ASTM-F2934 Standard Specification for Circular Metallic Bellows Type Expansion Joint for HVAC Piping Applications

ASTM-F2934 - 2012 R23 EDITION - CURRENT
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This specification establishes the minimum requirements for the mechanical design, manufacture, inspection and testing of circular metallic bellows-type expansion joints used to absorb the dimensional changes resulting from piping thermal expansion or contraction, as well as the movements of terminal equipment and supporting structures. This specification indicates the ordering information for each expansion joint, such as the dimensional limitations, internal liner, end fittings, and flow medium. It also identifies the quality workmanship requirements, materials needed for manufacture, and other possible requirements.

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Scope

1.1 This specification establishes the minimum requirements for the mechanical design, manufacture, inspection and testing of circular metallic bellows-type expansion joints used to absorb the dimensional changes resulting from piping thermal expansion or contraction, as well as the movements of terminal equipment and supporting structures.

1.2 Additional or better features, over and above the minimum requirements set by this specification, are not prohibited by this specification.

1.3 The layout of many piping systems provides inherent flexibility through natural changes in direction so that any displacements produce primarily bending or torsional strains, within acceptable limits. Where the system lacks this inherent flexibility the designer should then consider adding flexibility through the use of metallic bellows-type expansion joints.

1.4 The values stated in inch-pound units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

expansion joint; HVAC systems; metallic bellows-type expansion joints; piping systems; piping thermal contraction; piping thermal expansion; ICS Number Code 91.140.30 (Ventilation and air-conditioning systems)

To find similar documents by ASTM Volume:

01.07 (Ships and Marine Technology)

01.08 (Fasteners; Rolling Element Bearings)

To find similar documents by classification:

91.140.30 (Ventilation and air-conditioning systems Including ventilation ducts Ventilators and air-conditioners, see 23.120)

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Document Number

ASTM-F2934-12R23

Revision Level

2012 R23 EDITION

Status

Current

Modification Type

New

Publication Date

June 6, 2023

Document Type

Specification

Page Count

5 pages

Committee Number

F25.11