Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 150-4340PC20 found under Seat Valve by Hardie Tynes Co Inc. The National Stock Number assigned to this part is 4810001688719, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 150-4340PC20.