Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PS135300 found under Disk Valve by Alliedsignal Inc. The National Stock Number assigned to this part is 1660005075337, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PS135300.