Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VD-210-402N found under Valve Regulating Temperature by Rostra Vernatherm Llc. The National Stock Number assigned to this part is 4820013842625, 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 VD-210-402N.