ASTM D2713-20

Standard Test Method for Dryness of Propane (Valve Freeze Method)

SIGNIFICANCE AND USE
5.1 This test is a functional test in which the water concentration in the product is related to product behavior characteristics in a pressure-reducing system of special design to arrive at a measure of product acceptability in common use applications. Experience has demonstrated that excessive water content (dissolved water) will cause freeze-up difficulties in pressure reducing systems.
SCOPE
1.1 This test method covers the measurement of the dryness of propane products that do not contain antifreeze agents such as, but not limited to, commercial propane and special duty propane (see Specification D1835).  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 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.  
1.4 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.

General Information

• Status: Published
• Publication Date: 30-Apr-2020
• ICS: 71.100.20 - Gases for industrial application
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.H0 - Liquefied Petroleum Gas

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: D2713 − 20
Standard Test Method for
1
Dryness of Propane (Valve Freeze Method)
This standard is issued under the fixed designation D2713; 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* 3.1.3 valve freeze, adj—relating to the procedure for deter-
mining the dryness of propane for this test method.
1.1 This test method covers the measurement of the dryness
of propane products that do not contain antifreeze agents such
4. Summary of Test Method
as, but not limited to, commercial propane and special duty
4.1 A liquid-phase sample of the product to be tested is
propane (see Specification D1835).
flowed through the propane water test valve to cool the valve
1.2 The values stated in SI units are to be regarded as the
body.After cooling, the test valve is partially closed to a small
standard. The values in parentheses are for information only.
preset flow rate and the time required for the valve to freeze,
1.3 This standard does not purport to address all of the
due to water dissolved in the sample and thus interrupt the
safety concerns, if any, associated with its use. It is the
normal flow, is recorded. Higher dissolved water concentra-
responsibility of the user of this standard to establish appro-
tions will result in shorter freeze-off times. The average
priate safety, health, and environmental practices and deter-
observed time for several successive observations is recorded
mine the applicability of regulatory limitations prior to use.
as the observed valve freeze time.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
5.1 This test is a functional test in which the water concen-
Development of International Standards, Guides and Recom-
tration in the product is related to product behavior character-
mendations issued by the World Trade Organization Technical
istics in a pressure-reducing system of special design to arrive
Barriers to Trade (TBT) Committee.
at a measure of product acceptability in common use applica-
tions. Experience has demonstrated that excessive water con-
2. Referenced Documents
tent (dissolved water) will cause freeze-up difficulties in
2
2.1 ASTM Standards:
pressure reducing systems.
D1265 Practice for Sampling Liquefied Petroleum (LP)
Gases, Manual Method 6. Interferences
D1835 Specification for Liquefied Petroleum (LP) Gases
6.1 Antifreeze agents will interfere with this test method
and can indicate that the product is drier than it really is.
3. Terminology
However, the relative freeze-off times of such materials tested
3.1 Definitions of Terms Specific to This Standard: by this procedure can be an indication of the tendency of these
3.1.1 freeze-off time, n—the time, in seconds, for a propane products to cause freezing in pressure-reducing regulators.
water test valve to freeze under the conditions of this test
7. Apparatus
method.
3
7.1 Propane Water Test Valve —Aspeciallyconstructedand
3.1.2 propane water test valve, n—a specific valve designed
and manufactured for performing in this test method. calibrated valve manufactured solely for this test (Note 1). The
valvehastwoopenpositions,awideopenpositionforflushing,
and a small preset flow position for testing.
1
This test method is under the jurisdiction of ASTM Committee D02 on
NOTE 1—The propane water test valve is a precision instrument and it
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
should be so treated. It should not be dropped, strained in any way, or
Subcommittee D02.H0 on Liquefied Petroleum Gas.
disassembled, except to clean the filter in accordance with the manufac-
Current edition approved May 1, 2020. Published May 2020. Originally
turer’s instructions. Valves suspected of being defective should be
ɛ1
approved in 1968. Last previous edition approved in 2015 as D2713 – 15 . DOI:
10.1520/D2713-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Supporting data have been filed at ASTM International Headquarters and may
Standards volume information, refer to the standard’s Document Summary page on beobtainedbyrequestingResearchReportRR:D02-1423.ContactASTMCustomer
the ASTM website. Service at [e-mail].
*A Summary of Changes section appears at the end o
...

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.
´1
Designation: D2713 − 15 D2713 − 20
Standard Test Method for
1
Dryness of Propane (Valve Freeze Method)
This standard is issued under the fixed designation D2713; 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
ε NOTE—The IP logo was removed editorially in July 2018.
1. Scope*
1.1 This test method covers the measurement of the dryness of propane products that do not contain antifreeze agents such as,
but not limited to, commercial propane and special duty propane (see Specification D1835).
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.3 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.
1.4 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
2.1 ASTM Standards:
D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method
D1835 Specification for Liquefied Petroleum (LP) Gases
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 freeze-off time, n—the time, in seconds, for a propane water test valve to freeze under the conditions of this test method.
3.1.2 propane water test valve, n—a specific valve designed and manufactured for performing in this test method.
3.1.3 valve freeze, adj—relating to the procedure for determining the dryness of propane for this test method.
4. Summary of Test Method
4.1 A liquid-phase sample of the product to be tested is flowed through the propane water test valve to cool the valve body. After
cooling, the test valve is partially closed to a small preset flow rate and the time required for the valve to freeze, due to water
dissolved in the sample and thus interrupt the normal flow, is recorded. Higher dissolved water concentrations will result in shorter
freeze-off times. The average observed time for several successive observations is recorded as the observed valve freeze time.
5. Significance and Use
5.1 This test is a functional test in which the water concentration in the product is related to product behavior characteristics
in a pressure-reducing system of special design to arrive at a measure of product acceptability in common use applications.
Experience has demonstrated that excessive water content (dissolved water) will cause freeze-up difficulties in pressure reducing
systems.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.H0 on Liquefied Petroleum Gas.
Current edition approved July 1, 2015May 1, 2020. Published July 2015May 2020. Originally approved in 1968. Last previous edition approved in 20132015 as
ɛ1
D2713 – 13.D2713 – 15 . DOI: 10.1520/D2713-15E01.10.1520/D2713-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D2713 − 20
6. Interferences
6.1 Antifreeze agents will interfere with this test method and can indicate that the product is drier than it really is. However,
the relative freeze-off times of such materials tested by this procedure can be an indication of the tendency of these products to
cause freezing in pressure-reducing regulators.
7. Apparatus
3
7.1 Propane Water Test Valve —A specially constructed and calibrated valve manufactured solely for this test (Note 1). The
valve has two open positions, a wide open position for flushing, and a small preset flow position for testing.
NOTE 1—T
...