Metlund D'MAND S-50T-PF Hot Water Circulation System Kit, 8-Gallon Per Minute 1/2-Inch M.I.P. For use on dedicated return lines Designed for small homes with runs under 50-Foot System includes: Taco 006 pump, activation button, 2 brass tees, 2 16-Inch flexlines To be used with conventional tank water heaters only