The compact Taco 006 cartridge circulator is designed for circulating hot and chilled fresh water in a wide range of open and closed loop applications. Its unique, field-serviceable cartridge contains all moving parts. Replacing the cartridge rebuilds the circulator. With no mechanical seal, the self-lubricating, maintenance free design provides quiet, efficient operation and unmatched reliability. Available in low-lead bronze, sweat or stainless steel, threaded or union connections.