The Taco 0010 is designed for a wide range of large residential and light commercial water circulating applications. Typical uses include hydronic heating, radiant in-floor/panel heating and primary-secondary loops. The unique replaceable cartridge contains all of the moving parts and allows for easy service, instead of replacing the entire circulator. Compact, direct-drive, low power consumption design is ideal for high-efficiency jobs. Self lubricating - No mechanical seal - Universal flange dimensions