This procurement is for two units of a specific regulating valve (NSN 4810014728933), with delivery required within 5 days after order issuance to the Southwest Regional Maintenance Center. The approved sources for this item are limited to three specific manufacturers and part numbers. The solicitation is a Request for Quote (RFQ) available only online, with no hard copies, specifications, or drawings provided. Quotes must be submitted electronically, and all responsible sources are encouraged to participate. No budget amount or performance location beyond the delivery destination is specified.