The Department of Homeland Security, specifically the U.S. Coast Guard's Aviation Logistics Center, is seeking quotations for the procurement of five modulation valves, identified by National Stock Number 1660-01-161-8379 and part numbers 70309-23900-103, 321025, and others. This procurement is part of a combined synopsis/solicitation process aimed at acquiring new approved commercial items, with a firm-fixed price purchase order anticipated to be awarded on a competitive basis. The valves are critical components for aircraft systems, ensuring proper modulation of air conditioning, heating, and pressurizing equipment. Interested vendors must submit their quotations by July 8, 2025, at 2:00 PM EDT, and can direct inquiries to Michelle Monds at Michelle.R.Monds@uscg.mil or the MRR Procurement Mailbox at mrr-procurement@uscg.mil, referencing solicitation number 70Z03825QJ0000348.