ASTM C425-04

Standard Specification for Compression Joints for Vitrified Clay Pipe and Fittings

ABSTRACT
This specification covers vitrified clay pipe and fitting materials and pipe joint assemblies test requirements for compression joints. Sealing elements shall be compressed and bounded between bearing surfaces to assure watertight integrity. Materials and manufacture, such as rubber ring-sealing elements, plastic components, and metallic components, shall conform to the chemical resistance, tensile strength, hardness, compression set, water absorption, ozone resistance, and accelerated oven aging requirements of the specification. Minimum of two assembled joints shall be tested for each diameter of pipe furnished. Joints shall be subjected to water pressure testing and shall not leak even when deflected, displaced or subjected to shear under the limits indicated in the specification.
SCOPE
1.1 This specification covers materials and test requirements for compression joints for vitrified clay pipe and fittings. See Specification C 700 for pipe specifications. The test requirements are applicable to pipe joint assemblies prior to field installation of pipe.
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. Note 1Install pipe in accordance with Practice C 12.
The following precautionary caveat pertains only to the Test Requirements portion, Section , of this standard. 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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2004
• ICS: 23.040.60 - Flanges, couplings and joints
• Technical Committee: C04 - Vitrified Clay Pipe
• Drafting Committee: C04.20 - Methods of Test and Specifications

Relations

• Replaces: ASTM C425-02 - Standard Specification for Compression Joints for Vitrified Clay Pipe and Fittings
• Effective Date: 01-Apr-2004
• Referred By: ASTM C700-18(2022) - Standard Specification for Vitrified Clay Pipe, Extra Strength, Standard Strength, and Perforated
• Effective Date: 01-Apr-2004
• Referred By: ASTM C12-22a - Standard Practice for Installing Vitrified Clay Pipe Lines
• Effective Date: 01-Apr-2004
• Referred By: ASTM C301-18(2022) - Standard Test Methods for Vitrified Clay Pipe
• Effective Date: 01-Apr-2004

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: C 425 – 04
Standard Specification for
1
Compression Joints for Vitrified Clay Pipe and Fittings
This standard is issued under the fixed designation C 425; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D 412 Test Methods for Vulcanized Rubber and Thermo-
plastic Elastomers—Tension
1.1 Thisspecificationcoversmaterialsandtestrequirements
D 471 Test Method for Rubber Property—Effect of Liquids
for compression joints for vitrified clay pipe and fittings. See
D 518 Test Method for Rubber Deterioration—Surface
Specification C 700 for pipe specifications. The test require-
Cracking
ments are applicable to pipe joint assemblies prior to field
D 543 Practices for Evaluating the Resistance of Plastics to
installation of pipe.
Chemical Reagents
1.2 The values stated in inch-pound units are to be regarded
D 573 Test Method for Rubber—Deterioration in an Air
as the standard. The values given in parentheses are for
Oven
information only.
D 883 Terminology Relating to Plastics
NOTE 1—Install pipe in accordance with Practice C 12.
D 1149 Test Method for Rubber Deterioration—Surface
1.3 The following precautionary caveat pertains only to the Ozone Cracking in a Chamber
Test Requirements portion, Section 7, of this standard. This D 1566 Terminology Relating to Rubber
standard does not purport to address all of the safety concerns, D 2240 Test Method for Rubber Property—Durometer
if any, associated with its use. It is the responsibility of the user Hardness
of this standard to establish appropriate safety and health
3. Terminology
practices and determine the applicability of regulatory limita-
tions prior to use. 3.1 Definitions—Terms relating to plastics and rubber shall
beasdefinedinTerminologiesD 883andD 1566,respectively.
2. Referenced Documents
3.2 Terminology C 896 can be used for clarification of
2
2.1 ASTM Standards: terminology in this specification.
A 167 Specification for Stainless and Heat-Resisting
4. Principles of Joint Design
Chromium-Nickel Steel Plate, Sheet, and Strip
A 240/A 240M SpecificationforHeat-ResistingChromium 4.1 Sealing elements shall be compressed between bearing
surfaces to assure watertight integrity as required in Section 7.
and Chromium-Nickel Stainless Steel Plate, Sheet, and
Strip for Pressure Vessels 4.2 Sealing elements shall either be bonded to bearing
surfaces or be independent elements.
C 12 Practice for Installing Vitrified Clay Pipe Lines
C 700 Specification for Vitrified Clay Pipe, Extra Strength,
5. Materials and Manufacture
Standard Strength, and Perforated
5.1 Rubber ring-sealing elements shall conform to the
C 896 Terminology Relating to Clay Products
requirements of Table 1.
D 395 Test Methods for Rubber Property—Compression
5.2 Rubber for other than ring-sealing elements shall con-
Set
form to the requirements of Table 2.
5.3 Plastic components shall conform to the requirements of
1
This specification is under the jurisdiction of ASTM Committee C04 on
Table 3.
Vitrified Clay Pipe and is the direct responsibility of Subcommittee C04.20 on
5.4 Metallic components shall be of corrosion-resistant
Methods of Test and Specifications.
Current edition approved April 1, 2004. Published May 2004. Originally
metal conforming to Specifications A 167 and A 240/A 240M.
approved in 1958. Last previous edition approved in 2002 as C 425–02.
5.5 If any of the test specimens fail to meet the chemical
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
resistance requirements, the manufacturer will be allowed a
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
retest of two additional specimens, representative of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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C425–04
TABLE 1 Tests for Rubber—Ring-Sealing Elements
NOTE—Except for the water absorption test (Test Method D 471), the tests shall be run on specimens cut from rubber test slabs representative of the
finished product.
Test Test Requirement ASTM Standard
Chemical resistance: D 543 [48 h at 23 6 2°C]
1N sulfuric acid no weight loss
1N hydrochloric acid no weight loss
Tensile strength 1500 psi (10.4 MPa) min; 500 % min elongation at break D 412
Hardness Shore A durometer 35 min to 50 max D 2240
Compression set 16 % max of original deflection D 395, Method B [22 h at 70 6 2°C ]
Wa
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