Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B00-057793-00-00 found under Valve Regulating Fl by Clayton Hill Greenhouse Co. The National Stock Number assigned to this part is 4810012941798, 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 B00-057793-00-00.