ASC's ABZ™ 101/102 series of general purpose, resilient-seated BFVs feature rugged bodies that are machined to high tolerances that ensure interchangeability of parts and actuators. Every stage of detailed manufacturing such as machine- and hand-buffing of individual discs is designed to ensure tight shutoffs, maximum seat life and valve performance that stands up to harsh working conditions. Our 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).