DLA Troop Support Philadelphia anticipates issuing a request for proposal for NSN 4420-01281-2470. The nomenclature for this is NSN is Core Assembly, Fluid. The approved source for this NSN is Aqua-Ch... DLA Troop Support Philadelphia anticipates issuing a request for proposal for NSN 4420-01281-2470. The nomenclature for this is NSN is Core Assembly, Fluid. The approved source for this NSN is Aqua-Chem (CAGE 0EXU3), P/N 534-09630-000. This requirement is for a large buy, an acquisition that is over the standard acquisition threshold (SAT) of $350k. This requirement will be processed in accordance with FAR Part 15. The estimated issuance date of the RFP is 07/24/2026.