Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZC8 52 020 1 found under Valve Check by Aidc Aerospace Industrial. The National Stock Number assigned to this part is 4820013836815, 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 ZC8 52 020 1.