Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J55053MLPCV35SH1 found under Valve Check by Mechanical Products Co. The National Stock Number assigned to this part is 4820005954380, 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 J55053MLPCV35SH1.