Two-Piece Ball Valve, Full Port, 600 PSIG WOG/150 PSIG SWP, Threaded Ends, Conforms to. MSS SP-110, ASME A112.4.14, SA / UL / FM Listed for sizes 1/4" - 2" only, Available Sizes (1/2" - 3"). Materials: Body: Forged Brass ASTM B283, Ball: Chrome Plated Brass ASTM B584, Stem: Brass ASTM B16.