Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 159-388 found under Valve Check by Ditch Witch Australia Pty Ltd. The National Stock Number assigned to this part is 4820015517072, 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 159-388.