Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PS237572-06 found under Valve Check by Cae Corp. The National Stock Number assigned to this part is 4820015221596, 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 PS237572-06.