2400-20-3P | Taco Cast Iron High-Capacity 1/6 HP Hydronic Circulator PumpDescription The Taco 2400 20 3P circulator pump is a cast iron, high capacity hydronic pump designed for dependable fluid circulation in heating, cooling, and recirculation systems. This 1 6 HP unit delivers stable performance with medium to high flow and head requirements, making it suitable for both residential and commercial applications. The Taco 2400 20 3P provides efficient operation through its close coupled motor and durable mechanical sealing