Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 18930-13SR1 found under Valve Assembly Surg by Honeywell Aerospace. The National Stock Number assigned to this part is 2935007982236, and the Federal Supply Class is 2935 Engine System Cooling Components Aircraft Prime Moving. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 18930-13SR1.