The Grundfos UPS26-99FC (52722512) is a robust and versatile circulator pump designed for hydronic heating and cooling systems. Operating at 115V with a 1/6 horsepower motor, this pump offers three-speed settings to accommodate various system requirements and optimize performance. The cast iron construction ensures durability and longevity, making it suitable for residential and light commercial applications. The pump includes a built-in check valve, preventing backflow and enhancing system efficiency. The flanged connections facilitate easy installation and maintenance.