The Department of Defense, specifically the Naval Supply Systems Command (NAVSUP) Weapon Systems Support, is seeking contractors to provide repair and modification services for stack valve assemblies. This procurement is critical as the components are essential for aircraft launching and recovery systems, classified as Flight Critical, necessitating stringent quality assurance and engineering source approval by the Naval Air Systems Command. Interested contractors must submit a quote that includes either a firm-fixed price or time and materials pricing, along with detailed documentation of their manufacturing processes and compliance with various inspection and certification requirements. For further inquiries, contractors can contact Brian T. Kent at 215-697-0000 or via email at BRIAN.T.KENT.CIV@US.NAVY.MIL.