ASTM F1123-87(2019)

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: F1123 −87 (Reapproved 2019) An American National Standard
Standard Specification for
Non-Metallic Expansion Joints
This standard is issued under the fixed designation F1123; 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 2.2 Federal Standard:
Code of Federal Regulations, Title 30, Chapter I, Mine
1.1 This specification provides the minimum requirements
Safety and Health Administration
for construction, materials, performance, and dimensional
requirements of arch-type non-metallic expansion joints. 2.3 ASME Standards:
B16.1 Gray Iron Pipe Flanges and Flanged Fittings: Classes
1.2 The values stated in inch-pound units are to be regarded
25, 125, and 250
as standard. The values given in parentheses are mathematical
B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through
conversions to SI units that are provided for information only
NPS 24 Metric/Inch Standard
and are not considered standard.
B16.24 Cast Copper Alloy Pipe Flanges, Flanged Fittings,
1.3 The following safety hazards caveat pertains only to the
and Valves: Classes 150, 300, 600, 900, 1500, and 2500
test method described in this specification. This standard does
not purport to address all of the safety concerns, if any,
3. Terminology
associated with its use. It is the responsibility of the user of this
3.1 Definitions:
standard to establish appropriate safety, health, and environ-
3.1.1 floating metallic flange type, n—expansion joint hav-
mental practices and determine the applicability of regulatory
ing the tube, fabric plies, and cover brought up from the joint
limitations prior to use.
body to form a bead.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1.1.1 Discussion—This bead is molded into a groove in
ization established in the Decision on Principles for the
the metallic flange. Retaining rings are not required with this
Development of International Standards, Guides and Recom-
design.
mendations issued by the World Trade Organization Technical
3.1.2 integral rubber flange type, n—expansion joint having
Barriers to Trade (TBT) Committee.
the tube, fabric plies, and cover brought up from the joint body
to form a rubber flange.
2. Referenced Documents
3.1.2.1 Discussion—Additional plies or other reinforcement
2.1 ASTM Standards:
may be used in the flange to meet service conditions. Retaining
A395/A395M Specification for Ferritic Ductile Iron
rings must be used with this design.
Pressure-Retaining Castings for Use at ElevatedTempera-
3.1.3 maximum allowable working pressure (MAWP),
tures
n—manufacturer’s recommended maximum continuous oper-
D1418 Practice for Rubber and Rubber Latices—
ating pressure (lb/in. (Pa)).
Nomenclature
3.1.4 non-metallic flanged expansion joint, n—flexible con-
nector fabricated from natural or synthetic rubber and fabrics,
usually with metal reinforcement, to isolate vibration and noise
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 Dec. 1, 2019. Published January 2020. Originally
approved in 1987. Last previous edition approved in 2015 as F1123 – 87 (2015). Available from U.S. Government Printing Office, Superintendent of
DOI: 10.1520/F1123-87R19. Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.access.gpo.gov.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1123 − 87 (2019)
and provide stress relief in piping systems caused by thermal mer) plus normal additives to provide for curing and a
changes and other system movements. durometer between 50 and 75 on the ShoreAScale. Neoprene
and Hypalon are selected as the best fire-retardant elastomer of
4. Ordering Information
the common types used for expansion joints. This material
shall be certified flame resistant as outlined in 10.3.
4.1 Ordersforproductsunderthisspecificationshallinclude
the following information:
5.4 Integral Flanges—Thetube,fabricplies,andcovershall
4.1.1 Inside diameter of connecting pipes (joint ID).
be brought up from the joint body to form an intregal flange.
4.1.2 Face-to-face dimension that is the flange-to-flange
This rubber flange shall extend beyond the bolt holes of the
dimension into which the expansion joint is to be installed.
retaining ring.
4.1.3 Maximum and minimum operating pressure in
5.5 Floating Metallic Flanges—The metal flanges shall
pounds-force per square inch gage (pascals).
have a groove to accept the molded bead in the body at each
4.1.4 Maximum and minimum operating temperature in °F
end of the expansion joint bellows.
(°C).
4.1.5 Flange drilling in accordance with the appendix titled 5.6 Arches—Arches may be either straight sided or long
radius depending on the manufacturer’s standard construction.
“Common Flange Dimension/Drilling Chart” of the Technical
Handbook on Rubber Expansion Joints and Flexible Pipe The arch size and shape determine the movement capability of
the joint. Minimum movement capability of single arch joints
Connectors (herein referred to as the Technical Handbook)or
in accordance with special customer requirements. shall be in accordance with the Technical Handbook table
titled “Expansion Joint Movement Force/Spring Rate Capabil-
4.1.6 Fluid to be handled.
4.1.7 This ASTM specification designation. ity.” Movement capability information for multiple arch de-
signs shall be available from the manufacturer.
4.1.8 Movement data requirements (including shock or
vibratory excursions if applicable).
5.7 Metallic Flanges:
4.1.9 Design certification burst test if required (see 9.1).
5.7.1 Flanges shall be drilled in accordance with the Tech-
4.1.10 Hydrostatic or special tests if required (see 9.2). 5
nical Handbook appendixtitled“CommonFlangeDimension/
4.1.11 Certification of expansion joint if required (see Sec-
Drilling Chart” or in accordance with the customer order as
tion 12).
required, to match the mating flanges.
4.1.12 Certified detailed drawing of the expansion joint if
5.7.2 Metallic flanges shall meet the material requirements
required (see 12.2).
and pressure-temperature ratings in accordance with ASME
B16.1, B16.5, or B16.24.
5. Materials and Manufacture
5.8 Retaining Rings—Retaining rings for the integral flange
5.1 Expansion joints shall be fabricated with an elastomeric
type are installed behind the flanges and are drilled to match
tube reinforced with multiple plies of woven cloth or tire cord
theflangedrilling.Thesectionssuppliedforeachflangeshould
covered with synthetic rubber.The inner tube shall be a natural
be split at the bolt holes to ensure a proper seal at all points
rubber,syntheticrubber,orblendofsyntheticrubberthatmeets
whentheboltsaretightened.Theedgenexttotherubberflange
the requirements of this specification. The woven cloth or tire
shall be broken or bevelled to prevent cutting the rubber
cord shall be nylon, polyester, fiberglass, or aramid. Cotton is
flanges. Retaining rings must be a minimum thickness of ⁄8 in.
not acceptable. The reinforcing fabric shall be impregnated
(9.5 mm) and shall be made of steel or ductile iron. Carbon
with a compatible friction sto
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