Robust Knife Gate Valve with Flexible Elastomer Seat, Tested for Reliability and Long-Term Durability The Bray Series 740 Bidirectional Knife Gate Valve showcases advanced industrial valve technology, featuring a robust one-piece, cast body design for optimal performance across diverse applications. Its replaceable soft seat ensures resilience durability and adaptability for automated processes, facilitating precise on/off operations.The one-piece cast body seamlessly integrates with a flexible wire-reinforced elastomer seat, delivering bidirectional zero leakage shutoff in various industrial settings.