Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ASV723 found under Poppet Assembly by Knapp Monarch Co. The National Stock Number assigned to this part is 4220013412525, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ASV723.