Overview Product Description H52, order number 116435mf-132, Three Piece Hot Water Circulator Pump, 1/3 h.p. 115V single phase built in thermal overload protection, fitting in place of Bell & Gosset 60-12. 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