Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TBR30 CAT CUT ITEM NO 16 found under Piston Valve by Tobul Accumulator Incorporated. The National Stock Number assigned to this part is 4820014529951, 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 TBR30 CAT CUT ITEM NO 16.