Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number REG-FILTER-4-KIT5 found under Repair Kitvalve by Swagelok Ltd. The National Stock Number assigned to this part is 4810016846110, 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 REG-FILTER-4-KIT5.