Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HSA000937 found under Valve Vacuum Regulating by Nqea Marine Safety Pty Ltd. The National Stock Number assigned to this part is 4820014085710, 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 HSA000937.