TUBOFLEX 3/8FF L33 is a genuine Astoria OEM replacement part. Part number 4630403 is used for certain commercial espresso equipment made by Astoria. This part will help repair specific issues you are having with Astoria commercial espresso machines. Replace this part if Astoria or a service technician has instructed you to do so. Over time TUBOFLEX 3/8FF L33 may need to be replaced because of normal wear and tear or if damage has occurred to the existing part. When replacing Astoria part #4630403 it is suggested that no power or water is connected to the machine and you are working in clean and non hazardous environment. Please be sure TUBOFLEX 3/8FF L33 fits your specific needs.