Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HT2804 REF SD2 1235 found under Valve Ball by Bae Systems Surface Ships Limited. The National Stock Number assigned to this part is 4820014973589, 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 HT2804 REF SD2 1235.