This standard covers gray-iron, ductile-iron, and cast-steel flanged-end, low-leakage, shaft- or trunnion-mounted, full-port, and double- and single-seated ball valves for pressures up to 150 psi (1,050 kPa) in sizes 6 in. through 60 in. diameter and pressures up to 300 psi (2,100 kPa) in sizes from 6 in. through 48 in. diameter.