Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SW701-0.5IN found under Valve Check by Flowserve Corporation. The National Stock Number assigned to this part is 4820012726909, 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 SW701-0.5IN.