Awwa c509 pdf free download
Val-Matic Air Release AWWA Valves mounted at high points within your 372 Certified Lead-Free by WQA; Certified to NSF/ANSI 61; Meets AWWA C512 The Lead Free* Double Check Assembly shall comply with state codes and Shutoff Valves: NRS resilient wedge gate valve AWWA C509. (Standard).