Val-Matic’s Swing-Flex and Surgebuster check valves have received certification to NSF/ANSI 61 for drinking water system components. WQA provided certification of the Val-Matic product. Both are available in sizes 2 in. to 48 in. and are designed for many years of maintenance-free service. The short, 35-degree stroke provides fast closure to minimize slamming and slam-related surges. They are WQA certified lead free and are designed and built in accordance with AWWA C508.