The purpose of this standard is to provide the minimum requirements for cast-iron slide gates, including materials, general design, manufacture, testing, inspection, and shipment. The slide gates referenced in this standard are vertically-mounted, cast-iron slide gates with full aperture closing, designed for either seating head, or unseating head, or both, in ordinary water-supply and wastewater service. The cast-iron slide gates have machined metal faces and machined adjustable wedging devices.<\/p>\n
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| 7<\/td>\n | Foreword I.\tIntroduction. I.A.\tBackground.\u2003A cast-iron slide gate is a cast-iron or cast-ductile-iron, vertically sliding gate with metal (usually bronze or stainless-steel) seating faces and adjustable metal (usually bronze or stainless-steel) wedges. The slide gate consists of a <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | I.B.\tHistory.\u2003The original AWWA standard for slide gates (then referred to as sluice gates) was approved as tentative on June 26, 1941 and described cast-iron gates. The tentative standard was revised and approved on June 4, 1967, as AWWA C501. Subsequent I.C.\tAcceptance.\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.\tSpecial Issues. II.A.\tBackground.\u2003During the revision of this standard the issue of critical buckling of the gate stem was discussed. This resulted in the design load stipulated in 4.4.11.2 changing. The intent of this was to align C560 with the other slide gate standard II.B.\tChlorine and Chloramine Degradation of Elastomers.\u2003The selection of materials is critical for water service and distribution piping in locations where there is a possibility that elastomers will be in contact with chlorine or chloramines. Documented <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | III.\tUse 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. III.A.\tPurchaser Options and Alternatives.\u2003The following items shall be provided by the purchaser: <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | V.\tComments.\u2003If you have any comments or questions about this standard, please call 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 standa <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | AWWA Standard SECTION 1:\u2002GENERAL Sec.\u20021.1\tScope Sec.\u20021.2\tPurpose Sec.\u20021.3\tApplication <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | SECTION 2:\u2002REFERENCES <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | SECTION 3:\u2002DEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | SECTION 4:\u2002REQUIREMENTS Sec.\u20024.1\tData to Be Provided by the Supplier Sec.\u20024.2\tData to Be Provided by the Manufacturer Sec.\u20024.3\tMaterials <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Sec.\u20024.4\tGeneral Design <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Sec.\u20024.5\tManufacture <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Sec.\u20024.6\tInstallation <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | SECTION 5:\u2002VERIFICATION Sec.\u20025.1\tInspection Sec.\u20025.2\tTest Procedures <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Sec.\u20025.3\tBasis for Rejection <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Sec.\u20026.1\tMarking Sec.\u20026.2\tShipment Sec.\u20026.3\tAffidavit of Compliance <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | APPENDIX A Force Required to Actuate Cast-Iron Slide Gate <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA C560-21 Cast-Iron Slide Gates<\/b><\/p>\n |