Overview Product Description Please call for availability! S45AB Armstrong Pump ALL BRONZE order number 174036-143, Three Piece Hot Water Circulator pump, 1/4 h.p. 115 volts, single phase, for Potable Water, built in thermal overload, fitting in place of Bell & Gosset series 2 1/2" LD3. These custom circulators feature the classic horizontal in-line design, engineered for durability and smooth operation. Designed for large flow applications. Impellers and motors are fine-tuned to meet the exact system requirements. Product Videos Custom Field Product Reviews