The Taco 0013 is specifically designed for high head / high flow applications in Large Residential and Light Commercial systems. Ideal for open loop systems and domestic water circulation. The unique replaceable cartridge contains all of the moving parts and allows for easy service instead of replacing the entire circulator. Universal flange to flange dimensions and orientation allows the 0013 to easily replace other models. Compact, low power consumption design makes it ideal for high-efficiency jobs.