The US Department of Defense, specifically the Department of the Navy, is seeking to procure three units of the 16--PRSOV VALVE, BLEED NSN 7R-1680-015878354-P8. This is a presolicitation notice, with the actual solicitation expected to follow. As the item is flight critical, only approved suppliers will be considered. To become an approved supplier, companies must submit comprehensive technical data along with their proposals. Spares and repair-related information can be found on the NAVSUP website. Interested parties should contact Svitlana Shvets for more information.