Resilient Seated Gate Valves

2026-11-03

2 . 1 SERVICE CONDITIONS / DESIGN CRITERIA Resilient seated gate valves shall conform to the requirements of AWWA Standard C509 and / pr C515 , latest revision , and specific requirements of these specifications and conditions . Although not addressed in the applicable AWWA standards , all 2 - inch threaded valves with T - head operating nut shall comply with the design parameters set forth in AWWA C509 and / or C515 . 2 . 1 . 1 AMERICAN IRON AND STEEL ( AIS ) REQUIREMENTS All iron and steel products in this specification must comply with American Iron and Steel ( AIS ) requirements . The requirements were established in the 2014 Consolidated Appropriations Act ( CAA ) under Section 436 ( Public Law 113 - 76 ), which was made permanent in 2014 by the Water Resources Reform and Development Act , amending the Clean Water Act under Section 608 for all Clean Water State Revolving Fund ( CWSRF ) loan recipients . The Water Infrastructure Finance and Innovation Act of 201 ( WIFIA Program ), administered by the U . S . Environmental Protection Agency ( EPA ), mirrors the Clean Water and Drinking Water State Revolving Fund programs ( refer to Statue § 33 U . S . C . 3914 ) as it relates to AIS requirements . 2 . 1 . 2 MANUFACTURER AIS CERTIFICATION LETTER : Products made primarily of iron or steel ( greater than 50 % iron or steel , measured by material cost only ) must be produced in the United States . The product manufacturer must certify that the products and / or materials provided by the manufacturer are in full compliance with the American Iron and Steel ( AIS ) requirements as mandated in the Environmental Protection Agency ’ s State Revolving Fund Programs . Central Alabama Water shall request and obtain AIS Certification Letters from the iron and steel manufacturers supplying products and / or materials to Central Alabama to be incorporated into projects . 2 . 2 DETAILS OF CONSTRUCTION All items furnished under this contract shall be manufactured or assembled by the manufacturer and shall carry his name or trademark permanently cast and readily visible on the body of the valve . All markings shall be cast integrally on the valve body with the size of valve , manufacturer ’ s name , year manufactured , and 250 to signify working pressure . The resilient seated gate valves are to have an iron body and bonnet , a non - rising stem , using the compression of the resilient material against the contour of the valve body for sealing . Valves shall have a clear , unobstructed waterway when fully opened and shall be at least as large as the inside diameter for which it is intended . All internal surfaces , including the internal cavity of the gate , shall be coated with epoxy to a minimum thickness of 8 mils . Said coating shall be non - toxic and impart no taste to water , and shall conform to AWWA C550 , latest revision . The outside of the valve is to be coated with the same epoxy such that all exposed external surfaces , including end connection bolt holes , body - tobonnet bolt holes , etc ., shall be coated .

Alabama

2026-03-27