Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 39193-2161-1 found under Diaphragm Actuator Valve Special by A B A Industries Inc. The National Stock Number assigned to this part is 4820013103527, 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 39193-2161-1.