Thank you for taking an interest in part number D-2201 PIECE 18, that of which is a Curtiss Wright Electro Mechanical Corporation Div Steam And Air Solutions product listed with description "Piston Valve". In addition to being listed with part number D-2201 PIECE 18, this particular offering also has the NSN 4820013374497, further allowing you to ensure that you only procure the exact aerospace parts you require for your operations. If you would like to begin procurement for your desired NSN parts or simply want to know more about this listing, be sure to fill out and submit the RFQ form provided below with as much information as possible.