The Department of Defense, through the NAVSUP Weapon Systems Support Mechanical Office, is soliciting offers for the repair and modification of regulating valves, specifically identified as item 0001AA, with a revised quantity of two units. This procurement is critical for maintaining operational capabilities in shipboard systems, where the use of defective materials could lead to severe consequences, including personnel injury or loss of life. Interested contractors must acknowledge the amendment to the solicitation, which extends the deadline for offers to December 22, 2025, at 4:30 PM local time, and can direct inquiries to Robert H. Langel at 717-605-3353 or via email at ROBERT.H.LANGEL.CIV@US.NAVY.MIL.