Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CCV55273 found under Parts Kitstop Diaphragm Valve by Parker Hannifin Ltd. The National Stock Number assigned to this part is 4820016881085, 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 CCV55273.