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ASTM F721-18

(Specification)

Standard Specification for Gage Piping Assemblies

Standard Specification for Gage Piping Assemblies

ABSTRACT
This specification covers details of gage piping assemblies for pressure gages with optional provisions for additional gages, pressure switches, transmitters, and so forth, for use with steam, steam drains, feed water, condensate, fresh water, salt water, compressed air, fuel oil, and lubricating oil systems. A siphon shall be used as shown in all gage applications for steam systems to maintain a protective water seal between the gage and the steam supply.
SCOPE
1.1 This specification covers details of gage piping assemblies for pressure gages with optional provisions for additional gages, pressure switches, transmitters, and so forth, for use with steam, steam drains, feed water, condensate, fresh water, salt water, compressed air, fuel oil, and lubricating oil systems.  
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.

General Information

Status
Historical
Publication Date
30-Apr-2018
ICS
17.100 - Measurement of force, weight and pressure
Technical Committee
F25 - Ships and Marine Technology
Drafting Committee
F25.11 - Machinery and Piping Systems
Current Stage
Ref Project

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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F721 −18 An American National Standard
Standard Specification for
1
Gage Piping Assemblies
ThisstandardisissuedunderthefixeddesignationF721;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope B16/B16M Specification for Free-Cutting Brass Rod, Bar
and Shapes for Use in Screw Machines
1.1 This specification covers details of gage piping assem-
B61 Specification for Steam or Valve Bronze Castings
blies for pressure gages with optional provisions for additional
B62 Specification for Composition Bronze or Ounce Metal
gages, pressure switches, transmitters, and so forth, for use
Castings
with steam, steam drains, feed water, condensate, fresh water,
B75 Specification for Seamless Copper Tube
salt water, compressed air, fuel oil, and lubricating oil systems.
B124/B124M Specification for Copper and Copper Alloy
1.2 The values stated in inch-pound units are to be regarded
Forging Rod, Bar, and Shapes
as standard. The values given in parentheses are mathematical
B453/B453M Specification for Copper-Zinc-Lead Alloy
conversions to SI units that are provided for information only
(Leaded-Brass) Rod, Bar, and Shapes
and are not considered standard.
B466/B466M Specification for Seamless Copper-Nickel
1.3 This international standard was developed in accor- Pipe and Tube
3
dance with internationally recognized principles on standard-
2.2 ANSI Standards:
ization established in the Decision on Principles for the
B16.11 Forged Steel Fittings, Socket Weld, and Threaded
Development of International Standards, Guides and Recom-
B16.15 Cast Bronze Threaded Fittings
mendations issued by the World Trade Organization Technical
4
2.3 SAE International:
Barriers to Trade (TBT) Committee.
AMS-QQ-S-763 Steel, Corrosion Resistant, Bars, Wire,
Shapes, and Forgings
2. Referenced Documents
2
2.1 ASTM Standards:
3. List of Assemblies
A105/A105M Specification for Carbon Steel Forgings for
3.1 This specification incorporates 13 gage piping assem-
Piping Applications
blies as described in Table 1.
A106/A106M Specification for Seamless Carbon Steel Pipe
for High-Temperature Service
4. General Requirements and Guidelines
A108 Specification for Steel Bar, Carbon and Alloy, Cold-
Finished
4.1 Fig. 1 shows a typical piping assembly for bottom-
A182/A182M Specification for Forged or Rolled Alloy and
connected gages and Fig. 2 a typical piping assembly for
Stainless Steel Pipe Flanges, Forged Fittings, and Valves
back-connected gages.
and Parts for High-Temperature Service
4.2 Asiphon shall be used as shown in all gage applications
A276 Specification for Stainless Steel Bars and Shapes
for steam systems to maintain a protective water seal between
A335/A335M Specification for Seamless Ferritic Alloy-
the gage and the steam supply.
Steel Pipe for High-Temperature Service
4.3 Each assembly includes a test connection beyond the
A576 Specification for Steel Bars, Carbon, Hot-Wrought,
1
gage valve which consists of a tee with a ⁄4-in. NPT threaded
Special Quality
plug in the branch. The plug is removable for the purpose of
installing a test gage for calibration. As an alternative, a gage
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships
valve that incorporates a built-in test connection integral with
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
the valve may be substituted for the gage valve and test tee.
Current edition approved May 1, 2018. Published May 2018. Originally
approved in 1981. Last previous edition approved in 2014 as F721 – 81 (2014).
DOI: 10.1520/F0721-18.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 4th Floor, New York, NY 10036.
4
Standards volume information, refer to the standard’s Document Summary page on Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
the ASTM website. PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F721−18
A,B
TABLE 1 Gage Piping Assemblies
Assembly Maximum Pressure, Maximum Temperature,
Service
No. psi (kPa) °F (°C)
1 Superheated steam 1125 (7757) 960 (516)
2 High-pressure desuperheated steam and high-pressure extractions 1100 (7584) 580 (304)
3 Low-pressure extractions, gland seal, auxili
...

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: F721 − 81 (Reapproved 2014) F721 − 18 An American National Standard
Standard Specification for
1
Gage Piping Assemblies
This standard is issued under the fixed designation F721; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This specification covers details of gage piping assemblies for pressure gages with optional provisions for additional gages,
pressure switches, transmitters, and so forth, for use with steam, steam drains, feed water, condensate, fresh water, salt water,
compressed air, fuel oil, and lubricating oil systems.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A105/A105M Specification for Carbon Steel Forgings for Piping Applications
A106/A106M Specification for Seamless Carbon Steel Pipe for High-Temperature Service
A108 Specification for Steel Bar, Carbon and Alloy, Cold-Finished
A182/A182M Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts
for High-Temperature Service
A276 Specification for Stainless Steel Bars and Shapes
A335/A335M Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
A576 Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality
B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines
B61 Specification for Steam or Valve Bronze Castings
B62 Specification for Composition Bronze or Ounce Metal Castings
B75 Specification for Seamless Copper Tube
B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes
B453/B453M Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Rod, Bar, and Shapes
B466/B466M Specification for Seamless Copper-Nickel Pipe and Tube
3
2.2 ANSI Standards:
B16.11 Forged Steel Fittings, Socket Weld, and Threaded
B16.15 Cast Bronze Threaded Fittings
4
2.3 Federal Specifications:SAE International:
QQ-S-637 Steel Bar, Carbon, Cold Finished (Standard Quality, Free Machining)
QQ-S-763AMS-QQ-S-763 Steel Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings, Corrosion-Resisting Forgings
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved Aug. 1, 2014May 1, 2018. Published September 2014May 2018. Originally approved in 1981. Last previous edition approved in 20082014 as
F721 – 81 (2008).(2014). DOI: 10.1520/F0721-81R14.10.1520/F0721-18.
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.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
4
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.SAE International (SAE),
400 Commonwealth Dr., Warrendale, PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F721 − 18
3. List of Assemblies
3.1 This specification incorporates 13 gage piping assemblies as described in Table 1.
4. General Requirements and Guidelines
4.1 Fig. 1 shows a typical piping assembly for bottom-connected gages and Fig. 2 a typical piping assembly for back-connected
gages.
4.2 A siphon shall be used as shown in all gage applications for steam systems to maintain a protective water seal between the
gage and the steam supply
...

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Note 5: Ref (2) concluded that dusts with KSt values below 45 bar m/s when measured in a 20-L chamber with a 10 000-J ignitor, may not be explosible when tested in a 1-m3 chamber with a 10 000-J ignitor. Ref (2) and unpublished testing has also shown that in some cases the KSt values measured in the 20-L chamber can be lower than those measured in the 1-m3 chamber. Refs (1) and (3) found that for some dusts, it was necessary to use lower ignition energy in the 20-L chamber in order to match MEC or MIC test data in a 1-m3 chamber. If a dust has measurable (nonzero) Pmax and KSt values with a 5000 or 10 000-J ignitor when tested in a 20-L chamber but no measurable Pmax and ...
SCOPE
1.1 Purpose. The purpose of this test method is to provide standard test methods for characterizing the “explosibility” of dust clouds in two ways, first by determining if a dust is “explosible,” meaning a cloud of dust dispersed in air is capable of propagating a deflagration, which could cause a flash fire or explosion; or, if explosible, determining the degree of “explosibility,” meaning the potential explosion hazard of a dust cloud as characterized by the dust explosibility parameters, maximum explosion pressure, Pmax; maximum rate of pressure rise, (dP/dt)max; and explosibility index, KSt.  
1.2 Limitations. Results obtained by the application of the methods of this standard pertain only to certain combustion characteristics of dispersed dust clouds. No inference should be drawn from such results relating to the combustion characteristics of dusts in other forms or conditions (for example, ignition temperature or spark ignition energy of dust clouds, ignition properties of dust layers on hot surfaces, ignition of bulk dust in heated environments, etc.)  
1.3 Use. It is intended that results obtained by application of this test be used as elements of a dust hazard analysis (DHA) that takes into account other pertinent risk factors; and in the specification of explosion prevention systems (see, for example NFPA 68, NFPA 69, and NFPA 652) when used in conjunction with approved or recognized design methods by those skilled in the art.
Note 1: Historically, the evaluation of the deflagration parameters of maximum pressure and maximum rate of pressure rise has been performed using a 1.2-L Hartmann Apparatus. Test Method E789, which describes this method, has been withdrawn. The use of data obtained from the test method in the design of explosion protection systems is not recommended.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1....

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ASTM
ASTM F2569-11(2019)(Test Method)
Standard Test Method for Evaluating the Force Reduction Properties of Surfaces for Athletic Use

SIGNIFICANCE AND USE
5.1 The force reduction property is just one of the important properties of a surface used for athletic activity. It may be an indicator of the performance, safety, comfort, or suitability of the surface.  
5.2 Manufacturers of athletic surfaces may use this test method to evaluate the effects of design changes on the impact forces generated on the surface.  
5.3 Facility owners may use this standard to evaluate the performance of existing sport/athletic surfaces. Results may be useful during the selection process for a replacement surface, or for an additional athletic surface being added to the facility.  
5.4 Facility owners may also use this test method to verify that newly installed surfaces perform at or near the levels included in project specifications.
SCOPE
1.1 This test method covers the quantitative measurement and normalization of impact forces generated through a mechanical impact test on an athletic surface. The impact forces simulated in this test method are intended to represent those produced by lower extremities of an athlete during landing events on sport or athletic surfaces.  
1.2 This test method may be applied to any surface where athletic activity may be conducted.  
1.3 The test methods described are applicable in both laboratory and field settings.  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.5 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.  
1.6 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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ASTM
ASTM E74-18e1(Practice)
Standard Practices for Calibration and Verification for Force-Measuring Instruments

SIGNIFICANCE AND USE
4.1 Testing machines that apply and indicate force are in general use in many industries. Practices E4 has been written to provide a practice for the force verification of these machines. A necessary element in Practices E4 is the use of force-measuring instruments whose force characteristics are known to be traceable to the SI. Practices E74 describes how these force-measuring instruments are to be calibrated. The procedures are useful to users of testing machines, manufacturers and providers of force-measuring instruments, calibration laboratories that provide the calibration of the instruments and the documents of traceability, service organizations that use the force-measuring instruments to verify testing machines, and testing laboratories performing general structural test measurements.
SCOPE
1.1 The purpose of these practices is to specify procedures for the calibration of force-measuring instruments. Procedures are included for the following types of instruments:  
1.1.1 Elastic force-measuring instruments, and  
1.1.2 Force-multiplying systems, such as balances and small platform scales.  
Note 1: Verification by deadweight loading is also an acceptable method of verifying the force indication of a testing machine. Tolerances for weights for this purpose are given in Practices E4; methods for calibration of the weights are given in NIST Technical Note 577(1)2, Methods of Calibrating Weights for Piston Gages.  
1.2 The values stated in SI units are to be regarded as the standard. Other metric and inch-pound values are regarded as equivalent when required.  
1.3 These practices are intended for the calibration of static force measuring instruments. It is not applicable for dynamic or high speed force calibrations, nor can the results of calibrations performed in accordance with these practices be assumed valid for dynamic or high speed force measurements.  
1.4 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.  
1.5 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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