ABZ™ Series 396/397 features general purpose resilient-seated BFVs that are especially suitable for dead-end service. With one-piece bodies in wafer or full-lug styles, they are available in multiple configurations and corrosion-resistant materials that increase working life and simplify field maintenance. ABZ™ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).