Standard Specification for Coextruded Composite Drain, Waste, and Vent Pipe (DWV)
1.1 This specification covers coextruded composite drain, waste, and vent pipe (DWV). The pipe is produced in Schedule 40 IPS sizes by a coextrusion die system, in which the concentric layers are formed and combined before exiting the die.
1.1.1 Coextruded composite drain, waste, and vent pipe, DWV, by definition, is permitted to be produced with two or more layers. The outer layer shall be ABS. The middle layer is permitted to be thermally foamed PVC or solid PVC or a blend of rework material, as specified in the rework material section. The inner layer is permitted to be solid PVC or ABS, or a blend of rework material as specified in the rework material section.
1.1.2 The function of this specification is to provide standardization of product, technical data, and serve as a purchasing guide.
1.2 DWV is permitted to be produced utilizing a two layer or three layer coextrusion die.
1.3 Materials that do not meet the requirements of the material section are excluded.
1.4 Pipe produced to this specification is permitted to be joined using molded fittings meeting the requirements of Specification D 2661 or Specification F 628. The fitting patterns must comply with Specification D 3311.
1.5 Pipe produced to this specification is permitted to be perforated in accordance with any specified standard or by agreement between the purchaser and the supplier.
1.6 Pipe produced to this specification is permitted to be belled for joining by solvent cementing or belled for joining by an elastomeric seal (gasket), in accordance with any specified standard or by agreement between the purchaser and the supplier.
1.7 Recommendations for storage, joining, and installation are provided in Appendix X1, Appendix X2, and Appendix X3, respectively.
1.8 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
1.9 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this specification.
1.10 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.
Note 1—Specifications related to this specification are as follows: Specifications D 2661, D 2665, F 628, and F 891.
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