Tacos 007-F5-7IFC Model is a cartridge style, maintenance free, wet-rotor, in-line, single stage circulator pump. Its rugged cast iron construction makes the circulating pump a versatile and reliable unit in your HVAC system. Since the cartridge contains all of the interacting parts, circulator and IFC maintenance is made easy and you dont have to replace the entire unit. Its quiet, effective operation, unmatched reliability, unique design and functionality makes the Taco 007-F5-7IFC cartridge circulator pump among the most popular hydronic circulator pumps available in the market. The Taco 007-F5-7IFC is engineered to simplify piping, reduce installation costs and optimize system performance when zoning with Taco 00 circulators. Its main function is to protect against reverse and gravity flow. A low pressure drop caused by the spring-loaded IFC increases flow performance vs. traditional in-line flow checks. Applications include: hydronic heating/cooling, hydro-air fan coils, radiant heating, and indirect water heaters.