Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TLR 01972 found under Disk Valve by Clemco Industries Corp. The National Stock Number assigned to this part is 4820012667848, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TLR 01972.