ASTM D2713-13
(Test Method)Standard Test Method for Dryness of Propane (Valve Freeze Method)
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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D2713 − 13
Designation:395/98
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* body.After cooling, the test valve is partially closed to a small
preset flow rate and the time required for the valve to freeze,
1.1 This test method covers the measurement of the dryness
due to water dissolved in the sample and thus interrupt the
of propane products that do not contain antifreeze agents such
normal flow, is recorded. Higher dissolved water concentra-
as, but not limited to, commercial propane and special duty
tions will result in shorter freeze-off times. The average
propane (see Specification D1835).
observed time for several successive observations is recorded
1.2 The values stated in SI units are to be regarded as the
as the observed valve freeze time.
standard. The values in parentheses are for information only.
5. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 This test is a functional test in which the water concen-
responsibility of the user of this standard to establish appro-
tration in the product is related to product behavior character-
priate safety and health practices and determine the applica-
istics in a pressure-reducing system of special design to arrive
bility of regulatory limitations prior to use.
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 s, for a propane water
products to cause freezing in pressure-reducing regulators.
test valve to freeze under the conditions of this test method.
7. Apparatus
3.1.2 propane water test valve, n—a specific valve designed
3
and manufactured for performing in this test method.
7.1 Propane Water Test Valve —Aspeciallyconstructedand
calibrated valve manufactured solely for this test (Note 1). The
3.1.3 valve freeze, adj—relating to the procedure for deter-
mining the dryness of propane for this test method. valvehastwoopenpositions,awideopenpositionforflushing,
and a small preset flow position for testing.
4. Summary of Test Method
NOTE 1—The propane water test valve is a precision instrument and it
4.1 A liquid-phase sample of the product to be tested is should be so treated. It should not be dropped, strained in any way, or
disassembled, except to clean the filter in accordance with the manufac-
flowed through the propane water test valve to cool the valve
turer’s instructions. Valves suspected of being defective should be
returned to the manufacturer for inspection, reconditioning or recalibra-
tion.
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
7.2 Stop Watch or Timer, measuring in seconds.
Subcommittee D02.H0 on Liquefied Petroleum Gas.
Current edition approved Oct. 1, 2013. Published October 2013. Originally 7.3 LP Gas Sample Cylinder, having a minimum capacity of
approved in 1968. Last previous edition approved in 2012 as D2713 – 12. DOI:
11 L (3 U.S. gal).
10.1520/D2713-13.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on Supporting data have been filed at ASTM International Headquarters and may
the ASTM website. be obtained by requesting Research Report RR:D02-1423.
*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
1
---------------------- Page: 1 ----------------------
D2713 − 13
NOTE 2—For information, liquid propane stops flowing through the test
7.4 Cloth, dry, clean.
valvewhenfrostformsontheinternal
...
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: D2713 − 12 D2713 − 13
Designation: 395/98
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*
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 and health practices and determine the applicability of regulatory
limitations prior to use.
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 s, 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.
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.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.H0 on Liquefied Petroleum Gas.
Current edition approved April 15, 2012Oct. 1, 2013. Published May 2012October 2013. Originally approved in 1968. Last previous edition approved in 20112012 as
D2713D2713 – 12.–11. DOI: 10.1520/D2713-12.10.1520/D2713-13.
2
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2713 − 13
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—The propane water test valve is a precision instrument and it should be so treated. It should not be dropped, strained in any way, or
disassembled, except to clean the filter in accordance with the manufacturer’s instructions. Valves suspected of being defective should be returned to the
manufacturer for inspection, reconditioning or recalibration.
7.2 Stop Watch or Timer, measuri
...
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