Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4DP1570D-3699 1 1 2IPS found under Strainer Sediment by Walworth Co. The National Stock Number assigned to this part is 4730012317109, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4DP1570D-3699 1 1 2IPS.