Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HP14S9A found under Valve Regulating Fl by Emerson Electric Co. The National Stock Number assigned to this part is 4820010892028, 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 HP14S9A.