Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N-HPC-11100 ITEM 13 found under Seat Valve by Metrex Valve Corp. The National Stock Number assigned to this part is 4820011357587, 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 N-HPC-11100 ITEM 13.