The government seeks a source-controlled swing check valve under NSN 4820010582588, quantity 589 EA, with approved sources 82829 20C152, 96736 55-5900, and 99321 81-2023. Delivery is to DLA Distribution Depot Hill by 542 days ADO. The solicitation is an RFQ available through the provided link; hard copies are not available. Furnished items must meet the cited drawing, and digitized drawings plus military specifications and standards may be retrieved or ordered electronically. Responsible sources may submit quotes electronically for timely consideration.