Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2446 found under Valve Air Outlet by Nellcor Puritan Bennett Incorpor. The National Stock Number assigned to this part is 1680002253637, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2446.