The NSN 4820012517695 (Seat Valve) part number 055920, 055920 ITEM 20, 105013 P144, 231050131440317 manufactured by William Powell Company The 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 4820012517695 . 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 4820012517695 parts today to get started.