This procurement is for 26 units of a safety relief valve (NSN 4820013285433), with delivery required within 42 days after order placement. The approved sources are limited to three specific manufacturers and part numbers. Performance location is not specified, and no budget amount is provided. The solicitation is a request for quote (RFQ) available only electronically, with no hard copies or drawings. Interested bidders must submit quotes electronically to be considered.