OPEN' position

Pressure Stability: Features a balanced piston design that maintains a consistent outlet pressure regardless of inlet fluctuations

ensuring long-lasting system integrity

Cast Iron Durability: Constructed from high-strength cast iron for improved fatigue resistance compared to sintered or aluminum alternatives

allowing you to manually open the valve for filling or purging the system

Armstrong Fluid Technology 174036MF-113 Protection 323055-751 OPEN' positionThe Armstrong Fluid Technology 174036MF 113 (Model S 45 BF) is a high performance cast iron circulator pump designed for reliable fluid handling in commercial and residential hydronic systems. This 1 4 HP, 115Vac single phase pump is engineered with a non ferrous impeller and a radially split body, allowing for efficient "back pull out" servicing without disconnecting the main piping. Built for longevity, it features permanently lubricated maintenance