Be sure to have the manufacturer, model and size of the assembly for which you need backflow repair parts. For some models, a serial number can clarify correct variations of parts. Do not worry about having repair part numbers when ordering. Part numbers change and are often modified. Many parts are available in different combinations of kits. Rely on our customer service personnel to help with the correct repair part and part number for the parts you will need. To order backflow repair parts, first have a clear idea of what you are looking for - either basic repair kits, or individual repair parts. Usually the Basic Repair Kit is all that is needed, but if you need additional parts, have the item number and description of the needed part ready when you call. BAVCO can be reached at 800-458-3492 or info@bavco.com.