Check the listing for details. Lochinvar Curculation Pump. Condition: New – Open box. Listed at 500.00 USD. The Lochinvar Circulation Pump is a high-quality pump designed for use in various industrial and commercial applications. With a focus on efficiency and durability, this pump is perfect for maintaining circulation systems in heating and cooling systems, as well as in other pump-related functions. The product is known for its reliability and performance, making it a valuable addition to any business or industrial setting.