Standard/Approvals: ASTM A197 (Casting)|ASME B16.3 (Dimensions)|ASME B1.20.1 (Threads)|ASME B16.14 (Plug)|ASTM A153 (Hot-Dipped Galanizing)|cULus Listed|FM Approved|Manufacturing Facility is ISO 9001:2008 and ISO 14001|NSF/ANSI 61-4 and CA AB1953 (Lead Free)