True Union Ball Valve with Viton 1/2" (standard) - Valve PVC Sch 80 True Union Ball (regular) 1/2" w/FKM SOC and FiPT This versatile, quarter-turn shutoff valve is well suited for industrial and chemical processing applications. Available in IPS Sizes 1/2"- 4" with socket, threaded or flanged end connectors. 6" Venturied valve (4" valve with 4 x 6 adapter) available with either socket or flanged end connection. Also available with metric 20mm - 110mm or 1/2" - 4" BSP threaded end connectors.