Val-Matic’s Swing-Flex® Check Valve is the valve of choice based on its simple maintenance-free design, low headloss and non-slam characteristics. The valve’s smooth, unrestricted 100 percent full flow design makes it an excellent choice for sludge and slurries. The Swing-Flex® Check Valve’s non-slam performance is achieved by placing the valve seat on a 45-degree angle to minimize disc travel and utilizing the Memory-Flex™ Disc return feature.