The DLA Aviation Philadelphia is seeking contractors to manufacture a specific regulating valve (NSN 7RH 4810 014691460 QE, P/N 814201-7). The government lacks the necessary data to manufacture this item itself and intends to negotiate with only one or a limited number of approved sources. Proposals may be considered if received within 16 days of the notice's publication. The location for performance is Philadelphia. Unapproved sources must submit a Source Approval Request package with their proposal, as award will not be delayed pending a new source's approval.