UPS15-58FC Grundfos 3 Speed UPS Circulator Pump Grundfos three-speed UPS circulator pumps are used in central and district heating system while also being suitable for mixing loops in large systems. The pumps also provide reliable and maintenance-free operation. Suitable for : Commercial heating, Commercial hot water recirculation, Domestic heating Speed no : 3 Max flow : 3.9 m³/h Head max : 5.9 m Valve : pump with built-in isolating and non-return valves Pump housing : Cast iron, EN-JL1030, ASTM 30 B