Presolicitation DEPT OF DEFENSE DEPT OF THE NAVY is seeking a VALVE,REGULATING FL. This item is typically used for regulating the flow of fluids in various systems. The procurement is for NSN 7R-4820-015076671-RQ, REF NR V4000-109-3-1, with a quantity of 1 EA. Delivery is FOB ORIGIN. The Government does not own the data or rights to the data needed to purchase/contract repair of this part from additional sources. The item requires Government source approval due to its flight critical nature and inadequate technical data for acquisition via full and open competition. Only previously approved sources have been solicited. Interested parties must submit the necessary information for source approval. Failure to provide all required data will result in disqualification.