Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 01212100 found under Valve Flow Control by D And D Instruments Inc. The National Stock Number assigned to this part is 4820014225633, 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 01212100.