Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DPT-3 4IN 3-25PSI 100-160DEG F found under Valve Regulating Temperature by Watson Mcdaniel Co. The National Stock Number assigned to this part is 4820014560405, 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 DPT-3 4IN 3-25PSI 100-160DEG F.