The purpose of this standard is to provide purchasers, manufacturers, and suppliers with the minimum requirements for wet-barrel fire hydrants for fire-protection service, including materials, design, inspection, testing, marking, and shipping requirements.<\/p>\n
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| 7<\/td>\n | Foreword I. Introduction. I.A. Background.\u2003Molecularly oriented polyvinyl chloride (PVCO) pressure pipe has been installed in Europe since the early 1970s and in North America since 1991. The longitudinal molecular structure of polyvinyl chloride (PVC) is reoriented to a circumfer <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | I.B. History.\u2003This is the fourth edition of ANSI\/AWWA C909. In 1994, the PVC Pipe and Fittings Committee appointed a subcommittee to develop a standard for PVCO pressure pipe. The first edition of ANSI\/AWWA C909 was approved by the AWWA Board of Directors I.C. Acceptance.\u2003In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | II. Special Issues.\u2003The material presented in this standard is addressed in the third edition of AWWA Manual M23, which was published in 2020. The material published here ensures that users of this standard will have continuous access to the most up-to-da II.A. Pipe Selection. II.B. Gasket Materials. <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | III. Use of This Standard.\u2003It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. Although this standard generally presents ad III.A. Purchaser Options and Alternatives.\u2003The following items should be provided by the purchaser: <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | III.B. Modification to Standard.\u2003Any modifications to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV. Major Revisions.\u2003The major revisions to this edition include the following: V. Comments.\u2003If you have any comments or questions about this standard, please contact AWWA Engineering and Technical Services at 303.794.7711; FAX at 303.795.7603; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at sta <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | AWWA Standard <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA C909-22 Molecularly Oriented Polyvinyl Chloride (PVCO) Pressure Pipe, 4 In. (100 mm) and Larger<\/b><\/p>\n |