Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20194-12 found under Valve Regulating Fluid Pressure by G And G Hydraulics Corporation. The National Stock Number assigned to this part is 4820012205664, 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 20194-12.