Properly servicing backflow prevention assemblies requires many different kinds of tools. The usual hand tools are pliers, screwdrivers, hammers, socket sets, wrenches, etc. Another class of repair tools, commonly referred to as "special" or "non-commercially available" tools, are required for some specific brands and sizes of assemblies; for example, seat removal, spring release, and compression tools. BAVCO maintains a complete inventory of both the standard hand tools and special tools to fill your needs.