ASTM F721 - 81(2014)
Standard Specification for Gage Piping Assemblies
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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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
ANSI Standards
B16.11 Forged Steel Fittings, Socket Weld, and Threaded B16.15 Cast Bronze Threaded FittingsFederal Specifications
QQ-S-637 Steel Bar, Carbon, Cold Finished (Standard Quality, Free Machining) QQ-S-763 Steel Bars, Wire, Shapes, and Forgings, Corrosion-ResistingICS Code
ICS Number Code 17.100 (Measurement of force, weight and pressure)
UNSPSC Code
UNSPSC Code 40170000(Pipe piping and pipe fittings)
Referencing This Standard
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DOI: 10.1520/F0721-81R14
Citation Format
ASTM F721-81(2014), Standard Specification for Gage Piping Assemblies, ASTM International, West Conshohocken, PA, 2014, www.astm.org
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