The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Warner Robins, Georgia, is conducting market research to identify manufacturers capable of producing the C-5 Direct Linear Valve, National Stock Number (NSN) 4810001164496UC, Part Number 36190-1. This hydraulic directional control valve assembly is critical for the C-5 Aircraft, operating at a pressure of 3000 PSIG and measuring 6.88 inches in length, 3.18 inches in width, and 4.18 inches in height. The government intends to award a sole source contract to Eaton Aerospace LLC, the original equipment manufacturer, due to their exclusive knowledge and possession of the necessary technical data. Interested manufacturers must express their capabilities by emailing Trent Miller or Todd Stimus by February 2, 2026, although this announcement does not constitute a solicitation or commitment to award a contract.