Grundfos UPS50-40/4 3x208-230V Circulator Pump. The UPS Series Circulating Pumps are designed to be extremely efficient, and durable. The UPS Series Pumps motors are engineered for use on both full and part-capacity systems. The Grundfos UPS50-40/4 3x208-230V Circulator Pump is manufactured to cover a broad range of both commercial and residential circulation applications. These circulation applications include; circulating liquids in heating and air-conditioning systems, general water supply, boiler/hydronic heating, and chilled water systems. The Grundfos UPS50-40/4 3x208-230V Circulator Pump also features an easy maintenance design that allows a single person to service the pump with ease, saving your company time and money. Other important specifications include; Multi-Stage/Phase Motor, Cast Iron Body, Integral Check Valve, Flanged Connection, and Signature Dark Red Color.