Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number B6423-4 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number B6423-4 It is listed as Valve Assembly Liquid Oxygen. component manufactured by Container Service Inc, specifically under CAGE Code 14727. It is also accompanied by the NSN 4820010540565 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 4820 Valves Nonpowered.