ASTM F2261-06(2023)
(Test Method)Standard Test Method for Pressure Rating Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 and 80 Socket-Type
Standard Test Method for Pressure Rating Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 and 80 Socket-Type
SIGNIFICANCE AND USE
4.1 The procedure for establishing the long-term pressure rating of fittings starts with an extrapolation of a regression line that is based on fitting failure data with respect to time, when assemblies are tested in accordance with Test Method D1598. The pressure-versus time to failure data are obtained using water at 73 °F in assemblies that are immersed in a water or air environment. The extrapolation is made in such a manner that the long-term hydrostatic pressure rating is determined for these conditions.
4.2 The pressure design basis is determined by considering the following items and evaluating them in accordance with 6.3.
4.2.1 Long-term hydrostatic pressure-strength at 100 000 h,
4.2.2 Long-term hydrostatic pressure-strength at 50 years
4.3 The fitting pressure rating may be calculated by multiplying the pressure design basis (PDB) by the appropriate design factor (DF).
SCOPE
1.1 This test method covers a procedure for establishing Pressure Rating for PVC schedule 40 and 80 socket-type fittings by evaluating fitting failure test data derived by testing water-filled assemblies of pipe and fittings.
1.2 Unless the data approximates a straight line, when calculated using log-log coordinates, it is not possible to assign a pressure rating to that product or sample of product. Data that exhibit high scatter, or a downward curve, due to low long term data, will give low extrapolated values that are more conservative when calculated using log-log co-ordinates. In addition, this downward curve will show as higher scatter, and where the lower confidence level limits are not met the data shall be classified as unsuitable. (See Note 1)
Note 1: This test method is similar to that used in Test Method D2837, which has been used for about 30 years to establish the HDS of plastic pipe materials and is the basis for all pressure ratings assigned to plastic pipes.
1.3 The products covered by this test method are schedule 40 or 80 molded PVC fittings that conform to Specifications D2466 or D2467.
1.4 The pressure ratings developed using this test method applies only to fittings identical to the ones that were tested. Some variables that will affect the pressure rating are – pipe size, pattern, mold design, material, and molding conditions.
1.5 The values in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6 The testing procedure used to obtain the fitting failure data shall be as described in those sections of Test Method D1598, that are referenced in Section 6 of this test method.
1.7 The products covered by this test method are intended for use in the distribution of pressurized liquids at 73 °F. When appropriate, the design engineer must consider the effects of elevated temperature and chemical compatibility of the liquid with the fitting material and apply necessary design factors.
1.8 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.
Note 2: Pressurized (compressed) air or other compressed gases contain large amounts of stored energy which present serious safety hazards should a system fail for any reason.
1.9 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.
General Information
Relations
Standards Content (Sample)
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.
Designation: F2261 − 06 (Reapproved 2023)
Standard Test Method for
Pressure Rating Poly(Vinyl Chloride) (PVC) Plastic Pipe
Fittings, Schedule 40 and 80 Socket-Type
This standard is issued under the fixed designation F2261; 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 appropriate, the design engineer must consider the effects of
elevated temperature and chemical compatibility of the liquid
1.1 This test method covers a procedure for establishing
with the fitting material and apply necessary design factors.
Pressure Rating for PVC schedule 40 and 80 socket-type
1.8 This standard does not purport to address all of the
fittings by evaluating fitting failure test data derived by testing
safety concerns, if any, associated with its use. It is the
water-filled assemblies of pipe and fittings.
responsibility of the user of this standard to establish appro-
1.2 Unless the data approximates a straight line, when
priate safety, health, and environmental practices and deter-
calculated using log-log coordinates, it is not possible to assign
mine the applicability of regulatory limitations prior to use.
a pressure rating to that product or sample of product. Data that
exhibit high scatter, or a downward curve, due to low long term NOTE 2—Pressurized (compressed) air or other compressed gases
contain large amounts of stored energy which present serious safety
data, will give low extrapolated values that are more conser-
hazards should a system fail for any reason.
vative when calculated using log-log co-ordinates. In addition,
1.9 This international standard was developed in accor-
this downward curve will show as higher scatter, and where the
dance with internationally recognized principles on standard-
lower confidence level limits are not met the data shall be
ization established in the Decision on Principles for the
classified as unsuitable. (See Note 1)
Development of International Standards, Guides and Recom-
NOTE 1—This test method is similar to that used in Test Method D2837,
mendations issued by the World Trade Organization Technical
which has been used for about 30 years to establish the HDS of plastic
Barriers to Trade (TBT) Committee.
pipe materials and is the basis for all pressure ratings assigned to plastic
pipes.
2. Referenced Documents
1.3 The products covered by this test method are schedule
2.1 ASTM Standards:
40 or 80 molded PVC fittings that conform to Specifications
D1598 Test Method for Time-to-Failure of Plastic Pipe
D2466 or D2467.
Under Constant Internal Pressure
1.4 The pressure ratings developed using this test method
D2466 Specification for Poly(Vinyl Chloride) (PVC) Plastic
applies only to fittings identical to the ones that were tested.
Pipe Fittings, Schedule 40
Some variables that will affect the pressure rating are – pipe
D2467 Specification for Poly(Vinyl Chloride) (PVC) Plastic
size, pattern, mold design, material, and molding conditions.
Pipe Fittings, Schedule 80
1.5 The values in inch-pound units are to be regarded as the D2837 Test Method for Obtaining Hydrostatic Design Basis
standard. The values given in parentheses are mathematical for Thermoplastic Pipe Materials or Pressure Design Basis
conversions to SI units that are provided for information only for Thermoplastic Pipe Products
and are not considered standard. 2.2 Other Standards:
PPI Report– TR-4 – HDB/SDB/PDB/MRS Listed Materials
1.6 The testing procedure used to obtain the fitting failure
data shall be as described in those sections of Test Method
3. Terminology
D1598, that are referenced in Section 6 of this test method.
3.1 Definitions of Terms Specific to This Standard:
1.7 The products covered by this test method are intended
3.1.1 failure—the act, state, or fact of failing, specifically a
for use in the distribution of pressurized liquids at 73 °F. When
lost of strength or breakdown of function
1 2
This test method is under the jurisdiction of ASTM Committee F17 on Plastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Methods. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Feb. 1, 2023. Published February 2023. Originally the ASTM website.
approved in 2006. Last previous edition approved in 2018 as F2261–06(2018) DOI: Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825,
10.1520/F2261-06R23. Irving, TX 75062, http://www.plasticpipe.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2261 − 06 (2023)
modify the curing procedure or cure time in order to eliminate or minimize
3.1.1.1 Discussion—for testing purposes, failure is the
the joint failures.
bursting, cracking or weeping of the fitting
3.1.2 LTHS —the estimated internal pressure that when
p 6. Procedure
applied continuously will cause failure of the fitting at 100 000
6.1 General—Generate data in accordance with Test
h. This is the intercept of the pressure regression line with the
Method D1598 Sections 6 Apparatus, 8. Conditioning and 9.
100 000-h intercept.
Procedure. When any part of this test method is not in
3.1.3 pressure design basis (PDB)—one of a series of
agreement with those sections of Test Method D1598, the
established pressure values for plastic piping components
provisions of this test method shall control.
(multilayer pipe, fitting, valve, etc.) obtaining by categorizing
6.2 Pressure-versus Time Data—Obtain a minimum of 18
the LTHS in accordance with Table 2 of Specification D2837.
p
fitting-failure data points distributed as follows. Use water as
3.1.4 pressure rating (PR)—the estimated maximum con-
the te
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.