)
⁄2 0.810 +0.005 ±0.008 0.804 +0.005 ±0.008 0.625 0.648 0.804
(20.57) (+0.127) (±0.203) (20.42) (+0.127) (±0.203) (15.88) (16.46) (20.42)
−0.010 −0.026
(−0.254) (−0.660)
⁄4 1.020 ±0.008 ±0.010 1.012 +0.008 ±0.010 0.625 0.814 1.020
(25.91) (±0.203) (±0.254) (25.70) (+0.203) (±0.254) (15.88) (20.68) (25.91)
−0.012
(−0.305)
1 1.275 ±0.008 ±0.010 1.267 +0.008 ±0.010 0.687 1.020 1.275
(32.38) (±0.203) (±0.254) (32.18) (+0.203) (±0.254) (17.4) (25.91) (32.38)
−0.012
(−0.305)
1 ⁄4 1.620 ±0.008 ±0.012 1.612 +0.008 ±0.012 0.875 1.301 1.620
(41.15) (±0.203) (±0.305) (40.94) (+0.203) (±0.305) (22.22) (33.04) (41.15)
−0.016
(−0.406)
1 ⁄2 1.860 ±0.010 ±0.012 1.849 +0.010 ±0.012 0.875 1.496 1.859
(47.24) (±0.254) (±0.305) (46.96) (+0.254) (±0.305) (22.22) (38.0) (47.22)
−0.020
(−0.508)
2 2.335 ±0.010 ±0.012 2.324 +0.010 ±0.012 0.875 1.885 2.334
(59.31) (±0.254) (±0.305) (59.03) (+0.254) (±0.305) (22.22) (47.88) (59.28)
−0.020
(−0.508)
3 3.455 ±0.015 ±0.015 3.439 +0.015 ±0.015 1.000 2.780 3.454
(87.76) (±0.381) (±0.381) (87.35) (+0.381) (±0.381) (25.4) (70.61) (87.73)
−0.025
(−0.635)
4 4.450 ±0.015 ±0.015 4.434 +0.015 ±0.015 1.125 3.575 4.449
(113.03) (±0.381) (±0.381) (112.62) (+0.381) (±0.381) (28.58) (90.80) (113.00)
−0.035
(−0.889)
A
Minimum dimensions have zero negative tolerance. The sketches and designs of fittings are illustrative only. Entrance chamfer or radius is optional.
B
Measured at top of socket wall taper, just below entrance radius.
C
Dimensions of tools should be checked for consistency with fittings used. Socket bottom diameter must be equal to or smaller than entrance diameter.
D
Measured at bottom of socket wall taper, just above bottom radius.
D2683 − 20
A
TABLE 3 Fittings for Outside Diameter-Controlled Polyethylene Tubing
B C,D
A Socket Entrance Diameter B Socket Bottom Diameter C D
Maximum Maximum Socket
Inside Diameter
Nominal Average Tolerance Average Tolerance on
Out-of- Out-of- Depth,
Tubing Diameter on Diameter Diameter Diameter
min max
Round Round min
Size,in.
in. (mm)
⁄2 0.585 +0.010 ±0.010 0.575 +0.010 ±0.010 0.625 0.500 0.585
(14.86) (+0.25) (±0.25) (14.61) (+0.25) (±0.25) (15.88) (12.70) (14.86)
−0.007 −0.007
(−0.18) (−0.18)
⁄4 0.835 ±0.010 ±0.010 0.825 ±0.010 ±0.010 0.625 0.750 0.835
(21.21) (±0.25) (±0.25) (20.96) (±0.25) (±0.25) (15.88) (19.05) (21.21)
1 1.075 ±0.008 ±0.008 1.070 +0.008 ±0.008 0.625 0.850 1.078
(27.30) (±0.20) (±0.20) (27.18) (+0.20) (±0.20) (15.88) (21.59) (27.38)
−0.012
(−0.30)
1 ⁄4 1.330 ±0.008 ±0.010 1.322 ±0.008 ±0.010 0.687 1.250 1.330
(33.78) (±0.20) (±0.25) (33.58) (±0.20) (±0.25) (17.45) (31.75) (33.78)
A
Minimum dimensions have zero negative tolerance. The sketches and designs of fittings are illustrative only. Entrance chamfer or radius is optional.
B
Measured at top of socket wall taper, just below entrance radius.
C
Dimensions of tools should be checked for consistency with fittings used. Socket bottom diameter must be equal to or smaller than entrance diameter.
D
Measured at bottom of socket wall taper, just above bottom radius.
6.1.2 The maximum angular variation of any opening shall not be more than 2° off the true centerline axis.
6.1.3 The minimum wall thickness of fittings shall be 125 % of the minimum wall thickness of the pipe with which they are
designed to be joined. For reducing fittings, the smallest size wall thickness shall be 125 % of the smallest pipe wall.
6.2 System Pressure Test Requirements:
6.2.1 Short-Term Rupture Strength—The minimum short-term rupture strength of the fitting and fused pipe shall not be less than
the minimum short-term rupture strength of the pipe or tubing in the system when tested in accordance with 8.5.2. The test
pressures shall be as shown in Table 4. Test specimens shall be prepared for testing as described in 8.5.1.
6.2.2 Sustained Pressure—The fitting(s) and fused pipe or tubing shall not fail (as defined in the Descriptions of Terms Section
TABLE 4 Quick Burst Minimum Hoop Stress Requirements for
A ,B
Water At 73°F (23°C) for SDR-PR PE Plastic Pipe Fittings
Material psi (MPa)
Density Class 2 materials 2500 (17.24)
Density Class 3 and 4 materials 2900 (20.00)
A
For outside diameter controlled pipe, calculate internal test pressure in accor-
dance with the following formula:
2S
P 5
D
o
S D
t
Where:
P = test pressure, psig (kPa)
S = test pressure hoop stress, psi. (kPa)
D = measured outside diameter, in. (mm), and
O
t = measured mini
...