Armstrong S-25 BF 174031MF-013 Maintenance Free Version

Armstrong Series S Maintenance Free Circulator PumpThis 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.FeaturesMaintenance free design which has permanently lubricated ball bearings and requires no maintenance at allRadially-split body can be left in-line while servicing pump, eliminating disconnecting of pipesOversized shaft made from stainless steelBalanced centrifugal impeller ensures maximum water delivery in the HVAC systemProven seal design made from strong and long-lasting materials for extended operating lifeThree piece modular construction and back pull-out design for easy replacement of wear componentsNote: Flanges are sold separately. Options include 116013-011, 116012-011, 116011-011, 116009-011.