AWWA C550-13 Protective Interior Coatings for Valves and Hydrants (PDF)
SKU: STC_0077515-PDF
This standard describes protective interior coatings for valves used for water supply, wastewater collection and treatment, and reclaimed water service having a pH range from 4 to 9; and for hydrants used for water supply service. The standard describes the material, application, and performance requirements for these interior coatings. The coating shall not contain coal tar. These coatings are applied for protection of ferrous surfaces of valves and hydrants.
Description
Major revisions to the standard in this edition include: the scope of the standard has been expanded to include coatings for valves used for wastewater and reclaimed water (Sec. 1.1), and definitions for those terms have been added (Sec. 3.12 and 3.13); a definition for "holiday" has been added (Sec. 3.6); the sections on inspection (former Sec. 5.1) and on shipping and handling (former Sec. 6.2) have been moved to an appendix (Sec. A.2 and Sec. A.1 respectively); immersion testing requirements have been clarified (Sec. 5.1.1.2 and Table 1); minimum average dry film thickness requirement has been added (Sec. 5.1.2.2); holiday testing details have been clarified (Sec. 5.1.3), and additional guidance on holiday testing has been added to the appendix (Sec. A.3); and coating repair requirements have been added (Sec. 5.2).