The Navy intends to procure a quantity of two butterfly valves (NSN 5895 015975757, part number 396308-4-2) on a sole source basis, citing insufficient technical data for competition. The acquisition is subject to Free Trade Agreements and the World Trade Organization Government Procurement Agreement. These items require Government Source Approval prior to award, and the approval process for a new source normally cannot be completed without delaying the award. Any offeror who is not an approved source must submit all data required by the NAVSUP WSS Source Approval Brochure, available online; proposals lacking this data will not be considered. All other details can be obtained by contacting the designated Navy representative.