CIRCOR Energy, global provider of integrated flow control solutions specializing in the manufacture of highly engineered valves, fittings, pipeline products and services has declared that KF Valves, a CIRCOR business located in Oklahoma City, has expanded its capability to manufacture stem extensions and reduce lead times to better serve buried or underground pipeline demands for customers. The stem extension offerings are available for Series P3/M3 and Welded Body valves, and are designed to customer specifications, completely plumbed and ready for installation. Special valve coatings are also available for underground installation where maximum corrosion protection is required.