The High Performance Butterfly Valves Series offers Class VI shut-off and an advanced seat design, which provides a bi-directional interference and pressure-assisted seal. These valves are available in sizes 2″ through 12″ with a pressure rating up to 285 PSI for 150 class and 740 psi for 300 class valves. Body is available in carbon or stainless steel with Wafer or Lugged flanged end connections. The HP Series disc is engineered for a quick release from the seat, which reduces torque and seat wear. Machined position stops on the body locate the disc in the seat to achieve maximum seat and seal life.