Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C4822PC20 found under Diaphragm Valve Flat by Singer Valve Inc. The National Stock Number assigned to this part is 4820008555121, 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 C4822PC20.