Standard Specification for Pressure-Reducing Manifolds for Air or Nitrogen Systems

ABSTRACT
This specification covers the design, construction, testing and operating requirements for pressure-reducing manifolds for air or nitrogen systems, which constitute the combination of all components and piping between, and including, the inlet and outlet ports. The manufactured manifolds shall perform satisfactorily to the following procedures: visual examination; hydrostatic shell test; relief-valve lift test; seat tightness test; and external leakage test.
SCOPE
1.1 This specification covers the design, construction, testing and operating requirements for pressure-reducing manifolds for air or nitrogen systems, referred to herein also as manifolds. The term manifold constitutes the combination of all components and piping between, and including, the inlet and outlet ports (see Fig. 1 and Fig. 2).  
FIG. 1 Manifold Configuration  
FIG. 2 Manifold Configuration  
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 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.

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Published
Publication Date
30-Apr-2019
Current Stage
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ASTM F1685-00(2019) - Standard Specification for Pressure-Reducing Manifolds for Air or Nitrogen Systems
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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: F1685 −00 (Reapproved 2019) An American National Standard
Standard Specification for
1
Pressure-Reducing Manifolds for Air or Nitrogen Systems
This standard is issued under the fixed designation F1685; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 2.3 Military Standards and Specifications:
MIL-STD-167-1 Mechanical Vibrations of Shipboard
1.1 This specification covers the design, construction, test-
Equipment (Type I—Environmental and Type II— Inter-
ing and operating requirements for pressure-reducing mani-
nally Excited)
folds for air or nitrogen systems, referred to herein also as
MIL-STD-740AirborneandStructureborneNoiseMeasure-
manifolds. The term manifold constitutes the combination of
ments and Acceptance Criteria of Shipboard Equipment
all components and piping between, and including, the inlet
MS16142Boss, Gasket Seal Straight Thread Tube Fitting,
and outlet ports (see Fig. 1 and Fig. 2).
Standard Dimensions for
1.2 Thevaluesstatedininch-poundunitsaretoberegarded
MIL-S-901Shock Tests, H.I. (High-Impact); Shipboard
as standard. The values given in parentheses are mathematical
Machinery, Equipment and Systems, Requirements for
conversions to SI units that are provided for information only
MIL-F-1183Fittings, Pipe, Cast Bronze, Silver-Brazing,
and are not considered standard.
General Specification for
4
1.3 This international standard was developed in accor-
2.4 Government Drawings:
dance with internationally recognized principles on standard-
Naval Sea Systems Command (NAVSEA):
ization established in the Decision on Principles for the
NAVSEA803-1385884Unions, Fittings and Adapters Butt
Development of International Standards, Guides and Recom-
and Socket Welding 6000 PSI, WOG and OXY (IPS)
mendations issued by the World Trade Organization Technical
NAVSEA803-1385943Unions, Silver Brazing 3000 PSI,
Barriers to Trade (TBT) Committee.
WOG, IPS, for UT Inspection
NAVSEA 803-1385946 Unions, Bronze, Silver Brazing,
2. Referenced Documents
WOG for UT Inspection, 1500 PSI, WOG
2
2.1 ASTM Standards:
F992Specification for Valve Label Plates 3. Terminology
F1508Specification forAngle Style, Pressure Relief Valves
3.1 Definitions:
for Steam, Gas, and Liquid Services
3.1.1 accuracy of regulation, n—the amount by which the
F1795Specification for Pressure-ReducingValves forAir or
downstreampressuremayvarywhenthemanifoldissetatany
Nitrogen Systems
pressurewithintherequiredsetpressurerangeandissubjected
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2.2 ASME Standard:
to any combination of inlet pressure, flow demand, and
B1.1Unified Inch Screw Threads
ambient temperature variations within the specified limits.
3.1.2 bubble-tight, n—no visible leakage over a 5-min
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This specification is under the jurisdiction ofASTM Committee F25 on Ships
period using either water submersion or the application of
and Marine Technology and is under the direct responsibility of Subcommittee
bubble fluid for detection.
F25.11 on Machinery and Piping Systems.
Current edition approved May 1, 2019. Published June 2019. Originally
3.1.3 external leakage, n—leakagefromthemanifoldwhich
approved in 1996. Last previous edition approved in 2013 as F1685–00 (2013).
escapes to atmosphere.
DOI: 10.1520/F1685-00R19.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1.4 flow rate demand, n—theamountofflowdemandedat
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
any given time by the system downstream of the manifold.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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Available from American Society of Mechanical Engineers (ASME), ASME
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International Headquarters, Two Park Ave., New York, NY 10016-5990, http:// Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
www.asme.org. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1685 − 00 (2019)
FIG. 1 Manifold Configuration
FIG. 2 Manifold Configuration
3.1.5 flow rate demand range, n—the range over which the including the seats of the outlet stop valve and bypass throttle
flow demand can vary. valve. The outlet pressure rating is applicable from the outlet
side of the seats of the outlet stop valve to the manifold outlet
3.1.6 hydrostatic shell test pressures, n—thehydrostatictest
a
...

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