Armstrong 116435MF-132, Model H-52, Cast Iron In-Line Circulation Pump With 1-1/4" NPT Flanges, Series H, 1/3 HP, 115 Volts, 1 Phase, 52 GPM Max, 26 ft Max Head, Maintenance Free Design

Armstrong Series H Circulator PumpThis Armstrong In-Line Circulation Pump 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.FeaturesThree piece modular construction and back pull-out design for easy replacement of wear components

• Maintenance free design which has permanently lubricated ball bearings and requires no maintenance at all
• Radially-split body can be left in-line while servicing pump, eliminating disconnecting of pipes
• Oversized shaft made from special alloy steel
• Balanced centrifugal impeller ensures maximum water delivery in the HVAC system
• Proven seal design made from strong and long-lasting materials for extended operating life