The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a flow control valve, identified by NSN 7R-4820-014756203-KB, with a quantity of 28 units required. This procurement is critical as the item is flight critical, necessitating government source approval prior to contract award, and only previously approved sources will be solicited. Interested parties must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and proposals must be submitted within 45 days of the notice publication. For further inquiries, contact Arianna G. Pilla at (215) 697-2198 or via email at ariana.pilla@navy.mil.