SM Series metering ball valves ranging from ½” to 2″ in solid plastics are now available from Chemline Plastics. Designed for fine linear flow control of chemicals or clean fluids through 180o rotation of the handle, the valves feature a solid ball with a special V-groove cut on the outside surface. Other features include full blocking design, union ends, double stem o-ring for safety and Teflon seats. The seats have automatic compensation for seat wear and expansion and elastomer cushions to provide low stem torques. The all-plastic construction, either in PVC or PP, offers high chemical resistance at low cost. True Union socket end connections eliminate leakage problems that are common with threaded body valves.