Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 706518535 found under Valve Check by Lips Proptech B V. The National Stock Number assigned to this part is 4820123392394, 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 706518535.