Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 144791 found under Diaphragm Valve Flat by E P Barrus Limited. The National Stock Number assigned to this part is 4820015093459, 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 144791.