Armstrong 116531-132, Model S-69-1, Cast Iron In-Line Pump With 3" NPT Flanges, Series S, 1 HP, 115/230 Volts, 1 Phase, 160 GPM Max, 34 ft Max Head, Sleeve Bearing Design

This Armstrong In-Line circulator is suitable for hydronic heating and cooling, multi-stage zoning and general industrial service applications. It is built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction. This circulator has been used by HVAC professionals for decades because it is cost-effective, durable and easy to maintain.