600 Series brass ball valves represent a full range of economical ball valves intended for common fluid control applications. Valves are available in standard port sizes of 1/2" through 2" with a pressure rating of 400 PSI wog; and full port in sizes 1/4" through 4" with a pressure rating of 600 PSI wog. Marwin Valve Richards Industries 3170 Wasson Rd. Cincinnati, OH, 45209