150F and 300F Series Flanged Ball Valves offer a unique design that is ideal for process and petrochemical applications. The 150F-300F Series Ball Valves' floating ball and protected seat design, O-ring backed seat, and fire safe design (to API 607-5) make this flanged ball valve ideal for use in Chemical process equipment, Refineries, Petrochemical, Pipeline, Process control, and Water and waste applications. The 150F-300F Flanged Ball Valves also feature a spiral wound body gasket with secondary metal to metal seal, open and close socking device for position safety lockout, and O-ring reinforced stem packing.