The NSN 4820012401027 (Valve Check) part number 0631C0029, 0631C0029-6, 493-12Y28-6, 493-12Y28-6 manufactured by Martin Marietta Technologies Inc, Parker Hannifin Corp, Teledyne Industries Inc is available in Jet Parts 360’s inventory. Owned and operated by ASAP Semiconductor, Jet Parts 360 has over six billion parts in its inventory, including NSN 4820012401027 . ASAP is devoted to streamlining the parts procurement process for our customers, making it easy for them to search through billions of parts to find exactly what they are looking for. We have dedicated account managers ready to solve procurement issues our clients face, whether it’s a need for aerospace parts, or an aircraft on ground situation. Submit a Quote for NSN 4820012401027 parts today to get started.