The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of valve assemblies, classified under the NAICS code 332919 for Other Metal Valve and Pipe Fitting Manufacturing. This opportunity involves the supply of new manufacture spare parts, with evaluation criteria focusing on lead time, price, past performance, and capacity, requiring bidders to submit firm fixed prices for each Contract Line Item Number (CLIN). Interested vendors must ensure they are approved to manufacture the specified materials, as a Source Approval Request (SAR) is necessary for those not already authorized, and proposals must be submitted via email by the specified closing date, with a minimum validity of 120 days post-submission. For further inquiries, potential offerors can contact Helen Carmelo at Helen.i.carmelo.civ@us.navy.mil or by telephone at 215-697-1138.