The procurement is for 45 check valves (NSN 4820012699542) under a source-controlled drawing item, with approved source 09990 5-1385-1. Delivery is required to DLA Distribution Puget Sound within 164 days after date of order. The RFQ will be available electronically, and hard copies are not provided; quoted items must meet the drawing cited in the solicitation. Digitized drawings and military specifications/standards may be retrieved or ordered electronically, and all responsible sources may submit an electronic quote for timely consideration.