Tube, Sight Gauge Pc 3gal is a genuine Bunn OEM replacement part. Part number 35005.0005 is used for certain commercial beverage equipment made by BUNN. This part will help repair specific issues you are having with Bunnomatic model SERVERTTN commercial machines. Replace this part if BUNN or a service technician has instructed you to do so. Over time Gauges may need to be replaced because of normal wear and tear or if damage has occurred to the existing part. When replacing BUNN part #35005.0005 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 Tube, Sight Gauge Pc 3gal fits your specific needs.