The Department of the Navy Naval Supply Systems Command awarded a $520,464 purchase order to Mellinger Engineering, Incorporated of Sonoma, California. The firm fixed price contract is to provide 6-inch ball valves in accordance with solicitation VALVE, BALL, which sought a contractor to supply the valves with traceability and certification documentation for all materials per the drawings and specifications. Performance will take place at the contractor's facility and last from May 2021 through July 2022. The solicitation had no set aside and involved Navy requirements for valves manufactured from materials like alloy steel and nickel alloy, to be used as part of the Navy's supply systems.