Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T25145C found under Washer Emergency Valve by Allegheny Valve Co. The National Stock Number assigned to this part is 4820009620719, 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 T25145C.