Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 180520-PLS3850 found under Positioner Valve by Schenck Pegasus Corporation. The National Stock Number assigned to this part is 4820012730446, 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 180520-PLS3850.