ASTM F1123-87(1998)
(Specification)Standard Specification for Non-Metallic Expansion Joints
Standard Specification for Non-Metallic Expansion Joints
SCOPE
1.1 This specification provides the minimum requirements for construction, materials, performance, and dimensional requirements of arch type non-metallic expansion joints.
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.
1.3 The following safety hazards caveat pertains only to the test method described in this specification. This standard does not purport to address all of the safety problems, 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.
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An American National Standard
Designation: F 1123 – 87 (Reapproved 1998)
Standard Specification for
Non-Metallic Expansion Joints
This standard is issued under the fixed designation F 1123; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
NOTE 1—This bead is molded into a groove in the metallic flange.
1. Scope
Retaining rings are not required with this design.
1.1 This specification provides the minimum requirements
3.1.2 integral rubber flange type—expansion joint having
for construction, materials, performance, and dimensional
the tube, fabric plies, and cover brought up from the joint body
requirements of arch-type non-metallic expansion joints.
to form a rubber flange.
1.2 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
NOTE 2—Additional plies or other reinforcement may be used in the
information only.
flange to meet service conditions. Retaining rings must be used with this
1.3 The following safety hazards caveat pertains only to the design.
test method described in this specification. This standard does
3.1.3 maximum allowable working pressure (MAWP)—
not purport to address all of the safety concerns, if any,
manufacturer’s recommended maximum continuous operating
associated with its use. It is the responsibility of the user of this
pressure (lb/in. (Pa)).
standard to establish appropriate safety and health practices
3.1.4 non-metallic flanged expansion joint—flexible con-
and determine the applicability of regulatory limitations prior
nector fabricated from natural or synthetic rubber and fabrics,
to use.
usually with metal reinforcement, to isolate vibration and noise
and provide stress relief in piping systems caused by thermal
2. Referenced Documents
changes and other system movements.
2.1 ASTM Standards:
A 395 Specification for Ferritic Ductile Iron Pressure- 4. Ordering Information
Retaining Castings for Use at Elevated Temperatures
4.1 Ordersforproductsunderthisspecificationshallinclude
D 1418 Practice for Rubber and Rubber Latices—
the following information:
Nomenclature
4.1.1 Inside diameter of connecting pipes (joint ID).
2.2 Federal Standard:
4.1.2 Face-to-face dimension that is the flange-to-flange
Code of Federal Regulations, Title 30, Chapter I, Mine
dimension into which the expansion joint is to be installed.
Safety and Health Administration
4.1.3 Maximum and minimum operating pressure in
2.3 ANSI Standards:
pounds-force per square inch gage (pascals).
B16.1 Cast Iron Pipe Flanges and Flanged Fittings
4.1.4 Maximum and minimum operating temperature in °F
B16.5 Steel Pipe Flanges and Flanged Fittings
(°C).
B16.24 Bronze Flanges and Flanged Fittings
4.1.5 Flange drilling in accordance with the appendix titled
“Common Flange Dimension/Drilling Chart’’ of the Technical
3. Terminology
Handbook on Rubber Expansion Joints and Flexible Pipe
3.1 Definitions:
Connectors (herein referred to as the Technical Handbook)or
3.1.1 floating metallic flange type—expansion joint having
in accordance with special customer requirements.
the tube, fabric plies, and cover brought up from the joint body
4.1.6 Fluid to be handled.
to form a bead.
4.1.7 This ASTM specification designation.
4.1.8 Movement data requirements (including shock or
This specification is under the jurisdiction of ASTM Committee F25 on Ships vibratory excursions if applicable).
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
4.1.9 Design certification burst test if required (see 9.1).
Machinery and Piping Systems.
4.1.10 Hydrostatic or special tests if required (see 9.2).
Current edition approved Dec. 31, 1987. Published February 1988.
Annual Book of ASTM Standards, Vol 01.02.
Annual Book of ASTM Standards, Vol 09.01.
Available from Superintendent of Documents, Government Printing Office,
Washington, DC 20402. The Technical Handbook on Rubber Expansion Joints and Flexible Pipe
Available from American Society of Mechanical Engineers (ASME), ASME Connections is available from Fluid Sealing Association, 2017 Walnut St., Phila-
International Headquarters, Three Park Ave., New York, NY 10016-5990. delphia, PA 19103.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1123 – 87 (1998)
4.1.11 Certification of expansion joint if required (see Sec- 5.8 Retaining Rings—Retaining rings for the integral flange
tion 12). type are installed behind the flanges and are drilled to match
theflangedrilling.Thesectionssuppliedforeachflangeshould
4.1.12 Certified detailed drawing of the expansion joint if
required (see 12.2). be split at the bolt holes to ensure a proper seal at all points
whentheboltsaretightened.Theedgenexttotherubberflange
shall be broken or bevelled to prevent cutting the rubber
5. Materials and Manufacture
flanges. Retaining rings must be a minimum thickness of ⁄8 in.
5.1 Expansion joints shall be fabricated with an elastomeric
(9.5 mm) and shall be made of steel or ductile iron. Carbon
tube reinforced with multiple plies of woven cloth or tire cord
steel shall be galvanized. Ductile iron shall be in accordance
covered with synthetic rubber.The inner tube shall be a natural
with Specification A 395A 395.
rubber,syntheticrubber,orblendofsyntheticrubberthatmeets
the requirements of this specification. The woven cloth or tire
6. Other Requirements
cord shall be nylon, polyester, fiberglass, or aramid. Cotton is
6.1 All expansion joints shall be designed for a minimum
not acceptable. The reinforcing fabric shall be impregnated
burst pressure of four times the maximum allowable working
with a compatible friction stock. Additional reinforcement to
pressure. The design shall be based on analytical or experi-
the fabric may be provided in the body of the expansion joint
mental test of expansion joints of similar construction, class,
and may be solid metal rings or wire imbedded in the synthetic
type, and size. The design shall be certified by tests if ordered
rubber. Tensile properties of the wire, if used, shall be as given
(see 4.1.9).
in 5.2. Body rings, if used, must be welded before being
6.2 Performance Requirements—Single arch expansion
installed in the expansion joint body. Welds must be 100 %
joint movement shall not exceed the limits of the Technical
penetration.
Handbook table referred to in 5.6 unless the manufacturer
5.1.1 The list of elastomers used in expansion joints and
certifies that a proposed design can exceed the listed minimum
rubber pipe in accordance with the Technical Handbook lists
movementcapabilitytomeetaspecialrequirementgreaterthan
acceptable natural rubber and synthetic elastomers for con-
the minimum listed. Multiple arch-joint movement shall be of
struction of non-metallic expansion joints.
the manufacturer’s certified design.
5.2 Reinforcing wire shall have properties that allow the
6.3 Pressure Rating—Expansion joints shall be limited to
expansion joints to meet the requirements of this specification.
the pressures listed in the table “Pressure Characteristics of
5.3 All expansion joints shall be manufactured with a cover
Rubber Expansion Joints’’ of the Technical Handbook .
of Hypalon or Neoprene (Chloroprene),
...
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