ASTM F1802-04(2010)
(Test Method)Standard Test Method for Performance Testing of Excess Flow Valves
Standard Test Method for Performance Testing of Excess Flow Valves
SIGNIFICANCE AND USE
This test method is intended to be used for the evaluation of EFVs manufactured for use on residential and small commercial thermoplastic natural gas service lines. Possible applications of the test include product design and quality control testing by a manufacturer and product acceptance testing by a natural gas utility.
The user of this test method should be aware that the flows and pressures measured in the test apparatus may not correlate well with those measured in a field installation. Therefore, the user should conduct sufficient tests to ensure that any specific EFV will carry out its intended function in the actual field installation used.
SCOPE
1.1 This test method covers a standardized method to determine the performance of excess flow valves (EFVs) designed to limit flow or stop flow in thermoplastic natural gas service lines.
1.2 All tests are intended to be performed using air as the test fluid. Unless otherwise stated, all flow rates are reported in standard cubic feet per hour of 0.6 relative density natural gas.
1.3 The test method recognizes two types of EFV. One type, an excess flow valve-bypass (EFVB), allows a small amount of gas to bleed through (bypass) after it has tripped, usually as a means of automatically resetting the device. The second type, an excess flow valve-non bypass (EFVNB), is intended to trip shut forming an essentially gas tight seal.
1.4 The performance characteristics covered in this test method include flow at trip point, pressure drop across the EFV, bypass flow rate of the EFVB or leak rate through the EFVNB after trip, and verification that the EFV can be reset.
1.4.1 Gas distribution systems may contain condensates and particulates such as organic matter, sand, dirt, and iron compounds. Field experience has shown that the operating characteristics of some EFVs may be affected by accumulations of these materials. The tests of Section 11 were developed to provide a simple, inexpensive, reproducible test that quantifies the effect, if any, of a uniform coating of kerosene and of kerosene contaminated with a specified amount of ferric oxide powder on an EFV's operating characteristics.
1.5 Excess flow valves covered by this test method will normally have the following characteristics: a pressure rating of up to 125 psig (0.86 MPa); a trip flow of between 200 and 2500 ft3/h (5.66 and 70.8 m3/h) at 10 psig (0.07 MPa); a minimum temperature rating of 0°F(–18°C), and a maximum temperature rating of 100°F (38°C).
1.6 The EFVs covered by this test method shall be constructed to fit piping systems no smaller than 1/2CTS and no larger than 11/4IPS, including both pipe and tubing sizes.
1.7 Tests will be performed at 67 ± 10°F (19.4 ± 5.5°C). Alternative optional test temperatures are 100 ± 10°F (37.7 ± 5.5°C) and 0 ± 10°F (–18 ± 5.5°C). All flow rates must be corrected to standard conditions.
1.8 This test method was written for EFVs installed in thermoplastic piping systems. However, it is expected that the test method may also be used for similar devices in other piping systems.
1.9 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.
1.10 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. For specific precautions, see Section 8.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F1802 − 04(Reapproved 2010)
Standard Test Method for
Performance Testing of Excess Flow Valves
This standard is issued under the fixed designation F1802; 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.
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1. Scope 2500 ft /h (5.66 and 70.8 m /h) at 10 psig (0.07 MPa); a
minimum temperature rating of 0°F(–18°C), and a maximum
1.1 This test method covers a standardized method to
temperature rating of 100°F (38°C).
determine the performance of excess flow valves (EFVs)
designed to limit flow or stop flow in thermoplastic natural gas
1.6 The EFVs covered by this test method shall be con-
service lines.
structed to fit piping systems no smaller than ⁄2 CTS and no
larger than 1 ⁄4 IPS, including both pipe and tubing sizes.
1.2 All tests are intended to be performed using air as the
test fluid. Unless otherwise stated, all flow rates are reported in
1.7 Tests will be performed at 67 6 10°F (19.4 6 5.5°C).
standard cubic feet per hour of 0.6 relative density natural gas.
Alternative optional test temperatures are 100 6 10°F (37.7 6
1.3 The test method recognizes two types of EFV. One type, 5.5°C) and 0 6 10°F (–18 6 5.5°C). All flow rates must be
anexcessflowvalve-bypass(EFVB),allowsasmallamountof corrected to standard conditions.
gas to bleed through (bypass) after it has tripped, usually as a
1.8 This test method was written for EFVs installed in
means of automatically resetting the device. The second type,
thermoplastic piping systems. However, it is expected that the
an excess flow valve-non bypass (EFVNB), is intended to trip
test method may also be used for similar devices in other
shut forming an essentially gas tight seal.
piping systems.
1.4 The performance characteristics covered in this test
1.9 The values stated in inch-pound units are to be regarded
method include flow at trip point, pressure drop across the
as standard. The values given in parentheses are mathematical
EFV, bypass flow rate of the EFVB or leak rate through the
conversions to SI units that are provided for information only
EFVNB after trip, and verification that the EFV can be reset.
and are not considered standard.
1.4.1 Gas distribution systems may contain condensates and
particulates such as organic matter, sand, dirt, and iron com-
1.10 This standard does not purport to address all of the
pounds. Field experience has shown that the operating charac-
safety concerns, if any, associated with its use. It is the
teristics of some EFVs may be affected by accumulations of
responsibility of the user of this standard to establish appro-
these materials. The tests of Section 11 were developed to
priate safety and health practices and determine the applica-
provide a simple, inexpensive, reproducible test that quantifies
bility of regulatory limitations prior to use. For specific
the effect, if any, of a uniform coating of kerosene and of
precautions, see Section 8.
kerosene contaminated with a specified amount of ferric oxide
powder on an EFV’s operating characteristics.
2. Referenced Documents
1.5 Excess flow valves covered by this test method will 3
2.1 ASTM Standards:
normally have the following characteristics: a pressure rating
D1600 TerminologyforAbbreviatedTermsRelatingtoPlas-
of up to 125 psig (0.86 MPa); a trip flow of between 200 and
tics
F412 Terminology Relating to Plastic Piping Systems
2.2 ANSI Standard:
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
B31.8 Gas Transmission and Distribution Piping Systems
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test
Methods.
Current edition approved Aug. 1, 2010. Published November 2010. Originally
approved in 1995 as PS 13–95. Last previous edition approved in 2004 as
F1804–04. DOI: 10.1520/F1802-04R10. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
This contamination test procedure may be utilized to determine the effect, if contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
any, of contaminants from a specific gas distribution system on the operational Standards volume information, refer to the standard’s Document Summary page on
characteristics of an EFV under consideration for use in that system. Condensates, the ASTM website.
oils and particulates removed from that distribution system could be substituted for Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
keroseneandironoxide.Resultsobtainedfromusingreagentsorcontaminantsother 4th Floor, New York, NY 10036.Available from American National Standards
than those specified in this test method must not be used in comparison with results Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://
obtained using the reagents specified in this test method. www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1802 − 04 (2010)
2.3 Federal Specification: 3.2.3 leak rate, n—the flow of test fluid passing through an
DOT Part 192 Title 49 Code of Federal Regulations EFVNB after it has been activated or tripped.
3.2.4 Piezometer ring, n—a device installed at a pressure
3. Terminology
measurement point in a flowing gas stream intended to
3.1 Definitions:
eliminate the effect of the flowing gas on the measurement
3.1.1 General—Definitions are in accordance with Termi-
device. See Appendix X1.
nology F412, unless otherwise specified. Abbreviations are in
3.2.5 pipe, n—refers to both pipe and tubing.
accordance with Terminology D1600.
3.2.6 standard conditions, n—for gas flow conversion, 0.6
3.1.2 The gas industry terminology used in this test method
relative density natural gas at 14.7 psia (0.1 MPa) and 60°F
is in accordance with ANSI B31.8 or DOT Part 192 Title 49,
(16.6 °C).
unless otherwise indicated.
3.2.7 trip, n—activationofthemechanismofanEFVtostop
3.2 Definitions of Terms Specific to This Standard:
or limit the flow of natural gas in the service line.
3.2.1 bypass flow, n—the flow through an EFVB after it has
3.2.8 trip flow, n—theflowpassingthroughanEFVrequired
been activated or tripped.
to cause its activation to stop or limit flow.
3.2.2 excess flow valve (EFV), n—a device installed in a
natural gas service line having the ability to automatically stop
4. Summary of Test Method
or limit the flow of gas in the event that the flow in the service
4.1 For all tests, air is intended to be the test fluid.All flows
line exceeds a predetermined level.
are given in cubic feet per hour of 0.6 relative density natural
3.2.2.1 excess flow valve-bypass (EFVB), n—an EFV de-
gas, unless otherwise specified.All tests are to be performed at
signed to limit the flow of gas upon closure to a small
67 610°F(19.4 65.5°C),withalternativetesttemperaturesof
predetermined level. The EFVBs reset automatically, once the
0 and 100°F (–17.7 and 37.7°C). All flow rates must be
service line downstream is made gas tight and pressure is
corrected to standard conditions using the temperature of the
equalized across the valve.
air flow measured just upstream of the flowmeter (T)in Fig.
3.2.2.2 excess flow valve-non bypass (EFVNB), n—an EFV
1.
which is designed to stop the flow of gas upon closure. The
4.2 The EFV is installed in the standardized test apparatus
EFVNBs must be manually reset.
shown in Fig. 1. This apparatus provides regulated inlet
pressure, pressure measurement at specified locations, tem-
perature measurement, flow measurement, and flow control.
Available from Superintendent of Documents, U.S. Government Printing
Four discrete tests are performed on each sample, as follows:
Office, 732 N. Capitol Street, NW, Washington, DC 20402.
FIG. 1 Test Apparatus For Excess Flow Valves
F1802 − 04 (2010)
4.2.1 Trip Flow Rate—The EFV is installed in the test essential in pipes with flowing gas in them. Appendix X1
apparatus and the flow control valve is slowly opened. At the shows the dimensions for construction of a Piezometer ring.
trip point, the inlet pressure and flow rate are recorded.
6.4 Pressure and Differential Pressure Gages:
4.2.2 Bypass or Leak Rate—After completion of trip flow
6.4.1 Each air pressure gage or differential pressure gage
rate test, the flow past the tripped device is measured on
shall measure the range of pressures at its location in the test
Flowmeter2.ForanEFVB,thisflowisthebypassflow.Foran
apparatus to an accuracy within 62%.
EFVNB, this flow is the leak rate.
6.4.2 Differential pressure gages shall be rated for pressures
4.2.3 Pressure Drop at Flow Rates Less than Closure—after
above the maximum encountered in the application.
setting the inlet pressure to the desired value, pressure drop
NOTE 1—Do not use “snubs” on pressure gages.
measurementsshallbetakenateachofthefollowingflowrates
that are less than the valve’s minimum closure flow rate: 100,
6.5 Flowmeters:
200, 300, 400, 500, 750, 1000, 1250, and 1500 SCFH (2.8, 5.6,
6.5.1 Each flowmeter shall measure the range of flows at its
8.5, 11.32, 14.2, 21.24, 28.3, 35.4, and 42.5 M /h).
location in the test apparatus to an accuracy within 62%,
4.2.4 Reset—Following the manufacturer’s instructions,
traceabletotheNationalInstituteofStandardsandTechnology.
verify that the EFV can be reset.
Note that flowmeter accuracy is usually expressed as a percent
of the full scale reading. Therefore, to maintain accuracy it is
5. Significance and Use
generally advisable to operate the meter at as high a flow as
possible.
5.1 This test method is intended to be used for the evalua-
6.5.2 Each flowmeter shall have manufacturer supplied
tion of EFVs manufactured for use on residential and small
correction factors for conversion of air flow rates measured at
commercial thermoplastic natural gas service lines. Possible
the metering pressure and temperature to corrected flow rates
applications of the test include product design and quality
of 0.6 relative density natural gas at standard conditions. Some
control testing by a manufacturer and product acceptance
users have found it convenient to use flowmeters calibrated to
testing by a natural gas utility.
measure air, but that indicate flow rates for natural gas.
5.2 The user of this test method should be aware that the
6.5.3 Flowmeters shall not generate pressure or flow fluc-
flows and pressures measured in the test apparatus may not
tuations in the flowing air stream that could adversely affect
correlate well with those measured in a field installation.
either the measurement of these values or the operation of the
Therefore, the user should conduct sufficient tests to ensure
EFV.
that any specific EFVwill carry out its intended function in the
6.5.4 Flowmeters shall be easy to clean and to keep clean.
actual field installation used.
6.5.5 Flow Control Valve B—This valve, as it is moved
from full closed to full open, shall be capable of producing a
6. Apparatus
uniformly increasing air flow. An NPS 1 valve such as a full
6.1 Test Apparatus, (See Fig. 1) consisting of a compressed
port globe or gate valve or automated flow device have been
airsupply,valves,flowmeters,Piezometerringslocatedateach
found satisfactory.
pressure test point, pressure gages, and thermocouples.
6.5.6 Inlet ValveA, Bypass Valves D, E, F, and Flow Control
6.1.1 The size and capabilities of the test system should be
Valve C—These shall be full port NPS 1 valves.
selected to meet the needs of the application.Atest system for
6.6 Piping—Using Schedule 40, NPS 1 steel for inlet and
EFVsofonesizeandasinglepressurerangemaybemuchless
outlet piping and associated fittings for the EFV.
sophisticated than one designed for a wide range of sizes and
multiple operating pressure ranges. 6.7 Thermocouple—Three thermocouples are required and
shall measure temperature to an accuracy of 63°F (1.7°C).
6.2 Compressed Air Supply System:
One shall be installed so as to measure the temperature of the
6.2.1 The air supply system shall be able to provide clean
EFV being tested. Two shall be installed in the flowing air
dry air at the required test temperature for a time sufficient to
stream to measure the temperature immediately upstream of
obtain a test data point at the highest test pressure and at the
Flowmeter 1, and immediately upstream of the EFVunder test.
maximum flow rate of the EFV being tested. Such a require-
ment may be met either by a low-volume compressor and a 6.8 Temperature Control—The apparatus to control test
temperature shall be such that the temperature of the EFV(T1)
large pressure vessel or by a high-volume compressor and a
smaller pressure vessel. and of the air flow measured by the thermocouple upstream of
the flowmeter (T3) shall be within 610°F of 67°F (5.5°C of
6.2.2 Thistestmethodisintendedformaximumairflowsup
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to 2500 ft /h (70.8 m /h). However, for many applications, a 19.4°C). For testing at 0°F (–17.7°C) and at 100°F (37.7°C),
thetemperatureoftheEFV(T1)shallbewithin 610°F(5.5°C)
nominal requirement would be for an air flow of 1000 ft /h
(28.32 m /h) at a pressure of 100 psig (0.7 MPa) for a period ofthetesttemperature.ThetestapparatusandtestEFVshallbe
of 60 s. insulated as appropriate so as to maintain the test temperature.
6.3 Piezometer Rings: 6.9 Reset Volume—A60 ft (18.28 m) long coil of ⁄2 CTS
6.3.1 A Piezometer ring shall be used at each pressure test 0.090 in. ( ⁄3 mm) wall PE tubing or pipe with an equivalent
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point as shown in Fig. 1. volume of 112 in. (1,835 cm ).The inside coil radius shall not
6.3.2 Piezometer rings are designed to provide a flow- be less than 16 in. (406.4 mm) (minimum bend radius = 25
independent measurement of the pressure in a pipe. They are times the outside tube diameter).
F1802 − 04 (2010)
7. Sample Preparation a suitable pressure rating is placed downstream of the EFV
location. (A“dummy” EFV may be used to prevent damage to
7.1 The user of this test method will select the EFV
the test sample.) After the purge, disassemble the filter and
configuration to be tested. However, the configuration will
inspect for visible contamination. If contaminants are present,
affect the test results. For example, the pressure drop and the
the system, flow elements, and filter shall be cleaned and the
trip-flow rate values will be different when the EFV is inserted
procedure repeated until no contaminants are present.
in a straight length of thermoplastic pipe, as compared to an
10.2.2 EFV Sample Inspection:
EFV inserted in the outlet of a thermoplastic punch tee. This
10.2.2.1 Install the EFV in th
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