The High Velocity Series Taco 009 Cartridge Circulator is designed for a
wide range of residential and light commercial, higher-head/lower-flow
water circulating applications. Available in cast iron or stainless
steel construction. Stainless Steel can be used in higher-head
/lower-flow heat recovery, open-loop solar heating and light
commercial/domestic water recirculation systems. Unique, replaceable
cartridge contains all of the moving parts so you can service it easily
instead of replacing the entire unit.