Overview Product Description H51, order number 116431MF-132, Three Piece Hot Water Circulator Pump, 1/4 h.p. 115V single phase built in thermal overload protection, fitting in place of Bell & Gosset 60-11. 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