All fluids are poured into the top of the chamber for filling, flushing and adding anti-freeze. The top can be left open until the system is completely purged. Dip tube improves system performance by preventing air entry into closed loop system. Air elimination chamber removes air from the system as it is circulated through the chamber canister. Ball valve allows each pump to be removed for service without the risk of fluid loss to the system.
Pumps circulate fluid throughout the earth loop system.
Built in check valve holds water in the pump volutes after the initial filling. This feature protects the pump by keeping water on the bearings even if the chamber runs dry.